Beautiful hostas are the sum of a big organic hole in the ground and lots of watering. Hostas planted in the fall will look a year older than the ones you buy next spring, explains Bob Solberg, a leading hosta hybridizer at Green Hill Farm. What About Winter? Check the soil weekly (more often in the summertime), and water when the top inch is dry. Reduce the risk by growing hostas in full to part shade. So, I realized how Hostas need the sun, but didn’t realize that the sun makes them put down more roots and thus, grow faster and larger. The majority of hosta plants bloom in late spring to early summer. Hostas will have to be well-watered, especially during dry periods. A balcony garden with morning sun and afternoon shade is best. There are 8000+ hosta cultivars so there are many more sun-tolerant hostas than I’m listing here. Give them plenty of water (soak older root bound plants) Put the hose on the root ball area of the plant and let it run slowly for 5 or 10 minutes. If the leaves are wet at night, they might develop mildew. Not necessarily. With so many different varieties now to choose from in all shapes, sizes and colours collecting has become a popular pastime. If leaf margins begin to brown, it may be time to move that hosta to a cooler spot in the garden. Learn more about growing and caring for hostas. Hello Judi, This post is very useful for gardeners. Attend garden seminars and classes and as many as possible to pick up all the information your mind can soak up! Deep watering encourages the roots to grow deeper into the ground where they can still find moisture during short periods of dryness. ... Water the plant often enough at a new place but do not create a swamp around it. We lost another 100+-year-old white pine in a winter storm in March this year, that was in the south east area of a large Hosta Bed, and that has opened up the shade cover and I can see that the Hostas were looking real good there this summer in spite of losing the tree. Hostas need average water, but most benefit from watering during dry spells. (You are never too old to learn)! Q. I would like to find out if there is a hosta plant that can grow in full sun in the Chicago area. (I use a pail of water and an 8 oz. Take them as suggestions and be willing to move your plants around until you find their sweet spots. They’ll do well in full shade or where they get some morning sun, which is less harsh. Because of the high transpiration rate of hosta leaves, it is essential that we provide the additional water that is essential for growth. Too dark a location will lead to slower growth rates. In summer, watering outdoor potted plants is necessary daily (and even twice a day) for most species, especially when temperatures reach over 85 degrees F. (29 C.). To keep your hostas looking lush and full, make sure they get about an inch of water per week. There's a vast range of cultivars to choose from, with leaves in all shades of green, as well as dusky blues and acid yellows, sometimes variegated or flashed with cream or gold, ruffled, smooth or distinctively ribbed. It is definitely a chance that how much water do hostas need. And be sure to read the growing tips (below): they are key to making this work. However, many hostas will grow fine in full sun if given adequate moisture to keep them from drying out. Hostas are generally long-lived perennials that are notoriously easy to care for; in most cases watering is the most important, regularly-required aspect of hosta care. Guardian Angel looking good in the fall months with plenty of water. Working an organic matter amendment like well-rotted compost or aged manure into the soil before planting hostas improves soil drainage, water retention and fertility. I will transplant them next spring into the soil along with some compost. By establishing a weekly watering schedule, plants can develop a more robust root system that is better able to access water deep in the soil. Just how much water do Hostas need to thrive? Happy Gardening, Judi. Hostas can tolerate periods of dryness, if they are otherwise healthy. It’s also vitally important to understand the growing conditions that hostas for sun require. Hostas are usually considered shade loving plants, but they do best in areas where they receive morning sun and are shaded during the hot afternoon. How Often to Water Potted Plants If you are consistently checking the pots, you will know when to water the plant. Source(s): Had much sucess with replaning hosta in N.Y. state. Find quick tips and methods for the care and watering of your Hosta and avoid killing them. Hostas that are cultivated in areas with more than dappled sunlight tend to have greater water requirements than plants grown in cooler or shadier sites. Hostas exposed to more sun will require more water. The minute a hosta is enduring direct sun or brighter sun, the leaves, especially the larger-leaved varieties—are going to demand a steady water supply. As a general rule, hostas benefit from an inch of water weekly through rainfall and supplemental irrigation. Plants growing in more sun will be more compact and will produce more flowers. Hostas need even moisture, good soil, and root space. Hostas are shade-loving plants. In general, blue hostas have richer color in shady spots, while gold ones need more sun to show their brightest hues. Planting in Sun. For example, green-leaved varieties of hostas are the most tolerant of shade, while variegated hostas are more likely to burn in full sun. Hostas, such as 'Sun Power, that can take more light need some extra help. Thanks for this informative post. Fragrant hybrids (which have H. plantaginea in them) are generally more sun tolerant. I finally moved it to that same southeast location on the side of the house and now it is 5 feet wide and gorgeous yellow/gold. When you plant hostas in sun, it’s important to provide ample water. Hostas need even moisture, good soil, and root space. A 2- to 4-inch layer of organic mulch like shredded leaves, grass clippings or wood chips spread around -- though not directly in contact with the plant -- conserves soil moisture, regulates soil temperature and adds nutrients to the soil as the material breaks down. Hostas are great solutions for shady spaces in the garden. They are one of the best plants for damp shade, especially on heavier, more moisture-retentive soils.There are a wide range of different varieties of hosta plants to choose from, a few even thriving in very different conditions – even in full sun. It didn’t color up at all. Those with blue-green foliage fade to yellow-green if they get too much sun. Thank you, Mike. Even when rainfall amounts seem sufficient, hostas grown in shaded, protected areas may be sheltered from the rain by building overhangs or larger vegetation that only allow the hostas to receive part of the total rainfall amount. “Hostas for sun” simply implies that the shade loving perennial foliage plants referred to as hostas, are able to withstand a few hours of direct sun each day. They say from 1.5 to 2″ per week is what is needed to keep them growing well. Like many perennial plants, watering a hosta deeply will be imperative – on average, they require about an inch (2.5 cm.) However, fall is also an option, especially if you want your plants to look more established come spring. The majority of these undemanding plants grow in average soils and are hardy in zones 3 to 9. If they are in soil that drains most of the water off keep them moist until you see they are growing well. wide The flowers emerge during summer, and range from mauve through to white in colour. Angela Ryczkowski is a professional writer who has served as a greenhouse manager and certified wildland firefighter. Hostas do produce flowers, but are usually grown for their foliage. It is a myth that Hostas can withstand drought. Providing extra water above this minimum can help achieve maximum growth. However, the plant suffers underground and further development stops. Serious growers will see that their hostas get 1/2" of water three times a week. The hostas on our property do receive a ton of late morning sun … Epsom salts! Hostas have big leaves that allow a large amount of transpiration and water loss. Happy Gardening! When I split my hostas, I just chop them up, trying to keep adequate root structure in each clump. Not, the 1 inch per week that we always heard. Take them as suggestions and be willing to move your plants around until you find their sweet spots. ... some of the miniatures and smaller varieties more often, even every day. Most will tolerate … We live in the Midwest and I'm wondering how to keep hostas from starting to turn brown in August. Soil is one of the main obstacles, at least with me and heavy clay. Also, a plus, the sun will help the golden Hostas like Sum & Substance and August Moon, Midas Touch, Key West, Sun Power, and Vanilla Cream and many other golden Hostas, retain their color throughout the season. Those in containers or in full sun will obviously have higher water requirements. I am surprised and happy. Hostas need to be well-watered, which means at least an inch of water should be given to the plant each week. How often to water may vary from one place and another depending on several factors such as the local weather, how big the pot is, whether the plant is indoors or outdoors, the type of geranium, how big the plant is, the overall level of humidity, etc. It is especially important to give hostas consistent moisture during the first growing season, while they are taking root. (Avoid alternating extremes of wet and dry.) Hostas grow best in part to full shade. Hostas are shade plants, right? Eventually, the leaves will begin to turn yellow and the plant will die. We here, in West Central Wisconsin, have had an overabundance of rain this spring and summer and so all was well until about a week ago when I could start to see burning on the leaves as the rain clouds went around us this August. Division: It often takes four to five years for hostas to mature, and division is usually not necessary before this time. The Hostas plant can be an excellent plant for many gardens. Additional possible symptoms of drought stress in hostas include decreased leaf size and fewer leaves, although these symptoms may also indicate a nutrient deficiency. Your shade garden should be watered with a good soaking twice a week and maybe more if you have more than optimum sun exposure. There are always tidbits to pick up along the way, too, from neighbors and friends that love to dabble in the growing of plants. When a Hosta becomes dry in full growth, at first sight, nothing is wrong. Choose an area in your garden that receives partial sun. Plant in the spring and cut back in the fall after a few frosts. The late frost here, zone 4, West Central Wisconsin, was not good for some of my Hostas but most seem to have come out of and grown quite large. Most hostas like shady conditions, but newer sun tolerant hostas can withstand morning or, with some varieties, all day sun. Severe or prolonged lack of water may cause hostas to … The key is the reasoning as we have been told for years, and years and that is to water, water, water the plants! When growing hostas in pots, ensure there are plenty of … Summer Hosta Care – How To Keep Hostas Beautiful All Season Long # Remove Spent Bloom Spikes. For example, green-leaved varieties of hostas are the most tolerant of shade, while variegated hostas are more likely to burn in full sun. Hostas are hardy perennials that are especially perfect for a garden that doesn’t get too much sun. Even though I have been growing Hostas for 30+ years, it was so interesting and I gained even more knowledge! Hostas, various species and hybrids within the genus of the same name, are prized as ornamental plants for their attractive foliage (available in numerous sizes, colors and shapes), flowers that appear on tall stalks and an ability to thrive in shady sites. There are many methods of watering your hostas. For this reason they are often planted by, but never in, a pond. I have been so busy this summer, there haven’t been any posts, but hopefully that will change soon. Hello, my name is Judi Ruedy and I have been a Master Gardener Volunteer for about 20 years and have been involved in a local garden club since 1975. The Hostas that usually had burnt leaves by Mid July, were still lovely this year up to and through early August. The best time to water hostas is early in the morning. There is always something to be learned from attending programs on gardening and plantings of any kind. And be sure to read the growing tips (below): they are key to making this work. As hostas thrive in a water-retentive soil they’re ideal for planting in a bog garden but they should not be treated as an aquatic marginal. So much information out there on the web doesn’t apply to our colder growing climate, so I thought I would share my own findings here on this site. Provide good, organically enriched soil, … I am not, however watering the mature ones this time of the year, as it is mid-August, and they will be fine the rest of the growing season and still look good. Watering hostas in the morning will help keep them hydrated during hotter parts of the day during the summer. Many people rate hostas by leaf color in terms of the amount of sunlight they can manage. Planting Tips for Growing Hostas in Sun. How Much Water Do Hostas Need? So water profusely and keep them heavily mulched. Too little water may cause leaves to droop or even cause the leaf tips to burn. They started the business 4 years ago. A hosta located in a suitable spot will often take little care or upkeep. Once hosta plants are firmly established, they can often survive on rainfall, except during times of … Water: Water the hosta plant well, and keep the potting soil consistently moist. Plant in the spring and cut back in the fall after a few frosts. Water them really well right after transplanting, then again in a day or two... best time to transplant is before the leaves get too big. Good to have you on board! Hostas that grow in sun include variegated varieties, but there are several others (especially those with thick leaves) that are suited to brighter locations. Most large commercial growers have all their Hostas growing in the sun. Growing in pots is an excellent way to display your prized hostas, from miniatures to giants all hostas can be grown in … This is definitely my most important tip to growing large, beautiful hostas! They are doing really well in the pots and will stay in them over this winter. In July, the sun shines too brightly and dries the earth quickly, so it’s best not to split hosta at this time. Mix 1 ounce of Epsom salt into one gallon of water and water plants liberally. Once watered well, these drooped leaves will perk up. A few years ago I had a Sum & Substance planted in a northern exposure on the side of our gazebo and it did nothing! A single deep soak every week is always better than multiple, light waterings. Avoid planting locations that receive hot afternoon sun. Hostas with leaves that have a white underside, like green ‘Maekawa’ or blue ‘Azure Snow’, are more striking when you can look up … Build up a dirt bowl around the base of the hosta, and fill the bowl with water as often as possible over one to two days. In addition to a correct location, good soil and adapted fertilizer, Hosta’s need sufficient water. Also maintain a thick mulch over soil on sun tolerant hostas to help conserve soil moisture. It has been in the 90's for the past couple of weeks. There are also sun tolerant hostas available whose foliage will make the perfect setting for other plants. However, hostas that are never stressed from lack of water will grow bigger, faster and will hold up and look nice longer into the season. Reliable and easy to grow, hostas are long-lived—and may even outlive the gardener! Apply by watering can, drip irrigation, a soaker hose or natural rainfall. Hostas grown under shallow-rooted trees may also require more irrigation. Hostas are very easy to grow, and once they are established, they are incredibly hardy and known to live for decades, often outliving the person who plants them. The secret ingredient? But shade might not be their ideal growing condition. How often do you water your hostas? How often to water may vary from one place and another depending on several factors such as the local weather, how big the pot is, whether the plant is indoors or outdoors, the type of geranium, how big the plant is, the overall level of humidity, etc. More sun means more heat so be sure to water regularly and apply a couple of inches of mulch to conserve moisture. Key Takeaways: Water hostas as frequently as required to keep the soil consistently moist. I just found your site and as a hosta lover I know it will be interesting and helpful for my favorite summer hobby.i am in zone 3b-4 ,in Northern MN but My hostas do well for the most part. Hostas are hardy perennials that are especially perfect for a garden that doesn’t get too much sun. Some hostas need a period of full sun to look and perform their best. The reasoning is that the root system develops better because of the roots always going out and looking for water. Hostas benefit more from deep, infrequent irrigation than frequent, shallow watering. Yellow (H. 'Sun Power') or light green (H. 'Sum and Substance') will thrive in high light situations AS LONG AS THEY ARE GIVEN ADEQUATE WATER. I water new plants before the sun is up and after it goes down. When you plant hostas in sun, it’s important to provide ample water. Too much sunlight causes leaves to scorch and bleach out. They say from 1.5 to 2″ per week is what is needed to keep them growing well. The fleshy, plump leaves store water, making sedums tolerant of drought and dry, harsh conditions. Hostas are tough, versatile, and adaptable. The sun is at its maximum height in the sky and often beds that were bathed in shade in early May are now in full sun. You are Welcome. of water each week. As you plan which hostas for sun fit your landscape needs, visit local nurseries in August and check out the hostas. Hostas are a beloved go-to shade plant, but their care is often taken for granted. Yes, in the sun. It’s also vitally important to understand the growing conditions that hostas for sun require. Divide large hostas less often than medium ones. Hello, my name is Judi Ruedy and I have been a Master Gardener Volunteer for about 20 years and have been involved in a local garden club since 1975. Hostas can be split without root stimulation... in fact, you can actually damage/burn the roots with too much. Not, the 1 inch per week that we always heard. Hostas like even moisture, too, which is another reason sunny spots don’t work — … Once hosta plants are firmly established, they can often survive on rainfall, except during times of … Herbaceous perennials, hostas become dormant in winter, then grow from new shoots in spring. Signs that your hostas are getting too much sun (or not enough water) are brown tips at the outside edges of the leaves and a dull color of faded spots in the leaves. Signs that your hostas are getting too much sun (or not enough water) are brown tips at the outside edges of the leaves and a dull color of faded spots in the leaves. Drown the hostas. So much information out there on the web doesn’t apply to our colder growing climate, so I thought I would share my own findings here on this site. Check the soil weekly (more often in the summertime), and water when the top inch is dry. • Hostas are shade-tolerant, but as with many plants, different varieties require different amounts of sun and shade to do well. A minimum of 1 inch per week of rainfall or supplemental water needs to be provided during the whole growing season. Water hostas under the foliage at their bases to prevent the leaves from getting burned by the sun. However, many hostas will grow fine in full sun if given adequate moisture to keep them from drying out. Hostas can withstand heavy watering, but they have limits. Zone: To Zone 8. Learn more about growing and caring for hostas. The minute a hosta is enduring direct sun or brighter sun, the leaves, especially the larger-leaved varieties—are going to demand a steady water … The frequency depends upon the species. DAR76. (It is bigger!). Watering newly transplanted hostas? You have explored all the points for making beautiful garden and their needs. Hostas planted in full sunlight need more frequent watering than those grown in the shade. I created this website specifically for zone 4 Northern gardeners that need help finding perennials specific to their growing area. Full Sun, Partial Sun : Season of Interest: Spring (Mid,Late) Summer (Early,Mid,Late) Fall: Height: 2' – 3' (60cm – 90cm) Spread: 4' – 5' (120cm – 150cm) Spacing: 60" (150cm) Water Needs: Average : Maintenance: Low : Soil Type: Clay, Loam : Soil pH: Acid, Neutral : Soil Drainage: Moist but Well-Drained : Characteristics: Cut Flowers, Fragrant, Plant of Merit, Showy : Attracts I created this website specifically for zone 4 Northern gardeners that need help finding perennials specific to their growing area. Hostas tolerant of sun These hostas can be planted in full sun because they are less prone to leaf scorch. © Copyright 2020 Hearst Communications, Inc. Plan to water sun tolerant hostas more than their cousins growing in cooler, shady conditions. As a general rule, hostas benefit from an inch of water weekly through rainfall and supplemental irrigation. Blooms Lavender in spring Light 2 to 4 hours of shade Size 22 in. The leaf edges will turn brown in sun or extreme heat. Hi Faye, Glad to have you watching my site. A scorching or browning of leaf tips or margins generally indicates inadequate water. Please log in again. All of their thousands of Hostas are grown in the sun! Q. I would like to find out if there is a hosta plant that can grow in full sun in the Chicago area. How often and at what time of day? When dividing hostas in spring, wait for the "eyes" to pop out from the soil so you can distinguish how many there are and where to make a cut. Water applied at a very slow rate to the soil, not the leaves, for several minutes encourages deep root growth and limits water wasted through runoff. Hostas are really enjoyable and addictive to grow. All plants need water, and sedums are no exception — the trick is to water enough to keep the plants happy without watering too much. The Southern Living Garden Book explains, "They are generally shade lovers, though some will tolerate dappled or morning sun if well-watered. Established hostas should receive waterings every three or four days, totaling 1 to 1 1/2 inches of water per week. Morning is the best time for watering so that the hostas have all day to absorb the moisture. They'll still appreciate a moisture-retentive soil, so dig in a good bucketful of well-rotted compost or manure per sq m (yd) before planting to help them thrive. If your roses appear droopy or are wilting, water them right away, since this is a sign they’re drying out. Do not let hosta flower dry out, but do not let it sit in soggy water. Sometimes referred to as plantain lilies, hostas are reliable plants for both shade and partial sun situations. Also maintain a thick mulch over soil on sun tolerant hostas to help conserve soil moisture. Yes, in the sun. It is especially important to give hostas consistent moisture during the first growing season, while they are taking root. Hostas will wilt and turn brown if their soil gets too dry, so make sure to water them frequently to keep the soil moist. Copyright FavoritePerennials.com and Judi Ruedy 2010-2019. Hostas thrive in fertile, moist soil. Set the container outside in a part-sun or shady spot. How to grow hostas. My love for Hostas started a long time ago before I knew anything about growing anything, and Hostas were not in vogue. Spring, when new shoots appear, is a good time to plant hostas or divide and transplant established clumps. Yellow and gold hostas will actually benefit from 2 to 3 hours of morning sun … Sedum plants, also called stonecrop, require very little water to survive. Usually, they can fend for themselves, but watering during periods of dryness will certainly help our hostas look and grow their best. More heat-tolerant varieties of hostas are available. They will live for years when planted in the right spot, and gradually spread into larger clumps. Some people never water, just let them survive with rain water while others say daily. Factors that affect sun-tolerance include genetics, amount of water, how far north and influence of latitude, filtered shade/indirect sunlight vs. full sun, morning sun with afternoon shade vs. morning shade with afternoon sun, etc. The login page will open in a new tab. Plus, if you are fighting tree roots then the tree gets all of the moisture first. Grown primarily as an ornamental plant for their beautiful foliage, hostas also produce beautiful flower clusters that range in … Here are 11 of the most common mistakes gardeners make. As you plan which hostas for sun fit your landscape needs, visit local nurseries in August and check out the hostas. Generally, hostas prefer to be planted out of direct sunlight. Besides the wonderful foliage hostas produce, many display fragrant flowers from early summer to fall, depending on the cultivar. If drought is threatening the area where you live, you may need to water your hostas more, especially if you are trying to encourage new growth. Both of these are essential nutrients for plants to grow bigger and healthier, therefore using Epsom salts on … Perhaps the best piece of advice, is the universal method of relying on your sense of touch. While some hostas can take deep shade, most prefer dappled shade or a bit of morning sun. As a guideline, if the soil around the hosta feels dry to the touch an inch below the soil surface, irrigation is generally warranted. They flourished and spread. Watering your hostas is crucial to their survival and success. Hostas have big leaves that allow a large amount of transpiration and water loss. All of their thousands of Hostas are grown in the sun! Although the process is beautiful, what you do immediately after their bloom period makes a huge difference in the plant’s vitality and appearance the remainder of the growing season. Water requirements are greater during hot, dry weather than during cool, wet periods. Of course, this all depends on how much water they get in a season, and many years you need to supplement that. One thing with gardening, is that everyone has a different “site” with many things to get through when planting and enjoying perennials. Start planting hostas by digging a hole and adding organic matter. Creative Ideas For Perennial Bed Borders Using Hostas. Reliable and easy to grow, hostas are long-lived—and may even outlive the gardener! Plant hostas in evenly moist, humus-rich soil in light to full shade. tall by 36 in. Epsom salts is hydrated magnesium sulfate and it consists of 10% magnesium and 13% sulfur. Judi. Plan to water sun tolerant hostas more than their cousins growing in cooler, shady conditions. Some growers recommend a soil that is fast draining. Hostas are Thirsty Plants. Hostas can tolerate direct light but they hate heat! She holds a Bachelor of Arts in urban and regional studies. All Rights Reserved. Prevent Scorch and Brown Leaves on Hostas. Hostas are usually termed \"shade-tolerant\" plants, meaning they will grow in shade or partial shade. Hostas are quickly becoming one of the most popular perennial plants grown in our landscapes. These shade-loving plants are primarily grown for their beautiful foliage. 0 0. Water. Marlene Rosenberg and husband Jonathan Goodrich along with their son Seth, own and operate Uniquely Hostas in Elroy, WI. There are 8000+ hosta cultivars so there are many more sun-tolerant hostas than I’m listing here. When growing hostas in pots, use a standard potting soil (never garden soil) and water the plant in. In addition, hostas that are growing near other plants or in the sun may require more water. However I do have some little Munchkin Fire that I purchased this spring, that I water as they were so little, I put them in 4″ pots and sunk them in the ground and now they are 3 times as large as when they came in the mail. The more sunlight, the more water they need. Hostas make an amazing addition to any home garden, but this one weird little trick will show you how to grow bigger hostas with just one ingredient! Additional Watering or Moisture Considerations, University of Minnesota Extension: Hostas, Ohio State University Extension: Growing Hostas, University of Minnesota Extension: Diagnosing Hosta Problems, University of Georgia College of Agricultural and Environmental Sciences: Growing Hostas, University of California Cooperative Extension: Growing Hostas, North Dakota State University Extension Service: Questions on Hosta. Try to water your plants in the morning so the leaves have time to dry off during the day. Water your hosta regularly and deeply year-round, maintaining evenly moist soil at all times and never allowing the ground soil to dry out below the surface between waterings. I've been watering every 3 days but some of my hostas are getting that yellowing of the leaves. After logging in you can close it and return to this page. So water profusely and keep them heavily mulched. ... Do not separate hostas too often; do it once every 3-5 years, depending on the variety. Hostas thrive in sites where filtered or dappled shade is available for much of the day, but they can survive in deep shade (less than 4 hours of sun a day). Water. Consider hostas that have a distinctive cascading form like ‘Green Fountain’, ‘Niagara Falls’, ‘Jade Cascade’, or ‘Permanent Wave’ to draw the eye down a hill or to a water feature. But there is no doubt that watering in full sun is not water efficient – as much of it will evaporate before entering the soil. This happened because of all the extra rain we have had here in Wisconsin this summer and there was no extra watering to be done during the summer months. A slow, deep soaking of around an inch of water per week through the growing season is perfect. The key is the reasoning as we have been told for years, and years and that is to water, water, water the plants! Recently I attended a workshop that an area Garden Club sponsored (Tilling Thyme, Sparta, WI) with a wonderful garden tour and in addition had a local Hosta Nursery, Uniquely Hostas, in Elroy, WI, presenting a program on growing Hostas. My love for Hostas started a long time ago before I knew anything about growing anything, and Hostas were not in vogue. Provide a bare minimum of one inch of water to your hosta plants each week. Slight water stress appears as a wilting or drooping of foliage. Those in more shaded spots generally require less attention, especially in areas with reasonably high rainfall. Exposing the Hostas to a fair amount of morning and late afternoon sun usually promotes vigorous growth and better coloration for the plant leaves. To properly water your roses, give them a full watering can of water once or twice a week.