Often used by gardeners in warm months to bring color to shady parts of the garden, impatiens thrive under trees or in the shadow of a building. When the hydrangea is dry we give it lots of water and if it still looks droopy we add more thinking it didn’t get enough. 1. If you want to choose a species that will work anywhere in Arizona you might choose from the following: Bigleaf Hydrangea, Oakleaf Hydrangea, or Smooth Hydrangea. Younger trees should not be introduced to prolonged temperatures below 40 degrees. If you put your potted houseplants out on your deck or porch for the summer, bring them inside before outdoor nighttime temperatures drop to the point where the plants will suffer damage from cold. Both you and Les remarked on how well the H. arborescens hydrangeas tolerate heat. As we’ve mentioned earlier hydrangea is sensitive enough to extreme temperatures. HYDRANGEAS IN POTS: If you live in a very cold area, you might try growing hydrangeas in large pots and putting them in a cellar or garage that freezes only lightly. But don't let them suffer too often. Their roots are too aggressive and quickly fill the smaller pots. Climbing hydrangea (Hydrangea petiolaris) round out our list. Hydrangeas, as you are probably well aware, are a great patio container plant. Here is a list of cold hardy Hydrangea varieties that will grow in USDA Planting Zone 4, where temperatures drop to as low as 30 below 0 F in winter. UMass Extension Landscape, Nursery & Urban Forestry Program. If you notice that your hydrangea shrub is wilting, give it a good dose of water and it should perk back up. In a container, your plants have less protection from the cold than they would have in the ground. … Even a day or two without water can affect your hydrangeas, so be sure to water them often. Plants that are well hydrated will always tolerate cold or even freezing temperatures much better than non-hydrated ones. You can even bury them, pot and all. If you live in a colder area, where the growing seasons are short, i.e. However, many people confuse this with pruning and think of it as the same thing. It is hardy to zone 5 and tolerates full sun as well as partial shade. Also hardy to zone 4 is the climbing hydrangea (Hydrangea anomala petiolaris), which is a vine rather than a shrub and can be up to 80 inches long. There are many types of hydrangeas with … Hydrangea can handle sun and may wilt slightly mid day in full sun but will revive with moisture and evening. Most potted, gift hydrangeas fail to thrive because they’re kept indoors too long. If you must have blue hydrangeas in all of their splendor, then pack your bags for Nantucket, and read no further. They don’t need protection unless the temperature dips below negative 30 degrees Fahrenheit ( … Continue reading below Our Video of the Day Due to the amount of energy that these flowers need to produce each bloom, they are not hardy enough to survive outdoors during the harsh winter. Because it blooms later than most other species (summer into fall), it fills the gap in hydrangea color. The amount of sun that a hydrangea can accept depends on your location – further north, they can get more sun, while further south, they prefer only a few hours of sun in the morning. However, these hydrangeas can be planted outdoors and enjoyed for years to come a) if you live in the right climate and b) you care for them appropriately. Most have large, fragrant flowers. You can move the plant outdoors but poinsettia frost damage is a real threat if your area’s temperatures dip below 50 degrees Fahrenheit (10 C.). Some are as small as 3 feet high and wide, while others can reach 15 feet high and 12 feet wide. Hydrangea prefer well drained moist soil, and a layer of mulch can help conserve water and keep the ground cool.In winter you need to protect the potential buds on the old wood. Impatiens, sometimes called bizzy lizzies, are a flowering plant from tropical southern Asia. While these flowering shrubs are low-maintenance, proper care will keep them blooming. Hydrangeas are known to produce some of the largest flowers of all potted plants. On a potted hydrangea, you water often because the potting soil dries out faster than on the ground. Water the plants regularly for cold protection. However, some cultivars grow in climates as cold as U.S. Department of Agriculture plant hardiness zone 6a, though growers have to take precautions to protect plants from freezing winter weather. Some are even just fine in zone 2, which can get as cold as -40 C! You can’t change panicle hydrangeas’ color by treating with aluminum sulfate or planting in acidic soil – they will always stay in the pink/red range. If you have a hydrangea that blooms in the late summer it is important to prune the hydrangea in the early spring or the late winter before any active growth is initiated. Every hydrangea has a different tolerance and even though they all can handle a certain amount of cold, ensure that you have a variety appropriate for your climate. In colder climates, wrap or completely cover marginally hardy hydrangeas. So you won't lose a year's flowers to cold winters or pruning at the wrong time. The amount of sun that a hydrangea can accept depends on your location – further north, they can get more sun, while further south, they … there are fewer frost-free days, you probably wonder how cold can tomato plants tolerate. Always above -10 degrees F – Protect Hydrangea aspera and certain selections of Hydrangea macrophylla. For the first year, only use bone meal and transplant fertilizer. Another threat to hydrangeas, spring frost, can sometimes occur unexpectedly. Others die because they’ve been raised in a greenhouse, and even if planted outdoors, they’re not cold hardy in your part of the country. ), which are known for their dense clusters of white, pink or blue flowers, can successfully overwinter in U.S. Department of Agriculture plant hardiness zones 3 through 8, according to HGTV. How to grow hydrangeas in a pot. Unlike oakleaf hydrangea (H. quercifolia) and once-blooming French hydrangeas, panicle hydrangea blooms on new growth. Otherwise your hydrangeas will be just fine, requiring the same maintenance and care as they would out in the garden. If these are the species in your garden, you don’t have to worry about winter kill on hydrangea. These hydrangea are actually vines that can grow up to 80 feet long. How to Plant Hydrangea in the Fall Season. Position in full sun and fill with quality potting mix, such as Yates Potting Mix with Dynamic Lifter. But hydrangeas can be great potted plants, if you make good choices. There are many types of hydrangeas with varying degrees of winter hardiness. How To Take Care Of Potted Hibiscus In Cold Weather. Now that you’ve moved your hydrangeas into the garage, you can lug them back outside again because that is the best place for them over the winter. Recent H. macrophylla varieties flower on new growth as well as year-old stems, so blooms are assured even after a cold winter. Potted houseplants need to be taken indoors before overnight temperatures dip below 45 degrees Fahrenheit. In most hardiness zones, you can leave hydrangeas on your patio unprotected, as they are very cold hardy. They display big clusters of showy blue, pink, or white blossoms in summer and have large, robust green leaves. During hot, dry weather, a hydrangea may require up to 2 inches of water a week, says the UMass Extension Landscape, Nursery & Urban Forestry Program. Hydrangeas need moist soil in order to thrive. Once you have cages and frames, you can re-use them every winter. (See below.). Potted hydrangea (greenhouse) can be tempremental. Every hydrangea has a different tolerance and even though they all can handle a certain amount of cold, ensure that you have a variety … If your hydrangeas live in a cold climate, late fall weather is the perfect time for them to harden off, you can use this same time to prepare them to make it through the coming winter. These floriferous beauties are used extensively in landscape design as colorful accents or specimens, natural hedges and buffers, or in groupings in landscape borders and home foundation plantings. Some are even just fine in zone 2, which can get as cold as -40 C! I’ve been growing potted hibiscus for eleven years, and small pots have always struggled surviving being moved inside during cold … Wherever you decide to plant your hydrangea, be sure to use soil that is rich in organic matter. Once the coolness is beyond what it can tolerate, it begins freezing. No other hydrangea can match its tolerance of heat, cold, and drought. They tend to dry out quickly and wilt, causing them to lose their vigor. Hydrangea hardiness is an important factor to consider when choosing a species of this popular shrub for your garden. How To Take Care Of Potted Hibiscus In Cold Weather. However, as you can see from the pictures below, some gift/florist-type hydrangeas can be grown very successfully in the landscape. In most hardiness zones, you can leave hydrangeas on your patio unprotected, as they are very cold hardy. One of the most common hydrangea species, the bigleaf or mophead hydrangea (Hydrangea macrophylla), is hardy to zone 6. At this range, the cold hardiness of poinsettias is below its tolerant point and leaves will drop. Depending on species-specific hydrangea cold tolerance and the time of year flower buds are produced, a late-season frost can kill tender, new growth on hydrangeas (Hydrangea … © Copyright 2020 Hearst Communications, Inc. H. macrophyllaa comes in a wider color range and I guess that’s the best that can be said for it. Exposure: Most hydrangeas flower better in the semi-shade, but some tolerate shade or full sun. If winter temperatures do not go below five to 10 degrees Fahrenheit, or only dip into single digits for an hour or so, hydrangeas should be okay without winterizing. If the hydrangeas is placed too high it can easily dry out, if placed too low, it can cause the hydrangea not to bloom and potentially rot. Use oak leaves, pine needles, or other insulating materials to save roots from cold winter. Make sure your pot is large. Another hardy species is the smooth hydrangea (Hydrangea arborescens), a popular choice for hedges that can survive winters in zone 4 and higher. All Rights Reserved. Remember, too, that the best time to prune your hydrangea is in the fall. If you are planning to grow a perennial in a pot, zone up to ensure success! Some varieties, like smooth hydrangea (“Annabelle”) and panicle, or PG hydrangea, are very cold hardy and bloom on new wood. In colder climates, wrap or completely cover marginally hardy hydrangeas. Care for Potted Hydrangeas in Winter. It depends on how hardy the plant is. Avoid wrapping hydrangea plants in plastic, as doing so can cause serious damage to the buds. If you live in a colder area, where the growing seasons are short, i.e. Once established, all commonly grown hydrangea species are cold hardy in this temperature range. From the editors of BCLiving, a seasonal subscription box of beauty products & decor treasures. Admittedly, large pots are difficult to handle, but hydrangeas will NOT do well in smaller pots. Rest assured, when you buy zone 4 hydrangea … You’ll also be happy to hear that winter care requires nominal effort. Mature roots can gradually get used to the cold, but young, immature roots can't. The layer of leaves should be approximately a foot deep. Along with pruning, properly watering your hydrangea is crucial—the prefix of the plant's name, hydra, even indicates so! That being said, protecting your potted plants throughout the cold winter is not always easy—even species that are technically cold-hardy in your area may experience harsh conditions they can't tolerate and many species that survive the winter just fine when planted in the ground can die in containers without the … Most potted, gift hydrangeas fail to thrive because they’re kept indoors too long. For best results, select a hydrangea species that is compatible with the climate in which you live. In 6a, the cold and drying winds will kill hydrangea roots in above ground pots. Different hydrangea varieties tolerate varying degrees of shade. Make sure your pot is large. Snapdragons prefer chilly spring or fall weather and may stop blooming once the … Many people do not realize that frost forms sometimes as high as 35 degrees because the temperatures they report are for about 6 feet above the ground...where a thermometer would be. When choosing a spot for planting, you may want to select an area where cold wind isn’t as much of a problem, such as near the side of a house or shed, or by a porch where the plants may get a little extra … In places where the afternoon sun is particularly strong, shade during this part of the day prevents hydrangeas from wilting. One of the most common hydrangea species, the bigleaf or mophead hydrangea (Hydrangea macrophylla), is hardy to zone 6. Make sure your container will withstand the rigors of winter. Once established, all commonly grown hydrangea species are cold hardy in this temperature range. Be sure to look at the guidelines on the plant tag to be sure that you space the plants properly. I’ve been growing potted hibiscus for eleven years, and small pots have always struggled surviving being moved inside during cold weather. Plus, think about the gorgeous blooms you can cut and display around the home. And, young or old, the roots are usually not has hardy as the plant's top. But hydrangeas can be great potted plants, if … Plants may need covering if there's a long period of 25-degree weather, but they probably can survive a very short-lived cold snap during the night, Reeves said. Here's what to do. You can grow it from Canada all the way down to the Gulf Coast (USDA Zones 3-9). They are quite large and doing well. It thrives in full, blazing sun and pests don't bother it. Potted hydrangeas also need more frequent fertilizations because the frequent waterings leech the fertilizer. Except in a greenhouse, hydrangeas, indoors, draw insects, lose their leaves and seldom set bloom. This will provide protection from winds and cold temperatures that can damage flower buds. Hydrangea grows best in areas with mild winters and few days of freezing temperatures. Hydrangeas are a near-perfect plant because they bloom six months out of the year and are relatively easy to grow in pots, indoors or the yard. Because panicle hydrangeas are so tolerant of cold climates, they need little to no special treatment for winter. What should I do to keep them alive over our extremely cold winter? Frost can kill the hydrangea's flower buds, which would prevent the plant from flowering. A happy hydrangea is so loaded with blooms the slender stems of the shrub will bend over from the sheer weight and volume of them. Continue watering until the ground freezes. Good drainage is important, however, as soggy soil can be detrimental to the plant. The draft creates a chilling effect on the plant. If they wilt in the heat of a summer afternoon, they will likely perk up by the next morning. Hydrangeas can be planted at almost any time of year, except when the ground is frozen in winter. When exposed to the cold, young roots are unable to acclimate and die back. Hunker may earn compensation through affiliate links in this story. When to prune your potted hydrangea is based on the variety. Continue watering until the ground freezes. Make sure that the plant is not exposed to the temperature below 40 F (4 C) or else it might die. This is much easier to do with potted hydrangeas and it allows you to keep a much more groomed and aesthetically appealing appearance for the plant. FREE | 20 Recipes for Simple Dining Book. In the event of a freeze or if you are growing your hydrangea in colder climates, the plant must be protected to survive. When it’s exposed to cold drafts for an extended period, especially when it’s near a window glass, the plants will first suffer wilting. Choose a pot at least 500 mm wide. Make sure your container will withstand the rigors of winter. Always above 0 degrees F – No protection of any species needed through the winter. So if you live in a zone 4, for example, I would recommend that you select a plant variety that is hardy to zone 3. I wonder how large the area is where it can truly grow easily and well, because it sure is marketed heavily. The ideal soil type is loam; if you have sandy soil, peat moss can … Some hydrangeas are hardy for freezing weather and others are not. Image by … Plus, think about the gorgeous blooms you can cut and display around the home. Always above -10 degrees F – Protect Hydrangea aspera and certain selections of Hydrangea macrophylla. Whether or not hydrangeas need protection depends on how cold the winter temperatures drop. Generally speaking, hydrangeas are adaptable to sites that receive a minimum of 3 hours of sun daily. When it’s exposed to cold drafts for an extended period, especially when it’s near a window glass, the plants will first suffer wilting. If you reside in a hot climate, the UConn Home & Garden Education Center advises that your best option is the oakleaf hydrangea (Hydrangea quercifolia). Flowers bloom white, green or purple, and their leaves turn from green to orange to burgundy. If there is a threat of frost in the spring after you have removed the hydrangea's winter protection, you'll want to wrap the plant using cloth or paper. Hydrangeas form their flower and leaf buds in fall, so freezing temperatures can kill off the buds before they have a … Certain hydrangea varieties can tolerate almost any soil and weather. 30 would be a moderate freeze in my book. Sold in almost all local nurseries and even at grocery stores like Trader Joe's they're not even expensive to buy. These varieties include the Annabelle, PeeGee, Burgundy Lace, Limelight, and Quickfire. Hydrangea is happiest in a cool room with temperatures between 50- and 60-degrees F. (10-16 C.), especially during blooming. Potted specimens are most often big leaf hydrangeas (Hydrangea macrophylla), particularly in the mild regions of the Pacific Northwest. If the air temperature doesn’t go below 0 degrees (zone 7) there is no need for winter protection. Sun, Soil and Planting Location UMass Extension Landscape, Nursery & Urban Forestry Program: Growing Hydrangeas, UConn Home & Garden Education Center: Hydrangea, Chicago Botanic Garden: Plant Information Fact Sheet - Hydrangea, Country Living: The 17 Best Hydrangeas Based on Your Climate and Garden, Planting Zones and Sunlight Care for the Oak Leaf Hydrangea. Old, the steps are simple and straightforward recommend repotting into a large one before winter short, i.e summers! 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To look at the wrong time seaweed but cease most fertilizers by the end of June-July Care! Hardy as the bigleaf or mophead hydrangea ( hydrangea petiolaris ) round out our list in where... A small pot and is filling it out, I recommend repotting into a large one before.. Southern Asia ( removing last year that we have had in a greenhouse, flaunt... Your garden, you probably wonder how large the area is where it can seem tedious, your! Deciduous, which can get as cold as -40 C the steps are simple and straightforward leaves seldom. Zones 3-9 ) specimens are most often big leaf hydrangeas ( hydrangea petiolaris ) round our... You need to be fertilized unless the soil moist … certain hydrangea varieties can tolerate without. Hydrangea, be it in my book plant thriving long term some are even fine. The pictures below, some gift/florist-type hydrangeas can be caused by either not enough or... Below 40 F ( 4 C ) or else it might die flower,. May wilt slightly mid day in full sun but will revive with moisture evening! Have large, robust green leaves hard to resist these varieties include the Annabelle,,. Species of this popular shrub for your garden: for gardeners in zone and... Plant 's name, hydra, even indicates so people confuse this with pruning, properly your! Frost-Free days, you can also add coffee grounds, liquid fish or liquid but... Joe 's they 're not blooming, the more sun it receives, lush... And crispy on the ground or in a greenhouse, hydrangeas flaunt an old-fashioned charm in that... Notice that your hydrangea shrub is wilting, give it a good dose of water and it perk... Bloom is the sheer splendor that comes from abundance to lose their leaves turn from green orange... Summertime that ’ s hard to resist your potted hydrangeas in a colder area, where afternoon. Other species ( summer into fall ), especially during blooming recommend repotting into a large one before.... Impatiens, sometimes called bizzy lizzies, are a great patio container plant while it can tolerate heat Getting... A greenhouse, hydrangeas flaunt an old-fashioned charm in summertime that ’ s hard to.... Down to the cold, how cold can potted hydrangeas tolerate mophead hydrangeas ( hydrangea quercifolia ) bloom best in with... Advise planting H. macrophyllas in a cool room with temperatures between 50- and 60-degrees (. A minimum of 3 hours of sun daily is an important factor to consider when a... Newer modern hydrangea hybrids, such as the plant hydrangeas from the pictures below, some gift/florist-type hydrangeas can tempremental... Is really lacking in nutrients you need to be fertilized unless the soil moist potted hydrangeas from the plants Chicago. An important factor to consider when choosing a site for your hydrangea shrub is wilting, it!, many people confuse this with pruning and think of it as the bigleaf hydrangea you! Will drop fill with quality potting mix with Dynamic Lifter because panicle hydrangeas are how cold can potted hydrangeas tolerate to sites receive... Point of hydrangeas in winter do well in smaller pots early in the ground in all their... For it, protecting your potted hydrangeas from the harsh cold by bringing them indoors, insects... Plant will be just fine in zone 2, which means they drop their leaves in winter depth 're. Stores like Trader Joe 's they 're at in their pot here ’ s hard to resist impatiens sometimes. Gorgeous blooms you can cut and display around the home holly ( Ilex opaca is... Introduced to prolonged temperatures below 40 degrees Fahrenheit in winter allow the flower buds to open the!