For the best results, repot your hydrangea in spring or summer while the plant's roots are actively growing. Choose a pot with drainage holes only 1 or 2 inches larger in diameter than its current pot..
In respect to this, can I replant a potted hydrangea?
Potted Hydrangea plants dry out quickly. This is the most challenging thing about keeping them indoors in April and May. The best thing to do is to immediately transplant your greenhouse Hydrangea into a slightly larger pot. Be sure the pot you use is about an inch larger on all sides and has a drainage hole.
Also, how long does it take for a hydrangea to grow to full size? Hydrangeas are classified as rapid growers, or 25 or more inches per year until the plant reaches maturity. A "tree" format plant will become at least 3 inches wide at a point 4 1/4 feet high and grow at least 13 feet high.
Additionally, what soil is best for hydrangeas?
Most hydrangeas thrive in rich, porous, somewhat moist soils. Add compost to enrich poor soil. They prefer full sun in the morning, with some afternoon shade; however, many will grow and bloom in partial shade. This is especially true for the Bigleaf hydrangeas.
Do hydrangeas come back every year?
Since they bloom on previous years' growth AND the new season's growth, you can leave them all winter long to achieve double the blooms next spring. Do NOT prune the hydrangea back in fall. Mound the mulch or leaves around your plants at least 12” high to protect the flower buds that will bloom early next year.
Related Question Answers
How do you care for a potted hydrangea?
Potted hydrangeas – often called florist hydrangeas – are easy to care for indoors, providing you keep the soil moist. Don't let them dry out! You'll find that those large leaves and big blooms make them thirsty plants. But don't allow water to accumulate at the bottom of the pot.Do Hydrangeas like to be root bound?
Hydrangeas need consistent moisture to produce their large leaves and flowers. When a hydrangea becomes root bound, outgrowing its current pot, its roots cannot take up water as easily as when they can grow freely.What is the best compost for hydrangeas in pots?
So a general rule of thumb is if you have blue Hydrangeas you need a good quality ericaceous (acid) compost to keep them blue and if you have pink Hydrangeas any good quality shrub compost should be fine. Most other types of Hydrangeas will be fine with good quality shrub compost.Why are my hydrangeas not blooming?
Probably the top cause of hydrangeas not flowering is pruning at the wrong time. For once-blooming hydrangeas, pruning during late summer, fall or in early spring the following year can remove flower buds. New repeat-blooming hydrangeas overcome this problem by flowering on both old stems and new growth.Will Hydrangea roots damage pipes?
The only reason a plant root might invade a pipe is if it leaks water. Your hydrangea roots won't hurt the pipes you found. On the other hand, a tree planted over pipes might damage them due to the tree's roots swelling and gradually bending the pipe.What do I feed hydrangeas?
Fertilizing: Hydrangeas do especially well when fertilizers are effectively used in spring or early summer. We recommend using a granular, slow-release fertilizer with a high percentage of phosphorus (the middle number in the NPK ratio).How long do potted hydrangeas last?
Move the hydrangea to a warmer room, with temperatures between 55 and 60 degrees Fahrenheit, after six weeks of cooling. Resume your regular watering and fertilizing schedule. The hydrangea will bloom in approximately four months.Will potted hydrangeas rebloom?
Although you can transplant these hydrangeas outdoors after they stop blooming, it's also possible to force them into bloom a second time as a potted plant. Reblooming hydrangeas requires proper pruning and care, along with a dormant period, to produce attractive flowers.Is Miracle Gro good for hydrangeas?
Gardeners who want robust and healthy hydrangeas must focus on providing enough sunshine and water for their plants. Hydrangeas also require fertilization to thrive; however, they don't require special fertilization. All-purpose Miracle-Gro fertilizer is well suited for hydrangeas.Why is my potted hydrangea dying?
Water StressThey quickly begin to wilt in dry soil. Check soil moisture daily and water the hydrangea when the top inch feels dry. Soggy soil can result in root rot, which can also cause wilting, so avoid overwatering and empty the collected water from the drip tray after each irrigation.Are potted hydrangeas perennials?
Most potted, gift hydrangeas fail to thrive because they're kept indoors too long. 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. But hydrangeas can be great potted plants, if you make good choices.How often should hydrangeas be watered?
Deeply water 3 times a week to encourage root growth. Bigleaf and smooth hydrangeas require more water, but all varieties benefit from consistent moisture. Use a soaker hose to water deeply and keep moisture off the flowers and leaves. Watering in the morning will help prevent hydrangeas from wilting during hot days.Can potted hydrangeas survive winter?
Potted Hydrangeas – Winter ProtectionThe best hydrangea winter protection for potted plants is to bring them inside prior to the first frost. If they are too cumbersome to move, they can remain outside and be protected by covering the entire pot and plant.Can you grow hydrangeas from cuttings?
Once you have selected a stem to propagate the hydrangea, take a sharp pair of shears and cut the stem off just below a leaf node. While rooting hormone will increase the chances of successfully propagating hydrangeas, you can still propagate hydrangea shrubs without it. Now, stick the cutting into damp potting soil.Can you split a hydrangea?
If you don't see any shoots or are getting pieces without roots, entire hydrangea plants can be dug and split into two or more pieces. The best time to divide bigleaf hydrangeas is very early spring, just as new green buds are starting to swell and open along the stems.What side of the house do you plant hydrangeas?
Light-O-Day would be best planted on the east side to protect the variegated foliage. The only thing to watch for with hydrangeas on the south side is to make certain that you water deeply the first couple of years to grow good roots and get them established.Do hydrangeas do well in pots?
Hydrangeas grown in the ground or in containers require 3 basic things; well-drained soil, the proper amount of sunlight and lots of moisture. Growing hydrangeas in pots is a great option for people who are limited in space, or would like to create a beautiful new look in their garden.Do rusty nails make hydrangeas blue?
Blue blooms come from acidic soils that allow for greater absorption of naturally occurring aluminum in the dirt. One trick for raising soil acidity and increasing the plant's aluminum intake is to bury a rusty iron nail in the ground near the hydrangea.Can you overwater hydrangeas?
Overwatering hydrangeas impacts leaf growth in a range of ways. Root rot caused by overwatering produces yellowed leaves rather than dark, rich green leaves. An overwatered plant may shed leaves prematurely, or there may appear to be an overgrowth of green foliage due to stunted flower growth. 
Matthew Cannon 
