When can hydrangeas go outside
William Taylor
Updated on March 30, 2026
It is always best to plant the potted hydrangea outdoors whenever possible. It should only be planted outdoors in early to mid summer as it needs time to acclimate to outdoor conditions before winter arrives.
How cold can hydrangeas tolerate?
Effectively, a hydrangea should be able to sustain a temperature of minus-10 degrees. But in the real world, temperatures as low as 12 degrees — and late fall or early spring freezes — may reduce the flowering capability of this hydrangea.
Can hydrangeas get too cold?
A few nights at or slightly below 32 degrees Fahrenheit are unlikely to kill a hydrangea or do serious long-term damage. Hydrangeas that bloom on old wood are root hardy down to USDA zones 5 and 6, or minus 20 F to minus 15 F. New-wood bloomers are more cold tolerant, down to zones 3 or minus 40 F.
Can I put my hydrangea outside?
Hydrangeas grown for outdoor planting can be planted out straight away. The best time to plant mophead hydrangeas outdoors is in mid- to late spring when the soil has had a chance to warm up. Hydrangeas like moist, well-drained soil and do best with shelter from the hot afternoon sun.Is 40 degrees too cold for hydrangeas?
Some hydrangeas that bloom on old wood are root-hardy down to -20 °F (-30°C), meaning that any damage that frost will do, will usually be superficial and other than interfering with the plant’s blooming in the next season, it won’t cause the death of the plant. But this is not the case for all hydrangeas.
Can Easter hydrangeas be planted outside?
It is always best to plant the potted hydrangea outdoors whenever possible. It should only be planted outdoors in early to mid summer as it needs time to acclimate to outdoor conditions before winter arrives.
Will hydrangeas survive frost?
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 spp.), resulting in little or no blooms in the coming spring and summer months.
Can hydrangeas be potted?
Most potted, gift hydrangeas fail to thrive because they’re kept indoors too long. … But hydrangeas can be great potted plants, if you make good choices.Can I plant hydrangeas in March?
For best results, plant hydrangeas in spring or fall, when temperatures are mild. You can plant hydrangeas when blooming specimens become available in nurseries in early to mid-spring.
Should I protect hydrangeas from frost?Whether or not hydrangeas need protection depends on how cold the winter temperatures drop. If the air temperature doesn’t go below 0 degrees (zone 7) there is no need for winter protection. In colder climates, wrap or completely cover marginally hardy hydrangeas.
Article first time published onCan hydrangeas survive winter in pots?
The 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. One method is to use foam insulation to protect your potted plants.
Should you cover hydrangeas for spring frost?
In areas that rarely have frost you only need to cover the hydrangea with a burlap bag on the days or nights when frost is predicted, removing it afterward. In areas prone to a lot of winter freezing, hydrangea flower buds may not survive even if they are protected, but leave buds likely will so the plant will not die.
Will hydrangeas come back after a freeze?
Yes, many hydrangeas leafed out early this year, then were hit hard by frost that caused damage to leaves and stems. Fortunately, these are tough plants and many types can be cut back to the ground without damage.
What does hydrangea frost damage look like?
Foliage that has been frost damaged will turn purple/reddish. It may wilt or collapse. In a freeze, the stems, buds and foliage can turn black and dry looking. If you have experienced a frost or unexpected late freeze after your hydrangea have put on fresh new growth, it should be obvious that this is the problem.
Are hydrangeas indoor or outdoor?
Prized for their larger-than-life blooms, hydrangeas are often thought of as outdoor plants, but they can also be successfully grown as blooming indoor houseplants.
How do you care for a potted hydrangea outside?
Hydrangeas in the garden like full sun, but this dries out the soil in containers much too quickly. Place your hydrangeas in a spot that receives full sun in the morning and some shade in the afternoon to keep it from drying out. Move your hydrangea to a pot that is several inches (8 cm.)
How do you care for outdoor hydrangeas?
- Water at a rate of 1 inch per week throughout the growing season. …
- Add mulch underneath your hydrangeas to help keep the soil moist and cool. …
- Apply fertilizer based on your specific hydrangeas. …
- Protect against pests and disease by choosing cultivars with resistant traits.
What do pink hydrangeas mean?
Pink hydrangeas symbolize heartfelt emotion. Blue hydrangeas symbolize frigidity and apology. White hydrangeas symbolize boasting or bragging. Purple hydrangeas symbolize a desire to deeply understand someone.
How do you take care of hydrangeas in the winter?
Hydrangeas in Winter Protect hydrangeas during winter with a layer of mulch. Leave faded blooms to create winter interest. Protect hydrangeas during winter with a layer of mulch. Leave faded blooms to create winter interest.
Do hydrangeas like coffee grounds?
If you’re growing hydrangeas, use coffee grounds to affect their color. Coffee grounds add extra acidity to the soil around hydrangeas. … Seedlings thrive off the nitrogen content in coffee, so give them a boost by making a natural fertilizer from the grounds.
Will potted hydrangeas come back every year?
If you were given a potted hydrangea as a gift, it was likely already in bloom when you received it. Many people discard their hydrangeas after the flowers initially fade, but with the proper care, the plant will bloom again.
How often should hydrangeas be watered?
It’s better to give the plant plenty of water a few days a week rather than a little every day. And make sure you keep the flowers dry when watering. On warm days it’s best to water early in the morning or in the evening. This is when the plant is ‘resting’ and can absorb the water best.
How many days do hydrangeas last?
For lasting arrangements (about two to three days for fresh cut flowers), take our advice and gather blooms in the morning. Pick ones that are open and colorful. Mature flowers with a slightly papery feel will hold up best. Immediately place the stems, cut at an angle, in a bucket of water.
Are hydrangeas good in shade?
These shrubs grow best in partial or full shade, with a little direct morning sun and a lot of indirect light, such as the filtered light found under a high-canopied leafy tree. Many varieties of hydrangea love this type of location.
What happens if you don't cut back hydrangeas?
Hydrangeas that bloom on old wood do not need pruning and are better off for it. If you leave them alone, they’ll bloom more profusely the next season. … Just remember new growth may come, but that new growth will be without blooms next season.
When should you cut back hydrangeas?
Trimming should be done immediately after flowering stops in summer, but no later than August 1. Do not prune in fall, winter, or spring or you could be cutting off new buds. Tip-pruning the branches as leaves emerge in spring can encourage multiple, smaller flower heads rather than fewer larger flower heads.
How do I know what kind of hydrangea I have?
If the flower buds open a green color, then turn white, and as they age turn green or greenish brown, you have an arborescens type. If the flowers open white and stay white until they get old, then you probably have a macrophylla type. White flowering macrophylla types are less common, but they do exist.
Why didnt my hydrangea bloom this year?
The primary reasons hydrangeas don’t bloom are incorrect pruning, bud damage due to winter and/or early spring weather, location and too much fertilizer. Hydrangea varieties can be of the type that blooms on old wood, new wood or both. Old wood is the current year’s growth and new wood is next year’s (spring) growth.
Do you plant hydrangeas in sun or shade?
Most hydrangeas prefer only morning sun. Yet one type of hydrangea can soak up the sun all day: the panicle hydrangea. While they can stand the sun, these do just fine in partial shade, too. Plus, panicle hydrangeas are the hardiest hydrangeas.
What do you do with hydrangeas after frost?
Once you find it, wait for the stem to mature to the point that it produces bark and then scrape it back to below the frost-damaged points. This should leave healthy wood with the green layer exposed. Any buds that are below this frost damage will still provide beautiful blooms.
Should I cut my hydrangea back for winter?
Hydrangeas bloom either on old wood or new wood, depending on the hydrangea type. New-wood blooming hydrangeas should be cut back in late winter before new growth begins, while old-wood bloomers require pruning right after flowers fade in late summer.