Can hydrangeas handle hot sun?

Author: Eliezer Quigley  |  Last update: Tuesday, November 14, 2023

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.

Can hydrangeas tolerate high heat?

Panicle hydrangeas can handle hot sun

While they are drought tolerant and stand up to heat, I still like to provide shade during the hottest part of the day. And just because they are drought tolerant doesn't mean you should let them wilt. As with all hydrangeas, plants will thrive with regular irrigation.

Can hydrangeas take hot afternoon sun?

Bigleaf hydrangeas, also known as hydrangea macrophylla, vary especially with some of the newer cultivars being bred to better tolerate heat and sun, but most of these including the mopheads and lacecaps prefer some shade, especially during the afternoon.

What does a hydrangea look like with too much sun?

Just like Hydrangeas getting too much sun, a Hydrangea getting too much sun may develop wilting and yellowing leaves, even some brown spots.

How do I protect my hydrangeas from hot sun?

Provide Some Shade

Most varieties of hydrangea prefer afternoon shade. If you think your hydrangea can benefit from a break from the sun you can purchase shade cloth online or from your local garden center. But honestly using a beach umbrella or an old bed sheet will work just as well.

6 Tips For Growing Hydrangeas in HOT Climates! 🔥☀️🔥

Why are my hydrangeas wilting on a hot day?

Hydrangea Heat Stress

Heat and drought stress can cause the stomata of your hydrangea plant to remain open as they try to absorb water vapor from the environment that they are in. Unfortunately, this causes water to be lost more than it is gained which over time translates into wilting.

What happens if you plant hydrangeas in full sun?

Many people think that you need a shady garden in order to grow hydrangeas. While that is true for some varieties, some hydrangeas thrive in sunny spots and even need full sun to develop into the fullest plants and the brightest blooms.

What is the best hydrangea for full sun?

While several species of hydrangeas thrive in shade, panicle hydrangeas (Hydrangea paniculata) are the best for growing in full sun. These summer-blooming shrubs produce large clusters of white flowers for several weeks. The showy blooms fade to shades of pink or red before drying to beige.

Can too much sun cause a hydrangea not to bloom?

TOO MUCH SUN

Conversely, too much direct sun may stress hydrangea plants, which can force them to conserve energy by not forming flowers.

How many hours of sun can a hydrangea take?

The further north your garden is located, the more sunlight your hydrangeas need. An average rule of thumb is six hours of sunlight per day. However, hydrangeas growing in the south can perform on only three hours of sunlight.

Do hydrangeas hate heat?

"Hydrangeas can look stressed in extreme heat but will perk up when temperatures drop," says Clay. "If the plant is looking a bit sad even with cooler temperatures, it likely needs water."

How often should I water hydrangeas in hot weather?

Hydrangeas need more water than most garden plants and will begin to wilt quickly without it. To ensure that Hydrangeas thrive, water deeply two to three times a week in the summer. Be sure to water in the morning or evening so that water does not evaporate as quickly as it would during the heat of the day.

Can you add coffee grounds to hydrangeas in summer?

It's best to start adding coffee grounds to the soil months before the blooming season begins, ideally in the late fall. You can repeat the process with your typical fertilizing schedule.

Where should you not plant hydrangeas?

Where to plant hydrangeas:
  1. The best location is one that receives morning sun and afternoon shade. ...
  2. Consider mature size, give it plenty of room to grow.
  3. Choose an area with excellent drainage. ...
  4. Don't plant beneath a tree—the root competition and lack of sunlight will prevent them from thriving.

Can hydrangeas take full sun all day?

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.

How do I get my hydrangeas to bloom all summer?

15 Tips To Keep Your Hydrangeas Blooming All Season Long
  1. 1 Give Them Space.
  2. 2 Choose The Right Plant.
  3. 3 Get To Know The Hydrangea.
  4. 4 Limit Feedings.
  5. 5 Avoid Direct Sunlight.
  6. 6 Enrich Their Soil.
  7. 7 Water Them Properly.
  8. 8 Mulch, and More Mulch.

Do hydrangeas need a lot of water?

The hydrangea should be watered thoroughly at least 3 times a week. Always water the plant all the way around the container, not just in one place. Water should come out the bottom of the pot. Never let it sit in water which will cause the roots to rot away.

What hydrangea is best for heat?

If You're Looking For Heat-Tolerant Hydrangeas

Some of the most popular heat-tolerant varieties include the bigleaf hydrangeas (Hydrangea macrophylla) in the Let's Dance series and smooth hydrangeas (Hydrangea arborescens) in the Incrediball series.

Can endless summer hydrangeas take afternoon sun?

Endless Summer hydrangeas should be planted in a place that receives morning sun and dappled afternoon shade. "The amount of sun they can tolerate depends on the zone," says Mcenaney. "Endless Summer hydrangeas that are planted in zone 4 can tolerate more afternoon sun than those planted in zone 9."

Do hydrangeas need to be cut back?

Timing depends on the type of hydrangea you have, and there are many. First, know hydrangeas do not have to be pruned — unless the shrub has grown too large for its space or unruly and needs a little shaping up. Otherwise, you can simply clean up the plant by removing dead branches and deadheading spent blooms.

What is the most drought tolerant hydrangea?

Stephen Sullivan, the editor at Plant Native, says: 'Among the different types of hydrangeas, the Oakleaf hydrangea (Hydrangea quercifolia) and the Panicle hydrangea (Hydrangea paniculata) tend to be more resilient in dry conditions compared to the Bigleaf hydrangea (Hydrangea macrophylla).

What temperature can hydrangea tolerate?

The hardiness zones for H. macrophylla are 6 to 9. 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.

Does heat affect hydrangea blooms?

"In this heat, hydrangeas—especially the blue/pink bigleaf or "French" hydrangeas—will transpire water vapor from their leaves faster than their roots can replace the water," says Doggett. "This causes the stems, leaves, and blooms to wilt or droop by late afternoon."

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