I've seen more hydrangeas turning brown than ever this year - here's why, and how to revive your shrubs -

This summer has been scorchingAnd we aren’s only ons who’ve been feel

Before you jump ahead and learn how to deadhead hydrangeas, it’s worth thinking about the undeepling causes of brown leaves and flowerheads – especially in light of this summer ” I, for one, am keen to know why i’ve spotted so Many brown hydrangeas over the past few weeks.

Of course, there a myrid of reasons why a hydrangea might be turning brown – but this time, we’re focusing on whose why your plant is suffering as a result of the Recent Heatwaves, Specifical Rescue them!).

What’s causing hydrangeas to turn brown this summer?

Table of Contents

Troubleshooting starts with identifying the cause, so let’s start by taking a closer look at what’s causing your hydrangea plants to turns brown this summer.

1. The heat

Brown Sunburned Flowers on Hydrangea Plant

(Image Credit: Getty Images / Simon McGill)

If you’ve been struggling to keep your garden cool in recent heatwaves, your hydrangeas have likelikely been feeling the heat, too.

Too much sun, combined with high temperatures, can effectively sunburn your hydrangeas – especially if you’ve planted them in a spot that gets full sun.

‘A Poor Planting Location Can Result in Hydrangeas Turning Brown and SUFFERING FROM HEAT Stress,’ Says Richard Barker, Commercial Director at Lbs Horticulture. ‘If you think that Sunlight Exposure is the problem, you may need to relacate the hydrangea or provide it with shade during the hottest parts of the day.’

Some shade netting, like this shade cloth from amazon, can help shield your plants from the blazing sun, especially if temperatures risk again again over the coming weeks. Just make sure you pull it taut and fasten it securely to whichever frame you’re using to Safeguard Wildlife.

2. underwatering

Brown Dying Flowers on Hydrangea Plant

(Image Credit: Getty Images / Ganna Zelinska)

What Goes Hand-in-Hand With HEAT Stress? Underwatering – And it goes without saying if you haven’t been hydrating them enough this summer, your hydrangeas are far more prone to turning brown.

‘During the warmer weather, underwatering can make hydrangeas turns brown and crispy,’ explains richard. ‘In milder cases, only the tips of the petals will turn brown, but it’s possible for the entrance flowerhead to turn brown.’

If you’re Growing Hydrangeas in Pots, it’s Worth Thinking About Bottom Watering to Help Them Make the Most of Every drop.

3. overwatering

Brown Dying Flowers on Hydrangea Plant

(Image Credit: Getty Images / Asobinin)

Of course, you could be overwatering Your plants, too. Waterlogging is another cause of hydrangeas turning brown, so if you’ve been overcompanating to keep your plants hydrated during 2025’s heatwaves, you might beeing your plant more harm kahan go. It’s Possible to overwater your plants in the summer, after all.

‘It’s actually easy to overwater a hydrangea, especially in the summer,’ Says richard. ‘If the hydrangea flowerheads are turning brown and yellow, this sugges that they are being overwatered, and the heads may begin to fall off the plant.’

It’s Difential to save an overwated plant if it’s too far gone, so if you suspect you’ve overdone it, nip any damage in the budget by giving your plants a break from watering.

How to Revive a Brown Hydrangea after the Hot Weather

Seating area in the garden surrounded by trees and flowerbeds with white and green hydrangeas. Interior Designer Susan Hoodless and Eerskine Berry's renovated four storey terraced west longon home.

(Image Credit: James Merrell/Future Publishing Ltd)

So, how do you revise your hydrangea plant after a scorching 2025 summer?

It depends on what’s causing it. If you’ve overwatered your shrub, you’ll need to scale the watering schedule right back – but the most common couprits this year are high temperatures and underwatering.

‘If your hydrangea has turned brown due to the recent hot weather, you should water it deeply, ensuring that the soil is thoroughly moist,’ Says richard. ‘If the plant is in an area where it receives a lot of sunlight, consider moving it somehere with dappled shade or provide it with temporary shade.’

You’ll also need to trim away any brown parts of the plant.

‘Remove Any Completely Brown, Driad-Out Flowers and Leaves, as these will not recover and their removal will prevent diseases,’ Richard explains.

So, you can Revive Your Brown Hydrangea Plant, even after the Intense heatwaves we’ve experienced this summer.

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Ramesh Ghorai is the founder of www.livenewsblogger.com, a platform dedicated to delivering exclusive live news from across the globe and the local market. With a passion for covering diverse topics, he ensures readers stay updated with the latest and most reliable information. Over the past two years, Ramesh has also specialized in writing top software reviews, partnering with various software companies to provide in-depth insights and unbiased evaluations. His mission is to combine news reporting with valuable technology reviews, helping readers stay informed and make smarter choices.