This year, an unusual number of hydrangeas are turning brown. Here's an explanation for this phenomenon and tips on reviving your brownish shrubs.
Summer is in full swing, and with it comes the risk of our beloved hydrangeas turning brown. This common issue can be attributed to several factors, including water deficiency, intense sunlight causing sunburn, frost damage, or fungal infections.
One solution to shield hydrangeas from the blazing sun is by using shade netting, such as shade cloth from Amazon. This simple measure can help protect these delicate plants from the harmful effects of the scorching sun.
However, it's not just the lack of water that causes hydrangeas to turn brown. Overwatering can also be a culprit. If your hydrangea flowerheads are turning brown and yellow, it suggests overwatering. To revive an overwatered hydrangea, nip any damage in the bud by giving your plants a break from watering.
High temperatures can also cause hydrangeas to turn brown. If you notice your hydrangeas showing signs of heat stress, consider moving them to dappled shade or providing them with temporary shade. If the plant is in a sunny location, this simple adjustment could make all the difference.
Underwatering can make hydrangeas turn brown and crispy in warm weather. In mild cases of underwatering, only the tips of hydrangea petals may turn brown, but the entire flowerhead can also turn brown. If your hydrangea has turned brown due to high temperatures, water it deeply and ensure the soil is thoroughly moist.
Waterlogging is another cause of hydrangeas turning brown. To prevent this, ensure that your hydrangea is planted in well-draining soil and that the roots are not waterlogged.
Removing any completely brown, dried-out flowers and leaves from the hydrangea plant can also help prevent diseases. These removed parts will not recover and their removal will prevent the spread of diseases.
In some cases, it might be difficult to save an overwatered plant if it's too far gone. However, with proper care and attention, many hydrangeas can recover from the effects of high temperatures and improper watering.
Sophie King, our new Gardens Editor, joined the team in June 2024. She brings a wealth of knowledge and passion for gardening, and we're excited to have her on board to help us all keep our gardens thriving.
In conclusion, ensuring adequate watering—especially at the roots—and protecting hydrangeas from strong sun can prevent this browning. By following these simple tips, you can help your hydrangeas survive the summer and continue to bloom beautifully.
