Caring for Your Hydrangeas in the Summer Heat

Hydrangeas are a beloved staple in many gardens, known for their stunning blooms and lush foliage. But as the summer heat ramps up, these beauties need extra care to thrive.

In this blog, we’ll guide you through the best practices to keep your hydrangeas healthy, vibrant, and blooming all season long.

Why Summer Heat Affects Hydrangeas
Hydrangeas love sunlight, but they also prefer moisture-rich soil and moderate temperatures. When the mercury rises, your hydrangeas may face stress, showing signs of wilting, browning leaves, or even scorch marks on the blooms. The intense heat can dry out the soil quickly, especially if you’re experiencing prolonged periods of drought or high temperatures. However, with the right care, you can ensure that your hydrangeas continue to shine throughout the summer.

1. Watering: The Most Important Step
One of the biggest challenges hydrangeas face in the heat is dehydration. To help your hydrangeas survive during the hottest days, regular watering is crucial.

• Deep Watering: Hydrangeas need deep watering to ensure their roots get the moisture they need. Water deeply at the base of the plant, not just on the surface. Aim for around 1-2 inches of water per week, depending on weather conditions.
  
  
• Watering Time: The best time to water is early in the morning when temperatures are cooler. This reduces the risk of water evaporating before it reaches the roots.
  
  
• Check Soil Moisture: Before watering, check the soil a few inches down to ensure it’s dry. Over-watering can be just as harmful as under-watering, so it’s important to find the right balance.

2. Mulch to Retain Moisture
Mulching is an easy way to help your hydrangeas survive during summer heat. Mulch acts as a barrier to prevent moisture from evaporating too quickly, keeping the soil cool and moist.

• Mulch Types: Organic mulches like bark, straw, or wood chips work best. Avoid using synthetic mulches that may not allow the soil to breathe.
  
  
• How to Apply: Spread a 2-3 inch layer of mulch around the base of your hydrangeas, making sure not to pile it directly against the stems. This will help retain moisture and reduce the need for frequent watering.

3. Protect from Intense Afternoon Sun
While hydrangeas thrive in bright light, they can suffer if exposed to harsh afternoon sun. The intense heat can cause their leaves and flowers to scorch, leading to unattractive brown patches.

• Provide Shade: If your hydrangeas are planted in a spot where they get afternoon sun, consider providing some shade. You can use shade cloth, garden structures like arbors, or even strategically placed taller plants to shield your hydrangeas from the hottest part of the day.
  
  
• Location Matters: When planting new hydrangeas, choose a location where they get morning sun and afternoon shade for the best results. This will allow them to get the light they need without the stress of midday heat.

4. Pruning and Deadheading
Hydrangeas don’t require much pruning during the summer, but deadheading spent blooms can help keep your plants looking fresh and encourage further blooms in certain varieties.

• Deadheading: Remove faded blooms to prevent the plant from spending energy on seed production. For varieties like the Endless Summer Hydrangea, removing dead flowers can lead to a second round of blooms.
  
  
• Avoid Heavy Pruning: It’s best to wait until after the blooming season to prune hydrangeas. Pruning too early in the summer can reduce the number of blooms, as many hydrangeas bloom on old wood.

6. Watch for Pests and Disease
Hot and humid conditions can attract pests and increase the likelihood of disease. Be on the lookout for common hydrangea pests such as aphids, spider mites, and slugs, which can damage the foliage and flowers.

• Inspect Regularly: Check your hydrangeas weekly for any signs of pests or disease. Look for discolored leaves, sticky residue (from aphids), or webbing (from spider mites).
  
  
• Natural Remedies: If you spot any pests, try using insecticidal soap or neem oil as an organic solution. For mildew or mold, ensure proper air circulation around your hydrangeas and remove any affected leaves.

Hydrangeas are resilient plants that, with the right care, will reward you with stunning blooms throughout the summer. By keeping your hydrangeas well-watered, protected from excessive sun, and regularly maintained, you can ensure they continue to thrive even during the hottest months.

Visit Hinsdale Nurseries for expert advice, high-quality hydrangeas, and everything you need to keep your garden beautiful all summer long.