Southern Summer Hydrangea Care Guide
Summer Hydrangea Care Guide
Keep your hydrangeas thriving through the Louisiana heat - Hydrangea may look delicate, but with the right care they can stay lush and beautiful all summer—even in intense heat.
1. Water Deeply
Hydrangeas are thirsty plants, especially in summer.
- Water deeply 2–4 times per week (more during heat waves)
- Aim for 1–2 inches of water weekly
- Water at the base, not over the leaves
- Best time: early morning
Wilting in the afternoon?
That can be normal in extreme heat. If they’re still wilted by morning, they need water.
2. Morning Sun, Afternoon Shade
In Louisiana, too much harsh afternoon sun can scorch leaves and blooms.
Ideal placement:
✅ Morning sun
✅ Bright filtered light
✅ Afternoon shade
Watch for:
- Brown crispy edges
- Faded blooms
- Drooping leaves
Those usually mean too much sun or not enough water.
3. Mulch Is Your Best Friend
Add 2–3 inches of mulch around the base.
Mulch helps:
- Hold moisture
- Keep roots cool
- Reduce weeds
Keep mulch a few inches away from the stems.
4. Deadhead Spent Blooms
Snip off faded flowers to keep plants tidy and encourage energy toward healthy growth.
Cut just above a healthy set of leaves.
5. Fertilize Lightly
Too much fertilizer = big leaves, fewer blooms.
Use a slow-release flowering shrub fertilizer in early summer if needed.
Avoid heavy fertilizing in extreme heat.
6. Don’t Panic Over Leaf Spots
Humidity can cause fungal issues.
Common summer problems:
- Leaf spots
- Powdery mildew
- Yellowing leaves
Help prevent this by:
- Improving airflow
- Avoiding overhead watering
- Removing damaged leaves
7. Protect New Plantings
Recently planted hydrangeas need extra attention.
New plants may need:
- More frequent watering
- Temporary shade cloth
- Extra mulch
They’re more vulnerable than established shrubs.
Quick Hydrangea SOS
Droopy? → Needs water or shade
Brown edges? → Too much sun
No blooms? → Wrong pruning or too much fertilizer
Yellow leaves? → Water stress or drainage issues









