Be cautious not to over-fertilize, as this can lead to lush foliage at the expense of blooms. Applying fertilizer in early June gives plants the nutrients they need to thrive throughout the summer without overstimulating growth.
6. Prune Only What’s Necessary So You Don’t Cut Off Summer Blooms
Pruning is an essential task, but it’s vital to prune carefully to avoid cutting off summer blooms. For hydrangeas that bloom on old wood, limit pruning to removing dead or damaged wood and spent flowers, if necessary.
Always use clean, sharp tools to make precise cuts, and avoid excessive pruning during June. By focusing on minimal and strategic pruning, you can maintain the plant’s shape and health without sacrificing this season’s blossoms.
7. Triage Heat-Stressed Plants Fast With Emergency Hydration
If your hydrangeas show signs of heat stress, such as wilting or browning leaves, act quickly with emergency hydration. Water deeply and thoroughly, ensuring the soil is moistened to a depth of 6 inches. Consider using a watering can or hose with a gentle spray to avoid damaging the plant.
In addition to watering, mist the foliage with water to provide immediate relief and increase humidity around the plant. This can help revive stressed hydrangeas and prevent further damage during heatwaves.
8. Prep Pots and Soil Mix Now If Your Hydrangeas Live in Containers
Container-grown hydrangeas require special attention, as pots can dry out quickly and become hot. Use a high-quality potting mix that retains moisture yet drains well, and consider adding water-retaining crystals to the soil.
Choose containers with adequate drainage holes and place them in locations that receive morning sun and afternoon shade. In June, ensure pots are adequately mulched and consider grouping them together to create a more humid microclimate, reducing water loss and heat stress.
