To extend the bloom period of your panicle hydrangeas, focus on providing the right nutrients at the right time. Here are some tips:
Prune in spring: Prune your panicle hydrangeas just before the blooming period begins in spring. This will strengthen the stems and stimulate vigorous growth, leading to more abundant blooms.
Fertilize with a balanced fertilizer: Use a balanced fertilizer like a 10-10-10 N-P-K ratio to give your hydrangeas a nutrient boost. This will provide them with the necessary energy to produce more flowers.
Add phosphorus: Consider using a "bloom booster" fertilizer with a higher level of phosphate, such as osmocote (14-14-14). Phosphorus is crucial for flower production, but be careful not to overdo it as too much can damage the plant.
Improve soil drainage: If your soil is heavy, add coarse sand or organic matter to improve drainage and permeability.
This will increase the organic matter content and create a more favorable environment for the roots
By following these simple nutrient management techniques, you can extend the bloom period of your panicle hydrangeas and enjoy their beautiful flowers for longer.