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Hydrangeas are popular flowering shrubs known for their large, colorful blooms. Proper pruning in June can promote healthier growth and maximize flowering for the upcoming seasons. Understanding the specific type of hydrangea you have is essential for effective pruning.
Understanding Your Hydrangea Type
There are several types of hydrangeas, each with different pruning needs:
- Bigleaf hydrangeas (Hydrangea macrophylla): Bloom on old wood.
- Panicle hydrangeas (Hydrangea paniculata): Bloom on new wood.
- Smooth hydrangeas (Hydrangea arborescens): Bloom on new wood.
- Oakleaf hydrangeas (Hydrangea quercifolia): Bloom on old wood.
Timing and Tools for Pruning
The best time to prune hydrangeas in June depends on the type. Use sharp, clean pruning shears to make clean cuts, which help prevent disease and promote healthy growth. Always wear gloves to protect your skin from sap or thorns.
Pruning Bigleaf and Oakleaf Hydrangeas
Since these bloom on old wood, prune immediately after flowering in late summer or early fall. Remove dead or damaged stems and cut back about one-third of the remaining stems to shape the shrub. Avoid heavy pruning in June, as it may reduce next year’s blooms.
Pruning Panicle and Smooth Hydrangeas
These hydrangeas bloom on new wood, so June is an ideal time to prune. Cut back the previous year’s stems to about 12 inches above ground or to a healthy pair of buds. This encourages vigorous new growth and abundant blooms later in the season.
Pruning Tips for Maximum Blooming
Follow these tips to ensure healthy growth and vibrant blooms:
- Always prune with clean, sharp tools to prevent disease.
- Remove dead, damaged, or crossing stems to improve air circulation.
- For old-wood bloomers, prune lightly to preserve buds.
- For new-wood bloomers, prune more heavily to encourage new growth.
- Avoid pruning into old wood if your hydrangea blooms on it, to preserve next year’s flowers.
Additional Care After Pruning
After pruning, mulch around the base of the plant to retain moisture and regulate soil temperature. Water regularly, especially during dry spells, to support healthy regrowth. Fertilize with a balanced, slow-release fertilizer in early summer to promote lush foliage and blooms.
Summary
Pruning hydrangeas in June can lead to a bountiful display of flowers in the following seasons. The key is knowing your hydrangea type and pruning accordingly—light pruning for old-wood bloomers and more vigorous cuts for new-wood bloomers. Proper tools, timing, and care will ensure your hydrangeas thrive and bloom beautifully.