On the other hand, panicle hydrangeas (Hydrangea paniculata) and smooth hydrangeas (Hydrangea arborescens) bloom on new wood. These can be pruned in late winter or early spring before new growth begins. Use sharp, clean pruning shears to remove dead or damaged wood and shape the plant as desired.
4. Wake Up Roots With Deep, Slow Spring Watering
As temperatures rise, it’s time to encourage your hydrangeas to emerge from dormancy with regular watering. Water deeply and slowly, allowing the moisture to penetrate the soil and reach the roots. This can be achieved by letting a hose trickle at the base of the plant for about 30 minutes once a week.
Ensure the soil is consistently moist but not waterlogged, as hydrangeas are susceptible to root rot. Mulching around the base can help retain moisture and maintain even soil temperatures.
5. Jump-Start Growth With a Balanced, Timed Fertilizer Boost
Providing your hydrangeas with a well-balanced fertilizer can give them the nutrients they need to start growing vigorously. Choose a slow-release fertilizer with equal parts nitrogen, phosphorus, and potassium, such as a 10-10-10 or 14-14-14 mix.
Apply the fertilizer in early spring, just as new growth begins. Follow the package instructions for the correct amount based on your plant size and age, and evenly distribute the fertilizer around the drip line of the plant to avoid burning the roots.
6. Warm the Soil With Mulch, but Don’t Smother the Buds
Mulching is a great way to insulate the soil and retain moisture for your hydrangeas. Use organic mulch such as shredded bark or pine needles to cover the ground around your plants, keeping it about 2-3 inches deep.
Avoid piling mulch directly against the stems, as this can lead to rot and pest issues. Instead, leave a small gap around the base to allow air circulation and prevent smothering any emerging buds.
7. Use Strategic Sun Exposure to Gently Break Dormancy
Hydrangeas generally prefer morning sun and afternoon shade, but during the early spring, a bit more sunlight can help break dormancy. If possible, trim any overhanging branches that might block sunlight and reposition potted hydrangeas to sunnier spots.
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