Additional Information about Hydrangea macrophylla 'SMNHMP'

Hydrangea arborescens: Blooms on new wood, prune in late winter or early spring.

Hydrangea macrophylla: Blooms on old wood, do not prune. Remove only spent flowers and dead, damaged or unsightly wood.

Hydrangea paniculata: Blooms on new wood, prune in late winter or early spring.

Hydrangea quercifolia: Blooms on old wood, do not prune. Remove only spent flowers and dead, damaged or unsightly wood.

Hydrangea serrata: Blooms on old wood, do not prune.

Growing & Maintenance Tips for Hydrangea macrophylla 'SMNHMP'

All hydrangea naturally undergo some colour change to their flowers as they age. Adjusting the pH balance of the soil (the addition of aluminium sulphate) can change the flower colour from pink to red in this cultivar. Most cultivars thrive in full sun to partial shade as long as they have adequate moisture and a rich, well-drained soil.