Growing & Maintenance Tips for Hydrangea arborescens Invincibelle Garnetta®
We recommend a minimum of six hours of sun for smooth hydrangeas like Invincibelle Garnetta for the strongest stems and the most abundant flowers. In hot climates, afternoon shade is beneficial, but some sun is still recommended for the best results.
Prune Invincibelle hydrangeas in early spring, just as the new growth begins to emerge on the stems. Remove any dead wood and cut the entire plant back by about one-third of its total height. This helps to preserve the strong woody base while also encouraging new growth for the best blooming.
A 2-3" (5-7.6 cm) layer of shredded bark mulch helps shallow-rooted hydrangeas to conserve moisture and keep roots growing vigorously, which ensures the best performance. Fertilize in early spring, after the ground has thawed but before new growth begins, to ensure the best results.