Whatever you do now, DON'T DO THIS

Plus, help for flowerless irises

Hi, guys!

Quite a few readers have written to me this week with questions about whether they should be pruning their hydrangeas.

There are several popular species of hydrangea, each with different guidelines:

• Hydrangea macrophylla: These are the classic bigleaf hydrangeas that produce either “mophead” or “lacecap” flowers in either pink or blue (or a purplish blend), depending on the soil’s pH.

• The plants produce flower buds during the summer for the following season. Pruning in autumn or spring would remove these buds and result in diminished or nonexistent blooming. Instead, prune in late summer, as soon as the flowers fade, but never after September.

• Hydrangea arborescens: Cut these so-called “smooth” hydrangeas to the ground in late winter/ early spring.

• Hydrangea paniculata: Also known as “PeeGee,” this species’ flowers can be removed, and its previous year’s growth thinned or cut back in late winter/early spring.

• Hydrangea quercifolia: You likely know these as “oakleaf” hydrangeas. Remove dead wood at the base of the plant in early spring.

• Hydrangea anomala petiolaris (climbing hydrangea): Unruly vines can be shortened in summer. Otherwise, pruning is seldom necessary.

So the answer to all who are asking — regardless of the species you’re growing — is NOT NOW!

Here’s an in-depth look at how to care for each type throughout the year, along with photos to help you identify which you’re growing.