When pruning mophead hydrangeas and lacecaps in early spring:
Cut out one or two of the oldest, weakest stems at the base of the plant to encourage new growth that will have better blooms.Using secateurs, carefully remove old flowerheads just above a pair of buds.Be careful not to cut off any of the flower buds.

Do mophead hydrangeas need sun or shade?

You’ll find mophead hydrangea care easiest if you plant them in U.S. Department of Agriculture plant hardiness zones 5 through 9. In cooler zones they do well in full sun but, in regions with hotter summers, select a site with afternoon shade.

Should you prune mophead hydrangeas?

First, it’s important to know that mophead hydrangeas do not have to be pruned back – ever – unless they are very old. Removing dead stems is the only pruning that must be done for the health of the plant, and these can be removed at any time. Dead blooms can also be removed at any time.

When should I cut back my mophead?

Both mophead and lacecap hydrangeas are considered bigleaf or macrophylla hydrangeas, so they can be pruned right after flowering by cutting back the flowering shoots to the next bud.

How do you deadhead a mophead hydrangea?

The best time to deadhead is when the first set of blooms on your hydrangeas begin to turn brown and dry. Cut the stem below the flower head and just above the first set of leaves. For reblooming types, you can deadhead again when this second set begins to fade, but only through mid-August or so.

How big do mophead hydrangeas grow?

The flowers on this mophead hydrangea are bi-colored with white and either deep blue in acidic soil or magenta in more alkaline soil. It grows three feet tall and three feet wide in Zones 5-9.

How long do mophead hydrangeas bloom?

The Mophead Hydrangeas or Hortensias produce large rounded flower heads, mostly packed with showy sterile florets. Since the flowers cannot be pollinated, they will bloom on and on through summer, between 3-6 months, until fall approaches and they change color.

Do mophead hydrangeas rebloom?

They are called remontant, which means reblooming. One of the first introduced was ‘Endless Summer,’ a blue mophead variety, but there are many others now available.

What happens if you don’t prune hydrangeas?

Hydrangeas that bloom on old wood do not need pruning and are better off for it. If you leave them alone, they’ll bloom more profusely the next season. But go ahead and gently thin or deadhead. Just remember new growth may come, but that new growth will be without blooms next season.

What happens if you don’t deadhead hydrangeas?

If you simply skip deadheading hydrangeas, no harm will come to your plant. At least nothing so serious that you should stress about it. Your hydrangea may not produce as many blooms as if spent blooms would have been removed, nor the blooms will be very large. But it will still bloom, regardless.

Should I cut off Brown hydrangea blooms in spring?

While some plants bloom on new growth, others primarily set flower buds on old wood. Regardless, it is best to wait to prune all hydrangeas until spring. In the fall, hydrangeas (and all trees and shrubs) are in the process of going dormant.

Do mophead hydrangeas bloom on old wood?

The type most commonly found in the garden is the one that produces buds on “old wood”. This includes the old garden hydrangeas such as Mophead, Big Leaf, and Lacecap types (Hydrangea macrophylla) and the Oakleaf hydrangea (H. quercifolia). They all produce blooms on old wood.

What month do you prune hydrangeas?

Trimming should be done immediately after flowering stops in summer, but no later than August 1. Do not prune in fall, winter, or spring or you could be cutting off new buds. Tip-pruning the branches as leaves emerge in spring can encourage multiple, smaller flower heads rather than fewer larger flower heads.

Should hydrangeas be cut back for winter?

In late winter or early spring, these shrubs can be cut all the way back to the ground. Smooth hydrangeas will produce much larger blooms if pruned hard like this each year, but many gardeners opt for smaller blooms on sturdier stems.