In fact, they can produce strong blooms for years without ever cutting back at all. Paniculatas dependably bloom on new growth every year in mid-summer, and the show is spectacular. These hydrangeas include two forms: the mophead and the lacecap types. With this variety of hydrangeas you will see blooms on new wood. Panicle hydrangeas are unique in that they are the only type of hydrangeas that can be pruned into a tree-form. Nurseries prune them into single trunk trees when they are very young. Bigleaf hydrangea, H. macrophylla. Once you apply these basic rules, depending on the particular type of tree or bush you’re pruning, there may be a few fine tune rules to apply… such as with apple trees, cutting off the upward branches or suckers, or like with these hydrangeas, make the actual cut on the branch just after the first bud, (I’ll explain that better a little further down) This is usually done by the grower or nursery, rather than by the home gardener – you can buy tree-form shrubs from the nursery. If you prune some types of hydrangeas in … Gardeners should prune hydrangeas annually for winter, but pruning the wrong way could cause hydrangea plants not to flower. In my zone 5 gardens, when my bigleaf hydrangeas have suffered winterkill, my oakleaf and climbing hydrangeas have flowered profusely with no protection. Fall Hydrangea Care 101 To Prune Or Not To Prune. The only type hydrangea that can be made into a tree is Hydrangea paniculata. It has attractive, lustrous leaves and large blue, pink, red, or purple flowers. Pruning only needs to occur to keep a shrub well shaped, or after many years of … Planting. The Limelight hydrangea blooms on new growth, so it should be pruned in late winter, before new growth begins. The process of training a panicle hydrangea into a tree starts when the shrub is young. Planting the hydrangea tree … Although the florets look similar to those of bigleaf hydrangeas, Limelight has teardrop-shaped bloom clusters and blooming starts later in the summer. Blooming bigleaf hydrangea Photo: Pat Cox. What this all comes down to is the one kind of hydrangea that needs your intervention: bigleaf hydrangea (macrophylla). This is the most commonly grown hydrangea in Maryland. These are particularly rewarding hydrangeas to grow because they will try to bloom on an annual basis regardless of how you treat them. When pruning hydrangeas, knowing which type of hydrangea you have is key to knowing what time of year to prune it. Tree of Heaven and Mountain (hydrangea serrata) It's got a similar look to Mophead but is a smaller shrub with narrower, pointed leaves. First, it’s important to realize hydrangeas do not need pruning every year. Types of hydrangeas and tips on pruning. Hydrangeas offer their blossoms all summer long, in hues of white, pink or blue. Tree hydrangea (Hydrangea paniculata) is a quick-growing upright shrub with a coarse texture.Unlike more bushy hydrangeas, these plants provide later summer blossoms when few other bushes are in bloom. I call it the troublemaker. They are popular landscape plants for massing or grouping in mixed shrub borders or woodland gardens.They also work well as specimen plants or in hedges. Make an A-Frame for Hydrangea Protection 1. How to prune hydrangea paniculata.