Show Notes of Gardening the Hudson Valley Podcast Ep. 016 (April 15, 2015)
One of the first tasks to undertake at his time of year iis pruning. Most trees and shrubs benefit from annual pruning. It keep them in shape, gets rid of dead and diseased wood and encourages new growth. The trick is in know when to prune what.
But not all trees and shrubs should be pruned early, especially some of the flowering ones.
The really early spring bloomers set their flower buds the prior fall. Pruning them early in the spring would mean losing some flowers and is one of the most common answers to “Why don’t my plants bloom?. But it’s rarely fatal. Pruning at the wrong time of year may result in less flowers and fruits, but it usually won’t harm the plant in the long run.
Others will start setting new buds as soon as the old buds have fallen. These will need to be pruned shortly after flowering, or you risk pruning off the new buds with the old. And still other plants need to be continually pruned and deadheaded, to remain vigorous and in flower, but we won’t focus on them today.
There are no hard and fast rules, but trees and shrubs that prefer to be pruned while dormant and that you should already have pruned or get to ASAP include:
Trees and Shrubs to Prune in Early Spring, While Dormant
Bradford Pear (Pyrus calleryana)
Butterfly Bush (Buddleia Davidii)
Crape Myrtle (Lagerstroemia indica)
Flowering Dogwood (Cornus florida)
Flowering Plum (Prunus blireana)
Glossy Abelia (Abelia x grandiflora)
Golden Rain Tree (Koelreuteria paniculata)
Honeysuckle (Lonicera fragrantissiam)
Hydrangea, Peegee (Hydrangea paniculata Grandiflora)
Potentilla (Potentilla fruticosa)
Redbud (Cercis canadensis)
Spirea (except Bridal Wreath) (Spirea japonica)
Wisteria (Wistera species)
Trees and Shrubs to Prune in Late Spring/Summer, After Bloom
And some to hold off on, until they’ve finished blooming, include:
Azalea (Rhododendron species)
Beautybush (Kolkwitzia amabilis)
Bridal Wreath Spirea (Spirea x vanhouttei)
Flowering Crabapple (Malus species and cultivars)
Forsythia (forsythia x intermedia)
Hawthorn (Crataegus species and cultivars)
Hydrangea, Bigleaf (Hydrangea macrophylla)
Lilac (Syringa vulgaris)
Magnolia (Magnolia species and cultivars)
Mockorange (Philadelphus coronarius)
Mountain Laurel (Kalmia latifolia)
Rhododendron (Rhododendron species)
Serviceberry (Amelanchier x grandiflora)
Slender Deutzia (deutzia gracilis)
Weigela (Weigela florida)
Thank goodness most only need pruning once a year.
Now that that’s done, don’t forget the upcoming gardening classes:
❧ Saturday, April 18th, the Ulster County Master Gardeners will present their hugely popular Garden Day on at SUNY Ulster, with a keynote by hugely popular Margaret Roach.
❧ Saturday, May 2nd, the Hudson Valley Garden Fair will take place at Montgomery Place, in Red Hook, in Dutchess County.
❧ Saturday, May 17th, the Albany Master Gardeners will host their Garden Day.
I’ll have links to them all on the website.
That’s all for today. I thank you so much for listening today and I hope you will join me here again next week and on the web site at www.gardeningthehudsonvalley.com, for more gardening tips from the most beautiful place on earth.