Best time of the year to fertilize flowering shrubs? As well as Epson Salt

Asked November 28, 2018, 10:37 PM EST

Best time of the year to fertilize flowering shrubs? As well as Epson Salt

Douglas County Oregon trees and shrubs

1 Response

"Flowering shrubs" is much too broad an identification of what you have in your garden for us to give you one answer that will fit all. Normally, you want to "reward" a late spring blooming shrub like rhododendron by giving it some fertilizer (balanced) after it has bloomed. Then, again in the next year's early spring, after the danger of frost, you may want to give it a boost again. But other shrubs, such as winter-flowering Daphne odorata would have a bit different schedule. You would not want to be encouraging new growth on a shrub in winter. Perhaps you could equip yourself with a good reference book such as Sunset's Western Garden Book. Then you can look up each shrub individually and learn what its needs are. As for epsom salts--what evidence do you have that your plants need magnesium (which is the usual element of epsom salts utilized by some gardeners to "crisp up" fruits such as melons)? We encourage gardeners to know what is really in their soil rather than loading it with various substances it may not need.if we can be of further help, let us know what specific plants you have and we can help you treat them correctly. Thank you for using Ask an Expert.