Best Fertilizer for Evergreen Shrubs

Anonymous added on May 17, 2011 | Answered

What is the BEST fertilizer to use on the following evergreen shrubs and trees (We're in SANDY soil in Blythewood, SC)? Shrubs: lorapetalum, privets, abelias, knock out roses. Trees: crepe myrtle, loquats and magnolia I've used osmocote slow release but don't see much improvement.  Is Black Cow Compost better or worse than Mushroom Compost?

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Certified GKH Gardening Expert
Answered on May 18, 2011

For shrubs and trees that are grown for foliage, use a nitrogen rich fertilizer. For shrubs and trees that are grown for flowers, use a phosphorus heavy fertilizer.

It will depend on a lot of things. Mushroom compost is actually cow manure compost, just that it was used to grow mushrooms in. Which is better will depend on the mix that was packaged by the packagers. Look on the bags for the nitrogen amount or the N-P-K. Whichever has the higher numbers is the better one.

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