Blue Spruce
Q.

Blue Spruce Trees

Zone Kempton, Indiana 46049 | [email protected] added on January 8, 2018 | Answered

In your article, you suggest applying 12-12-1 fertilizer at various times! You do not say how much, and you don't give any sources for 12-12-1 fertilizer.

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MichiganDot
Answered on January 9, 2018

Look for a slow-release fertilizer labeled for pines or evergreens. Most soils have sufficient phosphorus although you need a soil test to confirm this. You are mostly looking for a nitrogen source and a bit of potassium. Several inches of rich compost would do. Here is an article from Univ of Minn Extension Service: https://www.extension.umn.edu/garden/yard-garden/trees-shrubs/fertilizing-evergreens-conifers/

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