Question: Could you please tell me the best fertilizer for Colorado Blue Spruce trees? Should I just use Miracle Grow or Hollytone (acid loving) fertilizer?
Answer: Your Colorado Blue Spruce should be fed in March with a slow release 10-10-10. Using an acidified fertilizer won't really change the pH of your soil to any great degree so I wouldn't specifically purchase it for the tree. If you have it on hand, go ahead and use it. Otherwise a good all purpose garden fertilizer will be just fine.
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