Dolores from Waupaca Wisconsin writes
I just planted Colorado blue spruce and I was going to buy a separate fertilizer. what would you recommend and how DO I apply it?
The Bonide Aluminum Sulfate is not a fertilizer at all but a product to help balance out the PH level in soils for plants that need a more acidic level to best grow. If you are looking for a general fertilizer for your trees then you could apply something like the Bayer Advanced 12 Month Tree & Shrub Protect and Feed.
Answer last updated on: 06/02/2016