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Old March 7, 2018   #7
Cole_Robbie
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Join Date: Jun 2012
Location: Illinois, zone 6
Posts: 8,407
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I've been mixing a tiny bit of Schultz pelleted time-release in my seed-starting mix. The stuff is cheap, and works almost as well as Osmocote. Even with a seed touching a pellet of the fertilizer, they seem to grow fine without burning. The nutrients come out of the time-release stuff slowly enough that it won't burn plants.

Worm castings are another proven and effective fertilizer, and a component of the more expensive seed-starting mixes. They too tend to not burn plants, even though a tiny bit goes a long way.
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