“I am looking for a well-draining mix for my seeds. In particular for delphinium, foxglove, and hollyhock seeds. I want to use your compost mix with your seedling mix. Do you think it is too much?” Question from Deb of Lynbrook, New York.
Answer: Instead of compost, increase the drainage of your seed-starting mix with perlite. I would mix two parts Black Gold Seedling Mix with one part Black Gold Perlite, which gives potting mix superior drainage. Both products are also OMRI Listed for organic gardening. This mix should give you the perfectly well-drained seed starting mix you want.
Happy seed starting,
Black Gold Horticulturist