I planted these seeds about 2 weeks ago. How soon can I fertilize them?
Thanks in advance.
this one is a seedling from May this year. no fertilizer.
There is little point in fertilizing seedlings until they have their first true leaves (nutrition comes from the endosperm until about the time first leaves form); after that, you can fertilize as you would a mature plant - as long as you are careful about not over-fertilizing.
Thank you very much!