What should I put on rhurbarb now to feed it for next year. I cannot get old horse manure. I was wondering if “sea mun gus” (fish-seaweed-humic acid. would suffice.
Rhubarb can be fed in winter or early spring, using any sort of well-rooted organic material, such as compost, manure or even lawn mowings. The bulky organic material helps to keep the soil moist in early summer.
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