Quote:
Originally Posted by Itoero
Can I use bone meal and blood meal (=organic nitrogen)?
And don't they need potassium?
For my garlic, I will add a mix of compost, volcanic rockdust and organic fertilizer (dried kelp, nettle en alffalfa) with npk 2-2-2.
Can I use that for the onions?
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Volcanic rockdust has no fertilizer content that will be released on a time scale relevant to plants or your lifetime. Fish emulsion is a better source of acidic organic nitrogen.
But if you want to stick with what you have, then amend the soil with the compost and organic fertilizer and afterwards provide monthly supplements of bone meal and blood meal.