Best Organic Fertilizer Options for Houseplants
The best organic houseplant fertilizers are worm castings (top-dress 1/4 inch), fish emulsion (5-1-1 diluted, though it smells), compost tea, and Espoma Indoor Organic (2-2-2). Worm castings are odor-free and impossible to over-apply, the safest option. For a liquid organic, Neptune's Harvest Fish & Seaweed (2-3-1) provides gentle nutrition. Avoid bone meal and blood meal indoors due to odor and potential for attracting pests.
What You Need to Know
The best organic houseplant fertilizers are worm castings (top-dress 1/4 inch), fish emulsion (5-1-1 diluted, though it smells), compost tea, and Espoma Indoor Organic (2-2-2). Worm castings are odor-free and impossible to over-apply, the safest option. For a liquid organic, Neptune's Harvest Fish & Seaweed (2-3-1) provides gentle nutrition
Avoid bone meal and blood meal indoors due to odor and potential for attracting pests.
For personalized recommendations based on your specific garden size and fertilizer, use our fertilizer calculator.
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