New England Harvester Tool

Homemade Fertilizer
Calculator

Tell us what's wrong with your plant and we'll give you a recipe you can make from ingredients you already have.

1 What are you growing?
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Not sure what's deficient? Start with a soil test.
A soil test takes the guesswork out — it tells you exactly what's missing and in what quantity before you start amending. Two good options:
🏫 UNH Extension Lab — $20 Mail-In Test Most accurate. Results in ~1 week. Best for New England soils. 📦 Instant Soil Test Kit on Amazon Results in minutes. Great for a quick baseline before mail-in.
2 What symptoms are you seeing?
A note from Mike These are homemade remedies using common kitchen and garden ingredients. They work best for mild to moderate deficiencies. For severe deficiencies or if symptoms persist after two weeks, a proper soil test will tell you exactly what's going on. The UNH Extension lab offers a basic test for around $20 — worth every cent before you start amending heavily. Amazon affiliate links on this page support the channel at no extra cost to you.