$3.99

Enjoy growing your biggest and most flavorful tomatoes ever. This soil test kit is specially designed for tomatoes. It allows you to test pH, Nitrogen, Phosphorus and Potash in your soil. The pH level determines how much nutrient your tomato plant can absorb. The NPK level tells you how much plant food and supplements to use. This means no more guessing and over or under applying fertilizer.

Easy to use. Each kit includes 4 tests, 4 coded test tubes, a color comparison chart, and directions.