Instant answers on plants, soil, pruning, weeds & more.

Help! How Much Should I Feed My Plant?

What's This Plant NPK Feeding Calculator
Use the numbers on the label, e.g. 4-6-3.
Approximate guidance only. Always watch your plants and follow the product label. ppm values are estimates and can vary with water quality, media, and fertilizer type.
Multi-fertilizer mixer (optional)
Mix two fertilizers or amendments and see the combined NPK of the blend. Amounts can be grams (dry) or ml (liquid) as long as you’re consistent between A and B.
Fertilizer A
Fertilizer B
soil