Fertilizer and compost replace what hungry plants use up. A little, at the right time, is plenty.
Words to know
Fertilizer numbers (like 10-10-10):
The amounts of nitrogen, phosphorus and potassium, always in that order. Nitrogen grows leaves; phosphorus helps roots and flowers; potassium helps fruit and overall health. Equal numbers mean balanced.
Compost:
Rotted plant matter. It feeds the soil slowly and gently.
Side-dress:
Scatter fertilizer or compost in a ring around a plant during the season.
How to do it
1Use the amount on the package — more isn't better. Too much gives big leafy plants with little fruit, and can burn roots.
2Sprinkle it in a ring a few inches out from the stem, not against it.
3Scratch it lightly into the top inch of soil.
4Water it in.
Good to know
Liquid feeds (like fish or seaweed) mix with water and work fast; granules release over several weeks.
Carrots, beans, peas and most herbs need little or no extra feeding.
Based on standard guidance from U.S. university extension services, including Cornell, the University of Minnesota and Oregon State.