Fertilizing Spinach in Terrace Garden

Fertilize lightly every 2 to 3 weeks with balanced fertilizer for spinach

If your spinach plants are growing slowly, you may want to add more nitrogen-based fertilizer.

Fertilize with compost tea or fish emulsion when the plants have four true leaves

Spinach likes organic matter such as well-rotted manure, alfalfa meal, soybean meal, cottonseed meal, and blood meal.

Add the fertilizer according to label recommendations and water thoroughly.

https://www.youtube.com/watch?v=4ynpB8-4MkQ