Directions for Using Earthworm Castings
Potted Plants and Seeds/Seed Flats-New – Potting mix-use 1 part earthworm castings to 3 parts soil. Or can use up to 100% castings with good results but lower concentrations are very effective
Potted Plants – Add 1-2 inches of Earthworm castings to top of soil. Mix in taking care not to damage shallow roots – water – repeat every 2-3 months.
Vegetables and Annual Flowers – Line furrows and plant holes with 2” of earthworm castings. Before placing seeds and plants then cover seeds and plant roots with soil. Side dress during growing seasons at a rate of 1/2 cup per plant or 1 cup per linear foot of row once every 2 months.
Roses, Trees, Shrubs and Berries – When planting mix 1 part earthworm castings to 3 parts soil. Surround newly dug hole with mixture. Spread roots over a mound of the mix in the hole and cover.
Roses – Established – Mix 4 cups of earthworm castings into soil 2-3 inches below the surface for each plant.
Lawns – New – Apply 10 lbs. per 100 sq. ft. into the topsoil. Mix in grass seed and water well.
Lawns – Established – Top dress 10 lbs. per 100 sq. ft.
Trees (fruit, citrus, nut, ornamental) – Apply by topdressing from the trunk to the edge of the drip line. With established trees top dress with 5 lb. castings per 1-inch diameter of the tree two to three times a year. It is important to get the worm castings applied during the spring blossoming period.
Compost Piles – Spread a thin layer of earthworm castings between each new layer of material to be composted