St Clare Heirloom Seeds - Heirloom and Open-Pollinated Garden Vegetable Garden Seeds
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St. Clare Heirloom Seeds
Specializing in Non-GMO, Non-Hybrid, Non-Treated Heirloom and
Open Pollinated Vegetable, Flower, and Herb Garden Seeds
St. Clare Heirloom Seeds - Heirloom Open Pollinated Vegetable Garden Seeds.
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Products > Worm Castings

Our Worm Castings are Organic and Lab Tested 99% Pure!


Worm castings are the most nutrient rich fertilizer known to man, stimulating plant growth more than any other natural product on the market. They are 99% pure, natural, and organic, making earthworm castings one of the most highly sought after organic fertilizers today, as more people seek to grow organic and healthy plants in their gardens. Earthworms are tiny miracle workers, breaking up organic matter and converting it into useful nutrients for your soil. Worm castings are one of the most organic soil enrichments  available and are 100% natural, easy to use and safe to handle. In soil, worm castings retain water and release nutrients in a form that is easily used by garden plants. Worm castings are the original natural fertilizer put in place by the Creator since the beginning of time, discovered by man to be extremely beneficial in the plant and gardening world. The pH is neutral and therefore suitable for most types of vegetable plants from asparagus to zucchini.

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Worm Castings - 12lb

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Organic Earthworm Castings - 12 lb box - approx. 2 gallons

Worm Castings - 2 lb

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Organic Earthworm Castings - 2 lb bag

Worm Castings - 24lbs

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Organic Earthworm Castings - 24 lb box - approx. 4 gallons

Worm Castings - Free Sample

Organic Earthworm Castings - Free Sample


We thank you for visiting our site, and hope you will be pleased with your purchase. We strive to bring you the highest quality heirloom and open-pollinated garden vegetable seeds, non-hybrid, non-genetically modified (non-GMO), and completely untreated with unhealthy chemicals. That is our pledge to you our valued customer, we will never knowingly buy or sell genetically modified (GMO) or hybrid seeds. We work very hard to ensure that you can have confidence knowing that the seeds your heirloom open-pollinated plants create will give you the same heirloom open-pollinated vegetable variety next season (when given proper isolation from cross-pollination of course!), and that they will be pure, healthy vegetable garden seeds! Happy Gardening!

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