{"product_id":"elmer-s-gold-worm-castings","title":"Elmer’s Gold Worm Castings","description":"\u003ch2\u003eWorm castings for houseplants and garden soil\u003c\/h2\u003e\u003cp\u003eElmer’s Gold brings the work of our family’s worm farm to your garden. Add these worm castings to your soil or potting mix for organic matter and naturally occurring plant nutrients.\u003c\/p\u003e\u003cp\u003eUse Elmer’s Gold when repotting houseplants, planting containers, or tending your garden.\u003c\/p\u003e\u003ch3\u003eChoose your size\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e4 lb:\u003c\/strong\u003e Makes about 10 gallons of finished mix at the 1:9 ratio below.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e16 lb:\u003c\/strong\u003e Makes about 39 gallons of finished mix at the 1:9 ratio below.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eFinished volumes are estimates based on 4.10 lb per gallon. Moisture and settling affect volume; use the same scoop for both ingredients when mixing.\u003c\/p\u003e\u003cp\u003eSizes are net product weight, excluding packaging. Packed simply in a compostable bag inside a cardboard shipping box, with printed product information. Shipping is calculated at checkout.\u003c\/p\u003e\u003ch3\u003eHow to use\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eMixing:\u003c\/strong\u003e Start with 1 part castings to 9 parts soil or potting mix by volume. For example, combine 1 cup of castings with 9 cups of potting mix. Blend thoroughly before planting.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eEstablished plants:\u003c\/strong\u003e Add a light top dressing around the plant, keep it away from the stem, and water it in.\u003c\/p\u003e\u003cp\u003eUse alongside a suitable soil or potting mix rather than as a stand-alone growing medium.\u003c\/p\u003e\u003ch3\u003eTesting is part of how we grow\u003c\/h3\u003e\u003cp\u003eWe use independent laboratory testing and microscope observations to understand our castings and guide our production. Testing has included nutrients, soil-health measurements, humic and hydrophobic fulvic acids, and microbial DNA.\u003c\/p\u003e\u003cp\u003eOur available reports include testing from 2025 and 2026. Results describe the samples tested; natural batches vary. \u003ca href=\"\/pages\/testing-growing-trials\"\u003eRead the reports and see our growing trial\u003c\/a\u003e.\u003c\/p\u003e\u003ch3\u003eWhat arrives at your door\u003c\/h3\u003e\u003cp\u003eSimple packaging: castings in a compostable bag, protected by a cardboard shipping box, with printed growing directions. These photos show our 4 lb and 16 lb packages with castings displayed beside them.\u003c\/p\u003e\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:16px\"\u003e\n\u003cfigure style=\"flex:1 1 220px;margin:0\"\u003e\u003cimg src=\"https:\/\/iowawormfarm.com\/cdn\/shop\/files\/elmers-gold-4-lb-packaging.jpg?v=1789764793\u0026amp;width=800\" alt=\"Elmer’s Gold 4 lb packaging: white shipping box, compostable bag, and castings displayed alongside.\" width=\"1080\" height=\"1080\" loading=\"lazy\" style=\"width:100%;height:auto\"\u003e\u003cfigcaption\u003e4 lb package\u003c\/figcaption\u003e\u003c\/figure\u003e\u003cfigure style=\"flex:1 1 220px;margin:0\"\u003e\u003cimg src=\"https:\/\/iowawormfarm.com\/cdn\/shop\/files\/elmers-gold-16-lb-packaging.jpg?v=1789764793\u0026amp;width=800\" alt=\"Elmer’s Gold 16 lb package: cardboard shipping box with castings displayed alongside.\" width=\"1080\" height=\"1080\" loading=\"lazy\" style=\"width:100%;height:auto\"\u003e\u003cfigcaption\u003e16 lb package\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\u003ch3\u003eStorage\u003c\/h3\u003e\u003cp\u003eKeep in a cool, shaded location away from extreme heat and direct sunlight.\u003c\/p\u003e\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0726\/0877\/6445\/files\/elmers-gold-growing-guide.pdf?v=1789764554\"\u003eDownload the one-page growing guide (PDF)\u003c\/a\u003e—the same directions included with your order.\u003c\/p\u003e","brand":"Iowa Worm Farm","offers":[{"title":"4 lb","offer_id":48455404126434,"sku":"sku-46054584647933","price":16.0,"currency_code":"USD","in_stock":true},{"title":"16 lb","offer_id":48455404159202,"sku":"sku-46054584680701","price":48.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0829\/6107\/2354\/files\/elmers-gold-worm-castings.jpg?v=1789783454","url":"https:\/\/prairiegardener.com\/products\/elmer-s-gold-worm-castings","provider":"Prairie Gardener Supply Co.","version":"1.0","type":"link"}