{"product_id":"coast-of-maine-organic-sprout-island-seed-starter-mix-16-qt-2-pack-mycorrhizae-worm-castings","title":"Coast of Maine Organic Sprout Island Seed Starter Mix — 16 Qt (2-pack), Mycorrhizae \u0026 Worm Castings","description":"\u003cstrong\u003eCoast of Maine Sprout Island Blend is an organic, ready-to-use seed starter mix designed to speed germination and support healthy root development for seedlings and cuttings.\u003c\/strong\u003e\n\n\u003cp\u003eThis lightweight, carefully balanced mix combines sphagnum peat, composted manure, worm castings, kelp meal, perlite, and beneficial mycorrhizae to create an environment that encourages strong roots, steady growth, and reliable transplant success. OMRI-listed and free of synthetic chemicals, it comes in two 16-quart bags so you can fill trays, cell packs, or pots and start seeds or propagate cuttings right away.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this mix help seeds sprout faster?\u003c\/h3\u003e\n\u003cp\u003eSprout Island Blend offers a consistent texture and moisture-holding profile that keeps seed zones evenly damp without waterlogging. The organic nutrients and kelp provide gentle nourishment, while high porosity helps air reach tiny developing roots.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFine, uniform particle size for even seed contact\u003c\/li\u003e\n  \u003cli\u003ePerlite and compost to improve drainage and aeration\u003c\/li\u003e\n  \u003cli\u003eWorm castings and kelp for starter nutrients and growth stimulants\u003c\/li\u003e\n  \u003cli\u003eOMRI-listed ingredients safe for sensitive seedlings\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this mix support root cuttings and transplanting?\u003c\/h3\u003e\n\u003cp\u003eYes—the blend is formulated to encourage rapid root initiation and reduce transplant shock. Mycorrhizae enhance root-soil interaction so cuttings establish more efficiently and transplanted seedlings adapt quickly to garden soil.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMycorrhizal inoculant to improve nutrient uptake\u003c\/li\u003e\n  \u003cli\u003eComposted manure and organic matter for steady nutrient release\u003c\/li\u003e\n  \u003cli\u003eGood drainage to prevent rot on vulnerable cuttings\u003c\/li\u003e\n  \u003cli\u003eSuitable for trays, cell packs, and small pots\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I use this seed starter for best results?\u003c\/h3\u003e\n\u003cp\u003eFill clean trays or pots loosely with the mix, firm lightly, moisten evenly, and sow seeds at the recommended depth. Keep trays in a warm, sheltered spot or under grow lights and maintain consistent moisture until seedlings develop true leaves.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePre-moisten before sowing to avoid dry pockets\u003c\/li\u003e\n  \u003cli\u003eUse bottom-watering or misting to protect delicate seeds\u003c\/li\u003e\n  \u003cli\u003eTransplant when roots fill the cell or first true leaves appear\u003c\/li\u003e\n  \u003cli\u003eUse with gentle fertilization after seedlings are established\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat makes this blend different from potting soil?\u003c\/h3\u003e\n\u003cp\u003eSeed starters prioritize light weight, fine texture, and controlled nutrients rather than the long-term water and nutrient retention of potting soils. Sprout Island Blend is tailored for early growth stages, minimizing compaction and disease risk while promoting quick root development.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFiner particles than typical potting mixes for better seed contact\u003c\/li\u003e\n  \u003cli\u003eLower nutrient load to prevent fertilizer burn on seedlings\u003c\/li\u003e\n  \u003cli\u003eHigher porosity to promote oxygen around developing roots\u003c\/li\u003e\n  \u003cli\u003eFormulated specifically for germination and cuttings, not long-term container culture\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Gardeners, hobby growers, nursery professionals, classroom projects, and indoor propagators who want an organic, reliable seed-starting medium. It’s ideal if you need a clean, easy-to-use mix that reduces transplant problems and supports vigorous early root systems without synthetic additives.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How many bags are included per order?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: You receive two 16-quart bags per order, enough to fill multiple trays or cell packs.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is this product safe for indoor seedlings?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It is OMRI-listed and free of synthetic chemicals, suitable for indoor seed starting and cuttings.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Coast of Maine","offers":[{"title":"Default Title","offer_id":56826856014164,"sku":"B0992RG5CD","price":115.69,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1063\/2652\/4244\/files\/coast-of-maine-front-packaging-sprout-island-blend.jpg?v=1786993185","url":"https:\/\/gardenluxe.co.uk\/products\/coast-of-maine-organic-sprout-island-seed-starter-mix-16-qt-2-pack-mycorrhizae-worm-castings","provider":"Gardenluxe Uk","version":"1.0","type":"link"}