Explore our full Royal Catalog of premium sterilized grow media, liquid cultures and easy-to-use kits!

From grain spawn and A.I.O. bags to exotic, nutrient-rich substrates and essential supplies for every stage of your grow, Queen Substrates offers the highest quality materials to support vibrant growth and abundant harvests. Whether you're just starting out or mastering advanced techniques, everything you need to cultivate like royalty is right here.

All-In-One Grow Kits

No mixing, no mess—just royal results. These sealed grow bags come pre-loaded with perfectly balanced grain and substrate. Simply inject with liquid culture and watch your kingdom fruit. Ideal for beginners and seasoned cultivators alike.

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Bulk Grow Kits

Ready to scale your empire? Each kit includes a 3LB Golden Harvest grain bag, 3LB Sovereign Soil bulk substrate, and a premium liquid culture syringe. Designed for bigger grows, better control, and bountiful royal harvests.

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Royal Substrates

Cultivate like Royalty with any of our premium sterilized substrate bags. Sealed, hydrated, and fortified for vigorous colonization and bountiful fruiting!

Liquid Culture Library

Cultivate like Royalty with any of our gourmet liquid cultures. Professionally prepared, quality-checked, and suspended in sterile solution for fast, vigorous colonization and reliable results every time!

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The Jester's Court

Imperfect but mighty! Jester Bags are discounted, fully sterile spawn or substrate bags with minor cosmetic flaws or light weight — perfect for budget growers, experimental runs, or research projects!