Developed from our organic mushroom growing process, this compost is rich in organic matter — helping nourish and protect your soil through winter and support vibrant growth in spring.
Supports Winter Soil Protection
Adds valuable organic matter that insulates roots, supports soil structure, and helps maintain moisture during cold, dry months.
Builds Stronger Soil for a Better Spring Garden
Breaks down over winter to enrich the soil — helping your garden wake healthy, balanced, and ready to grow when spring returns.
Naturally Pasteurized & Weed-Free
Our compost is heat-treated during the mushroom growing process, eliminating weed seeds and minimizing pathogens — giving you a clean, safe soil amendment.
Protect Your Garden This Winter
As temperatures drop, give your garden a protective layer that supports soil health all winter long.
Mulching with River Valley Mushroom Compost helps retain moisture, reduce erosion, and keep your soil active beneath the snow — so your plants can wake up stronger in the spring.
Whether you’re tucking in perennials, covering raised beds, or planting garlic bulbs for a spring harvest, our compost helps provide a stable, insulated environment through the harshest months.
Bagged vs. Bulk: Which is better for you?
Bagged Compost
Conveniently packaged for home gardeners and small-scale projects. Each bag contains 1.1 cubic feet of compost, ideal for:
Flower beds & raised beds
Vegetable gardens
Container plants & seasonal refreshes
Bulk Compost
The best value for larger garden areas and landscaping needs. Available by the yard for:
Full-garden coverage
New beds & lawn installation
Farms, community gardens & commercial landscapes
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