Give your soil the minerals it has been missing with Meme's Worms Basalt Rock Flour, a finely ground volcanic rock dust packed with naturally occurring trace minerals that help support healthy soil biology, stronger root systems, and long-term plant vitality.
Unlike synthetic fertilizers that can wash away after watering, basalt rock flour provides a slow-release source of essential minerals that become available over time through natural biological activity. It works alongside beneficial bacteria, fungi, earthworms, and other soil organisms to build healthier, more productive soil.
Whether you're growing vegetables, flowers, fruit trees, pasture, or houseplants, basalt rock flour is an excellent addition to compost, worm castings, potting mixes, raised beds, and garden soils.
Why Gardeners and Growers Use Basalt Rock Flour
✔ Naturally occurring volcanic mineral source
✔ Contains dozens of trace minerals
✔ Helps support beneficial soil biology
✔ Improves long-term soil mineral balance
✔ Ideal for composting and vermicomposting systems
✔ Works well with worm castings, biochar, and organic fertilizers
✔ Slow-release mineral source that lasts for years
Great for
- Vegetable gardens
- Raised beds
- Fruit trees and berry bushes
- Flower gardens
- Lawns and pasture
- Compost piles
- Worm bins and vermicomposting systems
- Living soil and no-till gardens
- Container gardens and houseplants
How Basalt Rock Flour Supports Soil Health
Healthy soil is more than just NPK. Plants also require a wide range of trace minerals to support growth, root development, and overall plant function. Basalt rock flour helps replenish many of the minerals that may be depleted through years of cultivation and harvesting.
When combined with organic matter such as compost, worm castings, and biochar, basalt creates an environment that encourages beneficial microbial activity and helps build resilient soil over time.
Application Rates
Gardens & Raised Beds
Apply 5–10 pounds per 100 square feet and work into the top few inches of soil.
Potting Mixes
Add 1–2 cups per cubic foot of potting mix.
Compost & Worm Castings
Mix 1–2 cups per cubic foot of material during processing.
Trees & Shrubs
Apply 1–5 pounds around the drip line and water thoroughly.
Why Buy from Meme's Worms?
At Meme's Worms, we don't just sell soil products—we use them. As one of America's fastest-growing woman-owned worm farms, we work with compost, castings, soil biology, and mineral amendments every day. We carefully select products that complement healthy soil ecosystems and support sustainable growing practices.
Whether you're building living soil, improving a garden, or enhancing your vermicomposting system, our basalt rock flour is chosen to work hand-in-hand with beneficial microbes, earthworms, and organic growing methods.
Product Specifications
- Product Type: Basalt Rock Flour
- Source: Natural Volcanic Basalt
- Form: Fine Powder / Rock Dust
- Use: Soil Amendment & Mineral Supplement
- Suitable For: Organic Gardening, Composting, Vermicomposting, Raised Beds, Containers, Lawns, and Agricultural Use
Build healthier soil naturally with Meme's Worms Basalt Rock Flour and give your plants the mineral foundation they need to thrive.
Prices: Plus shipping. We need to figure out shipping on these.
