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Parboiled Rice Hulls — Aeration Amendment for Vermi Systems, Gardening Beds & Indoor Growing Mixes

Parboiled Rice Hulls are the outer shells of rice grains that have been steam-treated for cleanliness and consistency. These lightweight hulls bring excellent aeration and structure to soils, substrates, and vermi systems, helping to prevent compaction and keep everything breathing. They also add natural silicates to your mix, which supports strong stems and resilient plant growth.

Gardening Use

Rice hulls make a great long-lasting amendment for gardening beds and indoor growing mixes. They improve drainage, oxygen flow, and moisture balance, helping roots grow deeper and healthier. Mix in 10–50% rice hulls with your soil or potting blend to boost structure and create a more balanced, airy environment for plants.

Vermicomposting Use

In worm bins, parboiled rice hulls improve aeration and drainage, preventing compaction and excess moisture. They act as a bedding amendment that keeps your mix light and breathable, while adding silicates that contribute to structure and help produce high-quality worm castings. Rice hulls help maintain air pockets and balanced moisture, supporting healthy microbial activity. For best results, use 10–20% in your worm bedding or compost mix, combined with compost, cardboard, or other organic matter.

Parboiled Rice Hulls are a simple, effective way to improve aeration and structure in your potting mix or worm bedding, while adding a steady source of natural silicates for thriving plants and vermi systems.