Colorado Lava Rock Granules Bonsai Tree For Sale Soil Additive – 20 lbs. (10 Qts.)

Lava Stone is a naturally-occurring volcanic cinder that’s a porous structure that makes the stuff lightweight and exceptionally moisture retentive. Integrate into your bonsai soil mixture to improve drain (aeration). It’s going to consume up to 40% of its weight in water. Little lava stone (1/4 inch) is the greatest “sand” part around because it’s “sharp” and has quite uneven surfaces.