Soil Additive for you Bonsai Tree - 2 lbs. (1 Qt.) • Lava Rock is a naturally occurring volcanic cinder that has a porous structure.
• Makes your soil material lightweight and highly moisture retentive.
• Incorporate into your bonsai soil mix to increase drainage (aeration).
• It will absorb up to 40% of its weight in water.
• Small lava rock (1/4 inch) is the best "sand" component around because it is "sharp" and has very irregular surfaces.
• 2 lb. bag
• 1/4" granules
• Dust free.
