Haydite makes an excellent addition to bonsai soil substrate as it is a unique, lightweight aggregate prepared by expanding select minerals (such as shale, clay and slate) in a rotary kiln at temperatures over 2200°F.
Features of Haydite:
Provides excellent aeration which provides oxygen to the roots of the bonsai tree
Promotes good drainage to prevent root rot
Substrate particles are approximately 1/4-1/2" with some variation
Purchase one bag of haydite for $8.99 or purchase three bags for $24.99 and save $1 per bag.
1.5lbs of haydite is approximately 4 cups in volume