Japanese trees and plants gardening volcanic soil, kanuma soil, akadama soil and kiry sand.

For planting orchids, rhodea, alpine grasses, etc. 
Use a 30% mixture for planting flowering plants and foliage plants. 
Mix with potting compost and the soil will not harden and drainage will be improved.

Akadama Soil:

Akadama Soil is a naturally occurring, granular clay-like mineral that is used as soil for bonsai trees and other container-grown plants. It is surface mined, immediately sifted and bagged, and supplied in various grades: the deeper mined grade being somewhat harder and more useful in horticulture than the more shallow mined grades. Akadama Soil may also act as one component of growing medium when combined with other elements such as sand, composted bark, peat, or crushed lava. Akadama Soil’s color darkens when moist which can help the grower determine when to water a tree.

Order information to customers:

Kanuma Soil Applications:

Soil Mixture Ratio Chart for Gardening and Horticulture: