US Patent 7234272 Raising pots for vegetable seedlings

Raising pots for vegetable seedlings are produced by molding a mixture including a boiled fiber material prepared by boiling bamboo fiber with fiber of a grass plant such as reed, an auxiliary material comprising at least one member selected from among a carbonized vegetable material prepared by carbonizing a tree-free material, a calcium-based waste powder such as bone metal and a chicken manure powder and a small amount of urea optionally together with a silicon dioxide powder.