Grodan Delta 15cm x 15cm x 15cm Rockwool Blocks - Propagation & Seed Starting Basil It needs good drainage or

It needs good drainage or it will rot

Yellow Cherry Plum

It is a popular specimen for bonsai

and on the outside of the petals to close them

Its stems are strong and the plants are very productive

Grodan Delta 15cm x 15cm x 15cm Rockwool Blocks - Propagation & Seed Starting Basil It needs good drainage orThe rockwool blocks are designed for starting seeds clones and growing from start to finish. These are one of the biggest rockwool blocks on the market bought to you by Grodan, the world leaders in rockwool technology.. Rockwool Block Size : 15cm x 15cm x 15cm. About rockwool plugs. Designed to facilitate the propagation of plants. Holds the optimum amount of water and oxygen. The plug is designed for single use and is not recommended to be used