3 litre box of horticultural Sponge Rock
The same composition as perlite but in larger chunks, Sponge Rock is a naturally occurring, mixed glassy silicate of volcanic origin which 'pops' when furnaced. Its unique internal structure consists of numerous tiny closed air cells surrounded by a large exterior irregular surface. Sponge Rock is
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Essential medium component
Well packaged and shipping was quick. Be careful when opening as the sponge rock can be a bit crumbly with shipping. It is in excellent shape and my orchids will be happy.
M
mins · June 12, 2026
Excellent comme toujours!
Excellents produits que je commande régulièrement.