100 breathable rock cotton seed blocks, soilless planting blocks for gardening, ideal for indoor and outdoor use (25 x 25 x 25 mm)

Rockwool: Rockwool will not become very soft after soaking and can be cut to size to suit your planting needs in different scenarios. The rockwool cushion measures 2.5 x 2.5 x 2.5 cm, is slightly textured, and has a slit in the middle for easy insertion of root cuttings.
Marshmallow-like fibers spun from lava: These growing cubes are made from marshmallow-like fibers spun from lava.
Sterility and high-temperature treatment: After a Rigorous high-temperature treatment ensures these cubes are completely sterile, providing a safe and clean growing environment.
Lightweight and excellent porosity: These cubes have a low mass density and a light texture with excellent porosity for optimal air circulation and water absorption.
Air permeability and drainage: The cube has good air permeability, allowing for good oxygen exchange, while its high water absorption and good drainage ensure that plants receive the right amount of water.
Suitable for Variety of plants: These crop starter blocks are versatile and can be used to plant and colonize various types of plants.