Rock Wool, 50 Pieces Hydroponic Culture Cubes 1 x 1 x 1 in, Soilless Culture Cubes for Cuttings, Planting, Indoor Gardening and Above Ground Crops

Kit Content: different sizes to meet all planting needs: large rock wool blocks (4 to 4 to 4 cm) and small blocks (2.5 to 2.2 in). These blocks are suitable for growing seedlings, cuttings and cloning, and are ideal for modern hydroponic systems and greenhouse cultivation. Natural Material: made from basalt by an inorganic fiber process, the rock wool substrate provides a soft and even texture, free of soil and impurities. It has excellent water absorption, optimal aeration and stable pH, creating ideal conditions for seed germination. High water absorption: the special porous structure of the rock wool blocks allows rapid absorption of the nutrient solution while maintaining a constant supply of oxygen. This ensures an optimal balance between strong water retention and good aeration, reducing the risk of root rot and promoting germination and root development. Easy to Use: with the pre-cut cube shape, these planting blocks are ready to use. Simply soak them in water, place the seeds or young plants in them, then plant them in the ground once germinated. Ideal for beginner gardeners and school projects. Versatile Use: rock wool blocks fit all pots. Maximize space to grow tomatoes, herbs, strawberries, cucumbers and other flowering vegetables under greenhouse. You can also use them in your garden or as indoor potted plants.