VIVOSUN 1.6-inch Rockwool Cubes, 112 Plugs for Seed Starting & Propagation

Premium propagation media for healthy root development

VIVOSUN 1.6-inch Rockwool Cubes offer a clean, inert home for seeds and cuttings, designed to support vigorous propagation without soil. The rockwool is crafted from natural minerals—60% basalt, 20% coke, 20% limestone with a trace of iron slag—melted at high temperatures and spun into fine fibers, then compressed into durable blocks. This process yields a light, airy material that holds its shape while remaining easy to handle in trays and propagation setups.

The standout feature is porosity. With approximately 95% air-filled space, the cubes invite ample oxygen to reach developing roots, which can help foster strong, healthy root systems as plants begin their journey. The material is inorganic and sterile, which helps minimize the presence of potentially harmful fungi and pests, giving you a lower-maintenance starting point for your crops.

Hydration is another strength of these plugs. The rockwool maintains moisture effectively, helping seedlings receive steady hydration and nutrient access during early growth. The cubes are lightweight and fluffy, making them simple to manage, cut to size, and position precisely where you want them. Each cube includes a hole ready for seeds or cuttings, and you can transfer it to another growing medium as roots develop, allowing for flexible propagation in a variety of systems.

Package-wise, you receive four sheets, each containing 112 plugs, offering ample supply for larger projects or multiple stages of propagation. This setup is designed to be easier to use than traditional soil in many scenarios, while still delivering a reliable start for a range of crops. Whether you’re running a home setup or a small hydroponics operation, these rockwool plugs provide a neat, consistent starting point that can fit into different trays, racks, or media environments.

What you can expect in practice

• High porosity supports oxygen availability around roots, contributing to robust early growth.
• Sterile and inert composition helps reduce contamination risk before transplanting.
• Excellent water retention helps keep roots hydrated between waterings.
• Easy handling light, fluffy cubes that can be cut to fit any setup, with a dedicated hole for seeds or cuttings.
• Versatile applications suitable for hydroponics, cloning, cuttings, and seed starting in various media.
• 4 sheets x 112 plugs provide a scalable solution for ongoing propagation projects.

Usage ideas

Place the plugs in trays or a hydroponic rack, insert seeds or cuttings into the pre-made holes, monitor growth, and transplant when roots emerge. The ability to cut cubes to size ensures you can tailor the setup to your space and crop needs. A clean, compact propagation medium like this can streamline workflows and reduce routine maintenance compared with soil starting methods.

Note: Results can vary based on plant type, environment, and care. This description focuses on features and potential benefits observed in typical propagation scenarios rather than guaranteeing outcomes.