The step between a rooted plug and a full grow systemCultiwool cubes are the standard way to take a rooted plug and grow it on before it goes into slabs, pots or a hydroponic system. The range covers 3 inch and 4 inch cubes, each available with a small or large hole so you can match the cube to the plug you are using, plus a 150mm cube with a large hole — the block many growers still call a Hugo. A cube tray is also available to keep smaller cubes upright, evenly spaced and easy to move as a set.Key Benefits Choice of sizes - 3 inch, 4 inch and 150mm cubes to suit the stage the plant is at. Small or large holes - match the cube to your rooting plug for a snug, gap-free fit. Consistent rockwool structure - even water holding, so cubes behave the same across a batch. 150mm large-hole block - the bigger option for growing plants on to full size. Cube tray available - keeps cubes stable, spaced and simple to shift in one lift. Clean, inert medium - you control the feed from day one with nothing coming from the substrate. Where Most Cuttings Go WrongThe riskiest moment in propagation is not rooting, it is the move afterwards. Drop a plug into a hole that is too big and the roots sit in an air gap and stall; force it into one that is too small and you tear the new roots off. Matching hole size to plug size sounds trivial, but it is the difference between a batch that carries on growing without a check and one that sulks for a week.How to Use Soak cubes in pH-adjusted solution until fully saturated, then let them drain. Choose the hole size that matches your rooting plug or smaller cube. Drop the plug in so its top is level with the cube surface. Sit cubes in a tray to keep them upright and evenly watered. Water little and often, never letting the cube dry out completely. Specifications Product Type Rockwool cubes and cube tray Cube Sizes 3 inch, 4 inch and 150mm Hole Options Small hole or large hole Material Cultilene rockwool Application Rooting cuttings, seedlings and growing on Also Available Small cube tray
