In StockRockwool Propagation Cubes
£10.35£11.50Save £1.15
In stock
Available from our Bristol shop
This item is too big for our parcel service, so we don't sell it for delivery on the website. Buy it in the shop, or contact us for a delivery quote.
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Description
Rockwool is produced from basalt rock, which is melted and then spun into thin fibres. These are mixed with a binding agent and compressed into slabs that are cut into the smaller cubes used for propagation. Fibres in Grodan have been spun in only one direction but Cultilene's Cultiwool propagation cubes have fibres that have been spun in two directions. This gives the cubes great flexibility and great strength when they're wet so they won't go all soggy on you.
Seasoned hydroponics experts swear by Cultilene's Cultiwool propagation cubes because of the support and good aeration properties they provide for strong root growth. A healthy root system means a healthy plant and Rockwool propagation cubes can be used with even the most fragile cultures.
Two sizes are available:
Large - measures 36mm X 36mm X 40mm
Small - measures 25mm X 25mm X 40mm
Highly recommended.
Key facts
| Large | 36 x 36 x 40 mm; tray of 77 or full box |
|---|---|
| Small | 25 x 25 x 40 mm; tray of 150 or full box |
| Material | Cultilene Cultiwool, spun from basalt rock |
| Fibres | Spun in two directions, so the cubes stay strong and keep their shape when wet |
| Brand | Cultilene |
| Sizes | Large - 36mm / Full Box, Large - 36mm / Tray of 77, Small - 25mm / Full Box, Small - 25mm / Tray of 150 |
| Category | Plugs & Substrates |
How to use
Set a cutting or seed in each one and keep them in a propagator. The cubes hold their shape when wet and give good support and aeration for new roots.
Once roots show through, the cubes drop straight into a larger rockwool transplanting cube or your chosen medium. A pH and EC meter helps set the soaking solution. More plugs are in plugs and substrates.
Questions
Which size should I choose?
Large cubes are 36 x 36 x 40 mm and come 77 to a tray; small cubes are 25 x 25 x 40 mm and come 150 to a tray. Both also come by the full box.
How are Cultilene cubes different from Grodan?
Cultilene spin the fibres in two directions rather than one, which makes the cubes flexible and strong when wet, so they do not go soggy.
Growers’ guides
- How to Grow Microgreens, Herbs and Salad Indoors in WinterHow to grow microgreens, herbs and salad leaves indoors through winter: which grow light and hours, trays, the Tray2Grow, NFT set-up, pots and feeds.
- Clay Pebbles and Rockwool Cubes: How to Use Them in HydroponicsWhat clay pebbles and rockwool are, how to rinse, soak and plant in them, which hydroponic systems each suits, and how they compare with coco.
- Propagators and Cuttings: How to Root CuttingsHow to take cuttings that root: choosing a propagator, the starter plugs, Clonex rooting gel, which propagation light and tent, and when to open the vents.
