Cellulose Grow Mat 68 × 45mmPack of 9,450

These cellulose grow mats are cut precisely to 68 × 45mm for direct use in 69 × 52mm microgreen punnets - no trimming, no guesswork. They suit market growers, restaurant suppliers, and serious home producers who need a consistent, soil-free substrate at scale.

Cellulose mats are the go-to substrate for microgreen production because they absorb and retain water without becoming waterlogged. The fibrous structure wicks moisture up to the seed layer, keeping germination conditions stable between waterings. That consistency is especially valuable when you're running multiple trays at once and need predictable results across every punnet.

At 68 × 45mm, each mat drops straight into a standard 69 × 52mm punnet with a 1mm clearance on each long edge. That snug fit prevents seeds from slipping underneath the mat - a common problem when growers cut their own pads from sheet material. The pre-cut format saves time at scale and removes variability from the process.

A pack of 9,450 mats supports serious ongoing production. At one mat per punnet, that covers 9,450 individual grows - enough for a dedicated microgreen operation running multiple daily harvests. For larger commercial setups buying multiple boxes, graduated pricing is available. Contact us for a bulk quotation before ordering.

Pair these mats with a compatible 69 × 52mm punnet tray and a propagation environment with relative humidity around 70-80% during germination. A purpose-built grow cabinet with adjustable climate control gives you the most consistent results, letting you dial in temperature and humidity independently of the season.

Grower’s Note: Soak the mat briefly before placing it in the punnet - 10 to 15 seconds in clean water is enough. Excess water should drain freely; the mat should feel damp but not dripping. Oversaturation is the main cause of damping-off in cellulose-based microgreen production, so resist the urge to keep topping up water once germination begins. Once the radicle has anchored into the mat, reduce irrigation frequency and let the surface approach dryness between feeds.

Priced at £207, with free UK delivery.