PlantBest Plastic Greenhouse Kit Refill - 72-Cell - 1.75in x 1.75in Cells

Replacement Cell Inserts for Multi-Season Greenhouse Kit Use

A greenhouse kit's tray and dome typically outlast the cell inserts, which crack or warp after repeated seasons of filling, watering, and transplanting out of them. PlantBest's Plastic Greenhouse Kit Refill replaces just the inserts: eight nine-cell trays, 72 cells total, sized at 1.75in x 1.75in per cell, so the original tray and dome keep working season after season.

The nine-cell insert trays also work on their own without a carrier tray or dome, for growers who want extra capacity for a second, smaller propagation round.

Key Features & Benefits

• 72-cell refill pack — eight nine-cell insert trays replace a full set of worn cells in one purchase.
• 1.75in x 1.75in cells — a consistent cell size across the pack for even media volume and predictable seedling development.
• Works in-tray or standalone — refill into an existing greenhouse tray and dome, or run the nine-cell insert trays independently for a smaller batch.
• Compatible with PlantBest 72-cell kits — sized as a direct replacement for the inserts in PlantBest's 72-cell greenhouse and seed-starting kit systems.

Who Should Use This Refill

Owners of a PlantBest 72-cell greenhouse kit who want to reuse their existing tray and dome while replacing worn or cracked cell inserts get the most value from this refill pack.

About PlantBest

PlantBest builds propagation hardware too. That runs alongside its coir media. It targets home gardeners and commercial growers. Both groups start plants from seed or cutting. Coir runs through the line as a substrate. It's a peat-free option throughout. The brand also sells trays, domes, and heat mats. Those support germination and early growth stages.

Frequently Asked Questions

Do I need a full kit to use this refill?

No, while the refill is sized to work inside a PlantBest greenhouse kit's tray and dome, the individual nine-cell insert trays can also be used on their own without a carrier tray. That makes the refill useful even for growers without a matching PlantBest tray and dome.

What cell size do these inserts have?

Each cell measures 1.75in x 1.75in, a small-cell size suited to starting seeds and rooting cuttings before they move up to a larger container. The consistent size keeps media volume and watering predictable across the whole tray.

Which PlantBest kits is this refill compatible with?

This refill is sized for PlantBest 72-cell plastic greenhouse kits, matching the standard tray and dome footprint used across that product line. Confirm your existing tray uses the same 1.75in cell spacing before ordering.

How many refill trays come in one pack?

One pack includes eight nine-cell insert trays, for 72 cells total. That matches the cell count of a full 72-cell greenhouse kit in a single refill purchase.