Choosing the right seedling trays
Jul 20, 2020
2 minutes
BILL KERR
Most seedling trays are made of expanded polystyrene. In this manufacturing process, polystyrene beads are placed in a mould, which is heated, causing the beads to expand and form the tray.
The more beads that are inserted into the mould, the greater the density and, of course, weight of the tray. The
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