Growers have had good luck keeping 2-liter soda bottles in the freezer, then setting them in the water trays with the plants.
(Growers; have had; good luck keeping 2-liter soda bottles in the freezer, then setting them in the water trays with the plants)
Growers
have had
good luck keeping 2-liter soda bottles in the freezer, then setting them in the water trays with the plants