Seedlings growing in cell flats.

Seed Starting Supplies

252 Products
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50 medium plain holes (not countersunk), size B.
128 medium plain holes (not countersunk), size B.
50 small plain holes (not countersunk), size C.
288 small plain holes (not countersunk), size C.
128 large plain holes (not countersunk), size E.
36 medium plain holes (not countersunk), size B.
36 large plain holes (not countersunk), size E.
Create square indents for potting-up mini blocks.
Easily level soil in Soil Blocker grids.
Our favorite for making perfect soil blocks.
These wide-mesh bottom trays are ideal for soil block propagation.
Keeps all your essential potting items conveniently at arm's reach.
Use with soil blockers to create dibbled holes for smaller seeds.
Ideal for suspending SunBlaster lighting above your growing area.
Energy efficient LED lighting for growing quality plants.
Must-have for consistent temperature control with heat mats.
Precise lighting control for your indoor growing space.
Humidity dome with groove for resting a grow light.
Use with soil blockers to create dibbled holes for seeds or cuttings.
Expand your lighting to grow bigger, healthier plants.
Energy efficient LED lighting for growing quality plants.
Replacement tube for #7294 and #7295 light carts.
Add on to your strip lights for more growing space.
These wide-mesh bottom trays are ideal for soil block propagation.
Humidity dome with groove for resting a grow light.
Energy efficient LED lighting for growing quality plants.
Locks two Johnny's Modular LED Grow Light Carts together.