Johnny's offers a selection of seed starting trays, flats, and humidity domes to accommodate whatever it is you decide to grow. All of our seedling products follow industry 1020 tray standard size (actual footprint: 11" x 21"). We offer supplies that are economical enough to be disposable, but are heavy-duty enough to be reusable over multiple seasons, including: germination trays with and without drainage holes; microgreens trays; mesh trays; cell flats; and clear plastic domes. Available in small and case quantities. To compare products, including compatibility across products, see our Trays, Domes & Flats Comparison Chart (at right).
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NanoDome – Single
LED or T5HO Strip Light Accessory
Humidity dome with groove for resting a grow light.
Sale
NanoDome – 5 Count
LED or T5HO Strip Light Accessory
Humidity dome with groove for resting a grow light.
Sale
NanoDome – 25 Count
LED or T5HO Strip Light Accessory
Humidity dome with groove for resting a grow light.
Follow the instructions in this downloadable/printable Tech Sheet (PDF) for assembling your Johnny's Seedling Light Cart.
Instruction sheet for the SunBlaster Light Timer.
General definitions and details to look for when deciding which type of supplemental lighting to use for growing seedlings, plus some basics on the physics of light. Aspects covered include color and color temperature, lumens, wattage, determining the number of lights you will need, and timing.
Comparison Chart
Seedling Light Carts | Comparison Chart (PDF)
Use this full-color, downloadable/printable (PDF) Seedling Light Cart Comparison Chart to view and compare different cart models.
Instruction sheet for the Sunblaster Strip Light Stand.
LED Strip Lights Owner Guide: Full-spectrum light ideal for propagation and growth.
Comparison Chart
Seedling Light Carts Replacement Parts | Comparison Chart (PDF)
View this comparison chart for details regarding components and replacement parts for our Seedling Light Carts, including Part #, Trays, Shelves, Fixtures, Bulbs per Fixture, and which part # to order to replace a light fixture, bulb, or tray for your Seedling Light Cart. Note: Replacement light fixtures include bulbs.
Key Growing Information
Northern Lights Flower Mix | Key Growing Information
Written by our research team, this reference contains the essential information for growing Johnny's Northern Lights Flower Mix. Read more for a successful harvest!
Guide de propriétaire pour le Sunblaster LED Strip Light. Éclairage horticole de spectre complet. Idéal pour la propagation et la croissance.
Follow the instructions in this tech sheet for assembling and using your Johnny's Commercial LED Light Cart
Compare details for our LED and T5HO Strip Lights, accessories, and kits, including part #, length (in. and cm.), # LEDs, lumens, watts, voltage, and spectrum.
A technical specification comparison, with charts and spectrum output graphs, of the Sunblaster T5HO to the Sunblaster LED grow lights.