The best buy to watch for during the sale is a polycarbonate greenhouse kit sized for the space you have, and the Palram Canopia Mythos 6x8 greenhouse is the all-round pick for most backyards: a 6 by 8 foot aluminum frame from a long-established greenhouse brand.
Palram Canopia Mythos 6x8 greenhouse
A 6 by 8 foot polycarbonate and aluminum greenhouse from a long-established greenhouse brand, sold with hanging-plant hardware. A sensible size for a first real greenhouse that fits most backyards.
Check it on AmazonWhat is worth buying on Black Friday
Eight picks across the categories below, from budget to premium. Check the current price on the product page before you buy, and check the footprint against your site first.
- Budget mini greenhouse: Ohuhu tabletop mini greenhouse or TianC 4-tier mini greenhouse
- Budget hoop tunnel: OOTONAT 8 ft garden hoop tunnel kit
- Mid-range greenhouse: Palram Canopia Mythos 6x8 greenhouse
- Premium greenhouse: Broivira 8x12 polycarbonate greenhouse
- Mid-range heater: Dr. Heater DR218 infrared greenhouse heater
- Budget grow lights: Barrina 4 ft LED grow lights (6 pack)
- Budget exhaust fan: iLIVING 12 inch shutter exhaust fan
Black Friday greenhouse kit and mini greenhouse deals
Greenhouse kits are the big-ticket purchase of the category, and the one most worth waiting for a sale on. A kit that arrives in the off-season is also a kit you can build before spring.
Decide the size first. The greenhouse size calculator sets the footprint from what you want to grow, and the best polycarbonate greenhouses and best walk-in greenhouse kits roundups list the strongest models.
Palram Canopia Mythos 6x8 greenhouse
A 6 by 8 foot polycarbonate and aluminum greenhouse from a long-established greenhouse brand, sold with hanging-plant hardware. A sensible size for a first real greenhouse that fits most backyards.
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Broivira 8x12 polycarbonate greenhouse
An 8 by 12 foot walk-in with a heavy-duty aluminum frame, a lockable door and an adjustable roof vent. The big-space pick for growers who want room to work inside.
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Ohuhu tabletop mini greenhouse
A 36 by 18 by 33 inch frame with a roll-up door and a PVC cover, for potted plants and seedlings indoors or out.
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A four-tier plastic shelf greenhouse with a PE cover, suited to seedlings and a few potted plants on a patio or porch.
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OOTONAT 8 ft garden hoop tunnel kit
A fiberglass hoop set for raised beds that holds netting, row cover or plastic. A cheap way to extend the season without building a greenhouse.
Check it on AmazonWhich fits which buyer: Pick the Mythos for a first greenhouse, the Broivira if you want to walk and work inside, and the mini greenhouses and hoops if you are only starting seedlings or extending a raised bed. Cold frame vs mini greenhouse explains the trade-off.
What to skip: Thin film kits sold as year-round structures, and any greenhouse that does not state its snow and wind rating. Plan for anchoring too, as covered in anchoring a greenhouse against wind.
Black Friday greenhouse heater deals
A heater is a seasonal purchase, which makes the weeks before winter the right time to buy one. Size it to the cold you actually get and the glazing you have, not to the largest number on the box.
Run the numbers with the greenhouse heater BTU calculator, then compare fuel types with electric vs propane and the best greenhouse heaters page.
Dr. Heater DR218 infrared greenhouse heater
A 1,500W infrared heater sold with a digital greenhouse thermostat that has summer and winter modes. The thermostat matters as much as the heater, because it stops you running it harder than you need to.
Check it on AmazonWhich fits which buyer: An infrared electric heater with a thermostat suits a small greenhouse that has a safe outdoor-rated power supply. Larger or off-grid structures may need propane.
What to skip: Any heater without a thermostat, and any open flame in a sealed space without the ventilation and safety checks in greenhouse electrical and safety.
Black Friday grow light deals
Grow lights are the other off-season purchase, because seed starting begins before the weather lets you use the greenhouse. Full-spectrum LED strips are cheap and linkable, which makes a bench setup easy to scale.
Check the light you need with the DLI and PPFD calculator, and see the best grow lights for seed starting roundup.
Barrina 4 ft LED grow lights (6 pack)
Six 4 foot T8 full-spectrum LED strips (252W total) in a plug-and-play set. A low-cost way to light seed trays on a bench.
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Barrina T5 4 ft grow lights (8 pack)
Eight 4 foot T5 full-spectrum strips (160W total) with separate on/off switches, for larger seed-starting shelves.
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FREELICHT 5-tier plant stand with grow lights
A rolling metal stand with 4 full-spectrum LED lights and a timer. A ready-made seed-starting shelf that does not need a bench.
Check it on AmazonWhich fits which buyer: Buy the strips for a bench you already own, and the stand if you want a self-contained shelf with a timer.
What to skip: Lights quoted in 'equivalent watts'. Look at the real wattage and the coverage area instead.
Black Friday greenhouse ventilation and fan deals
Heat, not cold, is what kills most greenhouse crops, so ventilation is the cooling plan. A thermostat-driven exhaust fan moves air out as soon as it gets warm, and an automatic vent opener works without power.
Size the fan with the ventilation CFM calculator, then read the best greenhouse exhaust fans and best automatic vent openers pages. Vent opener vs exhaust fan helps you choose.
iLIVING 12 inch shutter exhaust fan
A wall-mounted 12 inch fan rated at 960 CFM for roughly 1,400 square feet, with an automatic shutter, thermostat and variable speed control. Ventilation is the cooling plan for most greenhouses, and this is a proven size for a small one.
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iLIVING 14 inch shutter exhaust fan
A 14 inch wall-mounted fan rated at 1,200 CFM with temperature and humidity controls and a DC motor. The step up for a larger greenhouse.
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Digital max-min greenhouse thermometer
Records the highest and lowest temperature since you last reset it, which tells you what your greenhouse does overnight and at midday.
Check it on AmazonWhich fits which buyer: The 12 inch fan fits a small greenhouse, the 14 inch fan fits a larger one, and a max-min thermometer shows whether your ventilation is working.
What to skip: A fan sized for the floor area but not for the air changes you need. Check the CFM, not just the diameter.
Is Black Friday a good time to buy a greenhouse?
It can be. Greenhouse kits, heaters and grow lights are the kind of seasonal gear sale shoppers tend to watch, and last year's models are where deals most often appear. Small items like thermometers and ties rarely change much.
Plan the build before you shop. A greenhouse without ventilation or heat is half a project, and a site that is not level or anchored is a risk. Check the current price on the exact model, then make sure the return window covers the time you need to assemble and test it. Our greenhouse gift ideas, the one big greenhouse gift and the complete builds help you plan what to buy.
Shop Amazon's Black Friday deals
Amazon's deals page shows what is live right now. These searches jump straight to each category:
Shop Amazon's Black Friday deals
- Greenhouse kits
- Mini greenhouses
- Greenhouse heaters
- Grow lights
- Exhaust fans
- Seed starting supplies
- Shade cloth
More from this site: best hoop house kits, best greenhouse thermometers and greenhouse ventilation basics.
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