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Cold frames, hoop houses and high tunnels

Greenhouses

Cold frames, hoop houses and high tunnels

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Overwintering Film and Polycarbonate

Find Polyethylene and Polycarbonate Sheeting for Overwintering

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Season extenders for your greenhouse and garden

Protect your greenhouse and plants from winter cold and frost.

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Find great deals and low prices in our Overstock Department, where you can browse a wide variety of gardening supplies, tools, and even greenhouses.



New Products

Premium Package 24' Wide Cold Frame - 6' Sidewalls
Premium Package 24' Wide Cold Frame - 6' Sidewalls

This package not only includes the essential items necessary for a complete greenhouse, it also includes many accessories and amenities that allow...

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Solo 2.25 Gallon Professional Sprayer
Solo 2.25 Gallon Professional Sprayer

The Solo 2.25 Gallon Professional Sprayer is a long-lasting, easy-to-use chemical applicator. Made of high-density polyethylene with UV inhibitors ...

Price: $49.95

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16' Wide Economy Cold Frame Package
16' Wide Economy Cold Frame Package

This package includes the essential items necessary for a complete greenhouse: frame, covering, and a way to attach the two. There are always oth...

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Phytotronics 12 Shelf Germination Chamber
Phytotronics 12 Shelf Germination Chamber

Designed by horticulturalists to feature everything needed for successful seed germination, the Phytotronics 12 Shelf Germination Chamber is an i...

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We Sell the Things That Make Plants Grow

Greenhouse Megastore is not only a leading online retailer for greenhouses and greenhouse supplies, but also garden supplies of all types, plant pots, polycarbonate panels and other plastic sheets, shade cloth, weed barrier, hydroponic supplies, grow lights and much, much more! Shop from our commercial quality products without being forced to pay commercial prices or order commercial quantities. Greenhouse Megastore is perfect for the professional grower and the hobby gardener alike!

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