About

Defy Frost covers the equipment that extends the growing season: greenhouse kits from the $300 walk-in to the glass orangery, high tunnels, cold frames, heaters, and the frost-protection gear that saves a tomato crop at midnight. We compute the heating math in real BTUs and dollars, compile snow-load ratings from the manufacturers' own sheets, and read what hundreds of verified owners report about assembly day. Frost wins against wishful thinking. It loses against preparation.

A backyard greenhouse covered in snow, glowing against a winter dusk — A backyard greenhouse holding its own through a hard snow. Season extension is the whole job. *Wonderlane / Flickr (CC BY 2.0)*

What we cover

The catalog runs from first-greenhouse buyers to growers adding a second structure. If it keeps plants alive past the frost date, it is in scope:

Greenhouse kits: walk-in, lean-to, hobby, and four-season glass.
High tunnels and polytunnels.
Cold frames and low tunnels.
Heaters, thermostats, and the BTU math that sizes them.
Frost cloth, fleece, and row cover.
Foundations, anchoring, and snow- and wind-load ratings.
Glazing: polycarbonate, glass, and film, and how each holds heat.

How we check our facts

Every claim leans on three sources, in this order. First, the manufacturers' own spec sheets for dimensions, materials, and load ratings. Second, verified owner reviews, often hundreds per kit, for what assembly and a real winter actually feel like. Third, computed heating economics: we run the BTU and dollar math rather than repeating a brochure number. Prices and specifications are dated in each article. When a figure is unverified, we say so on the line where it appears.

Feathered frost crystals spread across a cold pane of glass — Frost on the glass is the deadline. Everything we publish is aimed at beating it. *athos[hun] / Flickr (CC BY-SA 2.0)*

What we do not do

We cover equipment and growing, not health or wellness. There are no medical claims here and no "boost your immunity" garden copy. We do not sell coverage: no brand pays for a review, a ranking, or a kinder verdict, and affiliate links never decide what gets tested or how it scores. The details are on our disclosures page.

Who writes this

The Defy Frost Team. Greenhouse and frost-protection equipment reviews built from verified owner reports, manufacturer documentation, and computed heating economics.

Corrections

Prices move, models get revised, and ratings get restated. If you find something wrong or out of date, tell us at our contact page. Corrections are welcome and acknowledged where they are made.