Affiliate Disclosure
Short version: the site earns commissions on purchases at no extra cost to you, no product can buy a position, and citations are never affiliate links.
GreenhouseSetup.com earns money when a reader buys something through a link here, and that costs you nothing extra. As an Amazon Associate the site earns from qualifying purchases.
What is not for sale
A place in a roundup. A rating. A mention. There are no paid placements and no fee to be considered, and a manufacturer cannot buy its way into a build list. Companies are welcome to send specifications and documentation, which is treated exactly like any other published source and gives them no advantage beyond being easier to research accurately.
When the right answer earns us nothing
This happens regularly with greenhouse structures, where a good deal of the market is sold direct by the manufacturer with no affiliate programme. Those kits are still named and still recommended where they are the right answer, because a site that only recommends what it can monetise is not worth reading.
Be aware of what the button next to such an item does. Since there is no relationship with that maker, the button searches a retailer for comparable equipment rather than for that exact kit. If a direct-sold structure is the one you want, go to the maker and search the name. That is worth saying plainly rather than letting a search result look like the product just described.
Citations are never affiliate links
Links to USDA hardiness zone data, cooperative extension publications, frost-date records and similar sources carry no tracking parameters at all. Those pages are the evidence behind the numbers here, and a reader checking a figure should land on the figure. Routing a data citation through a commercial redirect would undermine the only thing that makes the charts worth citing.
How links are marked
Commercial links carry rel="sponsored nofollow noopener", the standard
machine readable disclosure, and open in a new tab. Product cards name the retailer on
the button so you know where you are going before you click.
Prices and totals
Every price is a snapshot from when the page was written or last verified, which is why build totals are described as planning figures. Greenhouse kit prices move with the season and with shipping costs, sometimes sharply. Confirm the current price on the retailer page before ordering, and expect a multi-thousand dollar build to have drifted.
The limits of the advice
Recommendations here are researched opinions offered in good faith, not guarantees, and growing guidance is not professional horticultural advice. Warranty, returns and defects are between you and the retailer or manufacturer. See the disclaimer for the full position and about for how recommendations are made.