The know-how, free to read
The Greenlyhouse Blog
Everything worth knowing before and after you buy a greenhouse, in plain American English, from people who know these structures bolt by bolt.
What Size Greenhouse Do I Need?
Width decides how the greenhouse works, length decides how much it grows, and almost everyone buys too small. Here is how to size it once and be done.
Read the greenhouse sizing guidePlanning a purchase? Start here
BuyingWhich Greenlyhouse Greenhouse Is Right for You?
Same steel frame, same panels, same warranty. What actually separates our four models is width, shape and the way you will use them. Here is the honest comparison.
Compare our four greenhouse models
BuyingGreenhouse Buying Guide: What to Know Before You Order
A greenhouse is a ten-year purchase that arrives on a freight truck. Twenty minutes with this checklist prevents every expensive surprise we know of.
Run through the pre-order checklist
BuyingBest Greenhouse for Wind and Snow
Greenhouses rarely fail because a part broke. They fail because they were never anchored, or because the structure was weak by design. Here is what actually matters.
See what makes a greenhouse storm-proofThe latest articles
MaterialsPolycarbonate vs. Glass Greenhouses
Glass is beautiful and transmits a little more light. Twin-wall polycarbonate insulates better, survives hail, and costs less to live with. Here is the fair fight.
Compare polycarbonate and glass glazing
MaterialsHow Twin-Wall Polycarbonate Works in a Greenhouse
Hold a twin-wall panel up to the light and you see the trick immediately: two sheets, a grid of air channels between them, and physics doing the rest.
Learn how twin-wall panels work
MaterialsGalvanized Steel vs. Aluminum Greenhouse Frames
Aluminum never rusts and weighs nothing. Steel is stiffer, heavier and cheaper per unit of strength. Which one you want depends on what your greenhouse has to endure.
Compare steel and aluminum frames
InstallationGreenhouse Foundations and Anchoring
Assembly is a calm weekend on a flat, anchored base and a frustrating one on grass. The foundation is half the project. Here is how to do it properly.
Learn how to prepare a greenhouse foundation
InstallationWhere Should You Place a Greenhouse?
The right spot is decided in winter, when the sun is low, the shadows are long and the path to the door is muddy. Here is how to read your yard before the greenhouse arrives.
Find the right spot for your greenhouse
InstallationHow to Level the Ground for a Greenhouse
No special machinery, no contractor: a string line, a long level, a tamper and a patient afternoon get a backyard from sloped lawn to a base ready for steel.
Follow the ground leveling steps
InstallationGreenhouse Ventilation Guide
A sealed greenhouse cooks on any sunny morning, in any month. Ventilation is not an accessory to add someday; it is how the machine is supposed to work.
Read the greenhouse ventilation guide
GrowingWhat Can You Grow in an Unheated Greenhouse in Winter?
An unheated greenhouse will not hand you July tomatoes in January. What it will do, reliably, is keep a bed of hardy greens alive and growing while the yard outside is frozen.
See what grows in winter without heat
GrowingHow to Keep a Greenhouse Cool in Summer
The structure that stretches your spring will happily cook your tomatoes in July. Cooling a greenhouse is a solved problem; here is the toolkit, in order of impact.
Learn how to cool your greenhouse
GrowingGreenhouse Layout Ideas: Beds, Paths and Shelving
The same floor plan does not fit a 6.5 foot and a 10 foot greenhouse. Layout follows width, and width decides whether you get one bed, two beds, or two beds and a real path.
Plan your greenhouse layoutBrowse by category
Done reading, ready to grow?
Four greenhouse models, from a compact 43 sq ft starter to a 387 sq ft walk-in, all on the same galvanized steel frame, all shipped free in the lower 48.
