If you're shopping for a greenhouse, you've probably noticed there's no shortage of options — different shapes, frame materials, glazing types, and sizes, all claiming to be the right fit. After 10+ years of helping homeowners, schools, and community gardens find the right structure, here's the real breakdown of what actually matters when you're choosing.
1. Start with how committed you are to using it
Before comparing models, it's worth being honest about how you'll actually use the space. A dedicated greenhouse for serious year-round growing is a different purchase than a season extender for starting seedlings in spring. If you're not sure yet, a smaller or mini greenhouse can be a lower-commitment way to start — you can always size up later.
2. Pick your location first
Where the greenhouse goes affects almost every other decision. Look for:
- Sun: 6+ hours of direct sun is ideal. South-facing is best; if you're doing a lean-to against your house, the south or east side usually works better than north.
- Level, well-drained ground: avoid low spots where water collects.
- Access: proximity to water and electricity will save you headaches later, especially if you plan to add heating, irrigation, or lighting.
- Clearance: stay clear of overhanging trees and check for local zoning or permit requirements before you commit to a size.
3. Choose your glazing material
This is usually the biggest decision, and it's really a trade-off between light quality and durability:
- Glass gives the best light transmission and a classic look that holds up for decades, but it's heavier, pricier, and can crack under significant impact.
- Polycarbonate (single, twin-wall, or triple-wall) is virtually shatterproof, insulates better than glass, and diffuses light so it won't scorch plants — a great choice for colder climates or anyone wanting lower-maintenance panels. More layers means better insulation and strength, so colder climates generally call for thicker panels.
We carry both — European-made greenhouses in glass, cedar, and polycarbonate construction — so this is usually one of the first things we talk through with customers.
4. Choose your frame
Aluminum frames are lightweight and won't rot or rust, making them a low-maintenance option. Cedar frames bring real curb appeal and natural rot-resistance, but expect to do occasional upkeep to keep them looking their best. Either way, make sure the frame is rated for your local snow and wind loads — this matters more than people expect.
5. Size it right — and then size up
Greenhouses fill up faster than most people expect, between plants, shelving, and workspace. If you're torn between two sizes, we generally recommend going with the larger one if your space and budget allow it.
6. Don't skip ventilation
A greenhouse can overheat fast on a sunny day, even in cooler months. Look for roof vents, side vents for cross-ventilation, and consider an automatic vent opener so you're not stuck manually managing temperature swings while you're at work.
7. Plan your base
You've got a few solid options: a concrete or paver base for permanence and easy cleaning, a wood-framed base that's simpler to build and adjust, or ground anchors that let the greenhouse sit closer to grade. Whichever you choose, a flat, level surface is non-negotiable.
Not sure what fits your space? That's what we're here for.
Every yard, budget, and growing goal is a little different — and a lot of what we do is custom sizing and fitting greenhouses to spaces that don't match a standard chart. We also work with schools and community gardens on purchase orders and ADA-compliant raised beds, and offer financing if you'd rather spread out the cost.
Call or text us at 732-806-7959 and tell us what you're working with — we'll help you find the right greenhouse for your space, not just the easiest one to sell.