Grow Year-Round With a Greenhouse
A greenhouse extends your growing season to 12 months, protects tender plants, and lets you start seeds weeks before the last frost.
Why It Works
A greenhouse is a game-changer for serious gardeners. It extends the growing season by 2–3 months on each end, protects tender plants and seedlings from frost, creates a warm microclimate for heat-loving crops (tomatoes, peppers, cucumbers produce far more in a greenhouse than outdoors), and provides a pleasant working environment in poor weather. Even a small lean-to greenhouse against a sunny wall dramatically expands what you can grow and when you can grow it.
Best for
- yards where seating, paths, and a mow/edge plan are the real constraints
- people committing to a short plant list with structure + seasonal interest
- renters or owners who can change beds more easily than hardscape
Skip if
- you will not check how much of the day the patio actually gets sun before buying plants
- you want zero establishment care in year one
Common mistakes
For a mixed-style backyard, the usual miss is collecting plants with no massing plan. People also ignore how much of the day the patio actually gets sun and end up with a floating patio with no planting edge or shade strategy. A long plant receipt without massing still looks unfinished from the house.
Plan this first
Decide seating and sun pattern first. Build a short list around a short plant list with structure + seasonal interest, then preview massing in Arden from the main viewing angle before the nursery run.
How to Achieve This Look
Choose a type based on space and budget: lean-to (against a south-facing wall), freestanding (maximum light), or cold frame/polytunnel (budget options). Materials: polycarbonate panels are durable and insulating; glass is traditional and offers best light transmission; polyethylene film is cheapest for polytunnels. Orient the ridge east-west for maximum winter sun. Include ventilation (roof vents and louver vents at low level create convection airflow) — greenhouses overheat easily. Add a min-max thermometer, staging (shelving for seedlings), and a water supply. For winter use, add a thermostatically controlled heater set to frost-free (35–40°F minimum).
Try It with AI
Arden helps you visualize how a greenhouse will look in your garden. Preview different types, sizes, and positions to find the greenhouse that integrates with your landscape design.
“Redesigned the whole backyard before I bought a single plant. Saved me from a couple of bad calls.”
Frequently Asked Questions
01 What size greenhouse should I get?
Bigger than you think — you will fill it. Minimum useful size is 6x8 feet for a hobbyist. 8x10 is much more practical. If possible, buy the largest you can afford and fit — every greenhouse owner wishes they had gone bigger.
02 Do I need planning permission for a greenhouse?
In most areas, a small freestanding greenhouse (under 100 square feet and under 8 feet tall) is permitted without permission. Check local building codes. HOAs may have additional restrictions on placement and materials.
03 What should I grow in a greenhouse first?
Start tomatoes, peppers, and cucumbers for summer harvest (the three crops that benefit most from greenhouse growing). In spring, use it for seed starting. In winter, grow cold-hardy crops: lettuce, spinach, radishes, and herbs.
04 How do I heat a greenhouse in winter?
A small electric fan heater with thermostat is the simplest option — set to frost-free (35°F). Insulate with bubble wrap on the north wall. Solar water drums (painted black) absorb heat by day and release it at night. Many crops survive unheated greenhouses.
