Start with what you want to grow, the space you have and how exposed the site is. Then compare the structure.
A little protected space for seedlings, salads and a sheltered patio.
Read the guide 02More working space with a lightweight frame and flexible cover.
Read the guide 03A lasting growing space for border crops, staging and a full growing year.
Read the guideAllow for a path, door opening, staging and the spread of mature plants. A 6 × 4 greenhouse and a shelving growhouse serve different purposes. If you want tall cordon tomatoes, consider usable eaves height as well as the height at the ridge.
Compare the frame, glazing, base, anchoring, delivery and assembly. A cheap structure can be a poor choice for an exposed site. Check replacement panels or covers, warranty details and the seller’s current instructions before ordering.
Affiliate links · These are options to compare, not hands-on test winners. Check the exact model, current price and availability on Amazon.
A compact shelving-style growhouse for trays and young plants.
Before you buy: Useful for a sheltered patio; secure it against wind and check shelf clearances. A cover does not provide frost-free winter conditions.
View on AmazonA freestanding three-shelf option with rigid panels.
Before you buy: Compare internal shelf space, opening access and timber maintenance before choosing it for tall plants.
View on AmazonA covered walk-in growing space with shelving for propagation.
Before you buy: Check anchoring, cover replacement availability and room to stand once shelves are full. Best considered for a sheltered position.
View on AmazonA compact walk-in structure with a PE cover and shelves.
Before you buy: Measure the usable aisle as well as the outside footprint. Lightweight covers need ventilation and secure anchoring.
View on AmazonA permanent-style aluminium greenhouse with clear polycarbonate glazing.
Before you buy: Check the exact variant, base preparation, anchoring and included vents. The quoted footprint is not the planting area.
View on AmazonA larger garden greenhouse for a mix of border crops and staging.
Before you buy: Allow for a central path and full-grown crops. Confirm glazing, assembly requirements and delivery access with the seller.
View on AmazonExtra shelving to organise seed trays and smaller pots.
Before you buy: Check load limits and stability. Lower shelves receive less light, and heavy wet pots may need stronger staging.
View on AmazonTemperature-responsive roof ventilation for compatible greenhouse vents.
Before you buy: Check compatibility and lifting capacity before ordering. Continue checking greenhouse temperatures after fitting.
View on AmazonA heated windowsill propagator for small batches of seeds and cuttings.
Before you buy: Check the heating specification and tray sizes. Warm germination is only the first step: seedlings need light and suitable temperatures afterwards.
View on AmazonExplore useful books with reading levels, practical notes and links back to our growing guides.
Browse greenhouse beginners books ↗