Small Greenhouses

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A small greenhouse gives you a real growing season in a backyard, side yard or patio. Most small greenhouses run from about 8'x7' to 8'x12', or roughly 56 to 96 sq ft: room for seed starting, herbs, salad greens, tomatoes and overwintering potted plants. At Mulberry Greenhouses in Atlanta, GA we carry small greenhouse kits in glass, polycarbonate and cedar from Exaco Janssens, Riverstone MONT, Riga, Cross Country and Alton. Every kit ships free to mainland US addresses.

Which Small Greenhouse Size Do You Need?

Size Floor area Best for
8'x8' About 64 sq ft Seed starting, herbs, one bench or a few raised beds
8'x10' About 80 sq ft Benches on both sides plus room to work; overwintering plants
8'x12' About 96 sq ft Year-round vegetables, citrus, a potting bench and storage

Our tip: most growers wish they had bought one size larger. If your space allows, an 8'x12' gives you the most flexibility. Need more room? See our medium greenhouses.

Shop Small Greenhouse Kits by Type

Small polycarbonate greenhouses

Polycarbonate holds heat well and stands up to hail, a smart pick for cold or stormy areas.

Small glass greenhouses

Glass gives the clearest light and a classic look. See all our glass greenhouses.

Small lean-to greenhouses

A lean-to greenhouse attaches to a sunny wall, saves yard space and borrows warmth from your house. Try the glass Janssens Arcadia.

Small cedar greenhouses

For a natural wood look, the Alton Cheltenham and other Alton cedar greenhouses are made in the UK from Western Red Cedar.

How to Choose the Best Small Greenhouse

  1. Measure your spot. Leave a little room around the greenhouse for doors, gutters and cleaning.
  2. Pick your glazing. Glass for light and looks; polycarbonate for warmth and hail; cedar and glass for a garden-room feel.
  3. Check snow and wind ratings on each product page if you get harsh weather.
  4. Plan ventilation. Small greenhouses heat up fast on sunny days. Roof vents with automatic openers or a solar fan keep plants safe.
  5. Prepare a level base. Our greenhouse foundation guide covers gravel, timber, base frames and concrete.

🌿 Why buy your small greenhouse from Mulberry Greenhouses? We are a small, woman-owned business in Atlanta, GA, accredited by the BBB with an A+ rating. We ship free to mainland US addresses, answer every question personally, and offer a Price Match Guarantee (please check the rules). Call 678-408-8222 and we will help you choose.

Small Greenhouse FAQ

What size is considered a small greenhouse?

Most growers call anything from about 6'x8' to 8'x12' a small greenhouse. These sizes are easy to heat, ventilate and maintain, and many fit without major site work.

What is the best small greenhouse for beginners?

An 8'x8' or 8'x12' polycarbonate kit like the Riverstone MONT is a forgiving first greenhouse: it holds heat, diffuses light and assembles with clear instructions. If you love the look of glass, the Junior Victorian J-VIC 23 is a classic starter.

Can I grow vegetables year-round in a small greenhouse?

Yes. Cool-season crops like lettuce, spinach and kale grow well through winter in most areas. In colder climates, choose insulated polycarbonate and see our guide on how to heat a greenhouse without electricity.

Does a small greenhouse need a foundation?

Every greenhouse needs a level, solid base and should be anchored against wind. Depending on the model, that can be a foundation frame, pavers, gravel with anchors or a concrete slab.

Do I need a permit for a small greenhouse?

Many towns allow small accessory structures without a permit, but rules vary. Check with your building department and HOA before you order.

How is a small greenhouse delivered?

By freight truck, curbside. Shipping is free to mainland US addresses. Tell us if your street cannot take a large truck, and call us at 678-408-8222 before you order if you are unsure which model fits your yard.

Prices, availability and promotions can change at any time. Please check each product page for current pricing.