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Customers Rated Us 4.6/5 Stars!

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Shop Affordable Greenhouses

A greenhouse gives you control over growing conditions that an open garden cannot: temperature, humidity, pest protection and extended seasons for plants that would otherwise struggle in Australian weather. Our range of cheap greenhouses covers walk-in tunnel domes, polycarbonate aluminium shed kits and compact mini shelf units for smaller spaces, giving you options from a full-scale backyard growing structure to a balcony-sized covered planter with shelving. Whether you grow seedlings, herbs, vegetables, flowers or ornamental plants, there is a cheap greenhouse format that fits the scale of your setup and the space you have available. Browse the full selection at affordable prices with fast shipping Australia wide and a 12-month warranty on every kit. Compare grow tents for a fully indoor growing alternative, or explore the garden accessories range for supplementary growing essentials.

Walk-In Tunnels, Polycarbonate Sheds or Mini Shelf Units: Which Format Fits Your Setup?

The range splits into three distinct formats, each suited to different spaces and growing goals. Walk-in tunnel domes use a lightweight steel frame with UV-resistant film to create a protected environment that is quick to set up and practical to relocate as your garden layout changes. They suit mid-sized gardens where pest and weather protection matters more than a permanent structure. Polycarbonate aluminium shed greenhouses are the more permanent format: rigid panels, double doors and a robust frame handle heavier weather and accommodate more equipment alongside the plants. Mini shelf-style units are compact enough for a balcony or small courtyard, holding trays and pots in a tiered covered rack without requiring significant floor space. For indoor growing without an outdoor structure, grow lights combined with shelving replicate the growing environment inside, and a hydroponics system takes indoor cultivation a step further without soil or natural light dependency.

How to Choose the Right Greenhouse Size for Your Garden and Goals

Sizing a greenhouse starts with two practical questions: how much growing space do you actually need, and how much floor area can you dedicate to the structure. Measure the intended spot before ordering, including overhead clearance for eaves, trees or powerlines that could interfere with a taller frame. Factor in working space inside the greenhouse itself: a unit filled edge to edge with plants leaves no room to kneel, turn trays or move pots around, which limits how practical the space becomes day to day. The growing format matters too, since seedlings and herbs need far less depth and height than full vegetable plants or propagation stations. The planters range covers purpose-built containers that make the most of the interior space without committing to in-ground growing, and the broader outdoor garden collection has tools and accessories for everything that supports the setup from outside.

Frame Material, Cover Type and Ventilation: Specs Worth Checking on the Listing

Australian conditions put outdoor growing structures through more thermal stress than climates in cooler regions, so the specs on each product page deserve a proper read before you order. Aluminium frames resist corrosion and stay dimensionally stable through heat and humidity better than steel alternatives, making them the sounder investment for a greenhouse you plan to keep in place permanently. Polycarbonate panels diffuse light rather than focusing it, preventing the hot spots that can burn foliage through a clear film or glass alternative. Ventilation is the most commonly underestimated spec: a greenhouse with no airflow on a hot Australian day will damage plants rather than protect them, so look for zip-open panels, roll-up sections or dedicated ventilation windows listed in the product details. For covered storage around the greenhouse to house tools, supplies and equipment, sheds and storage options sit alongside the structure naturally, and a standalone outdoor shed is the logical step up when the growing setup outgrows the greenhouse footprint.

Positioning, Ground Surface and Anchoring Your Greenhouse

Position determines how effectively your greenhouse works across the seasons. A spot that receives direct sun for most of the day maximises the passive heat and light the structure collects, which matters most in cooler months when extending the growing season is the priority. Avoid low-lying areas where cold air settles overnight and where heavy rain drains slowly, as persistent moisture under the frame creates structural problems over time. Level ground is essential: an uneven base stresses the frame joints and makes doors and zip panels harder to align and seal correctly. Artificial grass as the surrounding ground surface keeps the area clean, mud-free and easy to maintain without introducing weeds close to the structure. Inside the greenhouse, garage shelving units create efficient vertical organisation for pots, trays and supplies, freeing up floor space and making the interior more productive to work in.

Why Shop at Factory Buys

Factory Buys is rated highly on Trustpilot, and our greenhouse customers regularly call out the quality at the price point and how well the kits pack for delivery. Every unit carries a 12-month warranty and our support team is available 8am to 8pm seven days a week if you need help with sizing, assembly or your order.

How do I choose the right greenhouse size for my yard?

Start with where it will sit and what you want to grow. A bigger greenhouse gives you better working space and flexibility, but only if you can access it easily. Measure your available area and check the product’s footprint, door position, and internal height so it suits your day-to-day use.

What footprint and height should I measure before ordering?

Measure the flat base area, then add clearance around the greenhouse for airflow, maintenance, and door opening. Check for overhead obstacles like trees, eaves, and powerlines. Compare your measurements to the greenhouse’s external footprint and peak height listed on the product page, not just the name size.

Should I choose aluminium or steel frame for outdoor durability?

Aluminium is often a good pick if you want something that’s easier to handle during assembly and suits long-term outdoor use. Steel can feel sturdier, but weight and upkeep can vary by design and finish. The best choice depends on your conditions, so check the listing for frame details and care notes.

What’s involved in assembling and anchoring a greenhouse at home?

Most greenhouses arrive flat packed and need assembly on a solid, level base. Set aside time and space to lay out parts, and follow the product listing for any specific setup notes. Instructions and tools are included. Anchoring is important for stability in wind, so follow the included instructions and check whether a base frame or fixings are required. If you would rather not tackle it yourself, our partnership with Airtasker makes it easy to find a local professional to help.

What should I know about dispatch, delivery, warranty, and support?

All orders are dispatched from our warehouse within 1 to 2 business days. Delivery typically takes 1 to 12 business days, depending on your location and the courier. All products include a 12 month warranty, and our Customer Support team is available 8 am to 8 pm, 7 days per week. If you need help at any stage, visit our Contact Us page and include your order number plus a short description so we can assist sooner.