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1ft Wide Lean To Greenhouses
1ft wide lean-to greenhouses are the narrowest wall-mounted growing structures available in the UK — designed for spaces under 400mm deep. Priced from £415 to £485, these Access-built models use toughened safety glass and heavy-gauge aluminium frames with a 10-year manufacturer warranty. Best for: herb growing, seed propagation, overwintering tender plants, and sheltered hardening-off in ultra-tight side returns, porches, and apartment balconies.
Why Choose a 1ft Wide Lean-To Greenhouse?
A 1ft wide lean-to greenhouse solves a problem most manufacturers ignore: what do you grow in when your only available space is a narrow strip against a wall? These models fit into gaps as tight as 350–400mm — think side returns next to a front door, a slim porch wall, the edge of a balcony railing, or a sheltered alley between terraced houses.
At this width, you won't be growing full-sized tomato plants. But that's not what these are built for. A 1ft lean-to is a specialist tool for herb cultivation, seed starting, overwintering tender perennials, and hardening off seedlings in spring. The wall-mounted position means your house wall radiates background heat into the structure — typically 2–3°C warmer than the outside air, even without a heater. That's enough to keep frost off most herbs and protect potted plants through a standard UK winter.
All three models we carry in this width are made by Access, a British-designed brand that builds exclusively with toughened safety glass and thick-gauge aluminium frames. Every model ships with free UK delivery within 7–10 working days and carries a 10-year manufacturer warranty.
What Can You Realistically Grow in a 1ft Wide Greenhouse?
Herbs are the standout crop. A 1x3 Access Westminster will comfortably hold 8–12 potted herbs arranged on two shelves — basil, parsley, coriander, thyme, rosemary, and mint all thrive in this setup. The sheltered position and toughened glass protection mean herbs that would normally die back in November can keep producing right through to February in milder parts of the UK.
Seed propagation is the other major use. Fill the shelves with seed trays from late February onwards, and you'll have strong seedlings ready to plant out 3–4 weeks earlier than starting on an open windowsill. The consistent temperature (no central heating fluctuations) gives much better germination rates — in our experience, around 15–20% higher than a kitchen windowsill for crops like tomatoes, peppers, and courgettes.
Overwintering tender plants like fuchsias, geraniums, and citrus trees works well in the taller Westminster lean-to (1x3), which has enough headroom for plants up to 900mm tall. The Herb House model has lower headroom and suits compact potted plants only.
1ft Lean-To Models Compared
We stock three models in the 1ft width category. Here's how they differ:
| Feature | Access Westminster 1x3 Lean-To | Access Half Westminster 1x5 Mini | Access Herb House 1x3 Mini |
|---|---|---|---|
| Price | £485 | £415 | £419 |
| Type | Lean-to (taller) | Half-height mini lean-to | Compact herb growhouse |
| Nominal Size | 1ft x 3ft | 1ft x 5ft | 1ft x 3ft |
| Glazing | Toughened safety glass | Toughened safety glass | Toughened safety glass |
| Frame | Heavy-gauge aluminium | Heavy-gauge aluminium | Heavy-gauge aluminium |
| Access Type | Front opening panels | Lift-up lid access | Lift-up lid access |
| Warranty | 10 years | 10 years | 10 years |
| Delivery | Free, 7–10 days | Free, 7–10 days | Free, 7–10 days |
| Best For | Overwintering taller plants, herbs on shelves | Maximum shelf length in minimum depth | Dedicated herb growing, compact spaces |
Our recommendation: If you need height for overwintering potted fuchsias, geraniums, or small citrus trees, the Westminster 1x3 lean-to at £485 gives you the most headroom. If you want maximum growing length in the shallowest possible footprint, the Half Westminster 1x5 stretches to 5ft along the wall while staying just 1ft deep — ideal for a long, narrow side return. The Herb House at £419 is purpose-built for herbs and compact propagation trays.
Why We Chose This Range
Finding genuinely good greenhouses at 1ft wide is tricky. Most manufacturers don't bother with this size because the market is small. Access is one of the few British-designed brands that takes compact growing seriously — their aluminium profiles are thicker than what you'd find on imported mini greenhouses at this price, and toughened safety glass comes as standard rather than a paid upgrade. I've turned down cheaper 1ft models from other suppliers because the glazing clips were weak and the frames flexed too much. These three Access models have been reliable sellers for us since we started stocking them, and our return rate on this range is under 2% — which tells me customers are happy with what arrives.
— Matt, Co-Founder of Greenhouse Stores (16 years in the greenhouse industry)🔧 Matt's Installation Tip: Mounting a 1ft Lean-To on a Narrow Wall Strip
With a 1ft wide lean-to, your biggest challenge is keeping rainwater from pooling behind the frame. Because the structure is so shallow, even a small amount of water running down the house wall can sit against the back of the greenhouse and cause damp issues over time. My advice: before you mount the frame, apply a bead of exterior-grade silicone along the top junction where the greenhouse meets the wall, then fit a simple aluminium Z-flashing strip (around £10–£15 from any builders' merchant) to direct water over the front of the greenhouse rather than behind it. For the base, a single row of paving slabs is usually enough — you don't need a full concrete pad for something this compact. Just make sure the slabs are dead level, because even 3mm of tilt across a 1ft width will cause the lid or panels to bind when opening.
Delivery and Assembly
All three 1ft lean-to models are held in stock and ship with free UK mainland delivery within 7–10 working days. Assembly is straightforward — most customers finish in 45–90 minutes with a drill, spirit level, and a basic spanner set. The toughened glass panels are pre-cut and slide into the aluminium channels, so you don't need to handle any fragile sheets. Wall fixings are included in the box.
If you'd rather not assemble it yourself, our nationwide installation service covers mini and lean-to greenhouses. Call us on 0800 098 8877 for a quote based on your postcode.
Planning Permission
A 1ft wide lean-to greenhouse does not require planning permission in the vast majority of cases. All models in this category are well under the 2.5m height limit for structures within 2m of a boundary, and their footprint is so small they fall comfortably within UK permitted development allowances. The exception is if your property is listed, in a conservation area, or has had its permitted development rights removed — contact your local authority if you're unsure.
Need a Different Size or Specification?
If 1ft is too narrow, browse our 2ft wide lean-to greenhouses for more growing depth. Most ranges are also available in custom configurations. Learn more about our bespoke options.
Call us on 0800 098 8877 for your Free Quote!
Related Categories
Browse more options that might suit your space:
- All Lean-To Greenhouses — models from 1ft to 8ft wide, starting from £219.
- 2ft Wide Lean-To Greenhouses — the next step up in growing depth, from £219 to £1,599.
- Mini Greenhouses — compact growhouses, cold frames, and freestanding structures for small gardens.
- Access Mini Greenhouses — the full Access range including wider models and cold frames.
- Greenhouse Accessories — shelving, auto-vents, heaters, and propagation trays for compact lean-tos.
1ft Wide Lean-To Greenhouse FAQs
What is the narrowest lean-to greenhouse you can buy?
The narrowest lean-to greenhouses available in the UK are 1ft (approximately 350–400mm) deep. We stock three models at this width — all manufactured by Access with toughened safety glass and aluminium frames. They fit against any solid wall and occupy less floor space than a standard kitchen bin. If you need something slightly wider, our 2ft wide lean-to range starts from £219.
Can I use a 1ft lean-to greenhouse for growing tomatoes?
Not really — 1ft of depth isn't enough for full-sized tomato plants, which need at least 30–40cm of lateral space per plant. A 1ft lean-to is better suited to herbs (basil, thyme, rosemary, parsley), seed starting in propagation trays, and overwintering compact potted plants. If tomatoes are your main goal, look at our 2ft wide lean-to models where you'll have enough room for a single row of grow bags.
Do 1ft lean-to greenhouses need a concrete base?
No, a full concrete base isn't necessary for something this compact. A single row of paving slabs on levelled, compacted ground is sufficient. The slabs must be completely level — even 3mm of unevenness across a 1ft width can cause panels and lids to bind. Place the slabs so they extend about 25mm beyond the greenhouse footprint on all sides to provide a stable, drip-free edge.
Will a 1ft lean-to greenhouse keep plants frost-free in winter?
In most of southern and central England, yes — without any heating. The house wall behind the lean-to radiates 2–3°C of background heat, which is usually enough to prevent frost damage on mild winter nights (down to about -3°C outside). In colder regions or during prolonged hard frosts, a small 40–60W tubular heater (around £15–£25) will keep the interior above freezing. Running costs are typically £8–£15 per winter season for a 1ft model, since the volume of air you're heating is very small.
How long does a 1ft lean-to greenhouse take to assemble?
Between 45 and 90 minutes for one person. The toughened glass panels are pre-cut and slot into aluminium channels — no silicone or putty required. You'll need a drill for the wall fixings (masonry anchors are included), a spirit level to check the base, and a 10mm spanner for the frame bolts. The Herb House model is the quickest to assemble at around 45 minutes. The Westminster lean-to takes slightly longer due to its taller frame.