How to grow plants on a UK balcony, roof terrace or tiny patio: checking weight and rules, working with sun, shade and wind, choosing containers and compost, what to grow, watering, and keeping neighbours and buildings safe.
You don't need a garden to grow flowers, herbs or even vegetables. Balconies, window ledges and small patios can be surprisingly productive. The key is working with your space's limits: weight, wind, light and water.
1. Check the rules and the weight
- Read your lease or tenancy agreement. Some ban planters, fixings or anything on balconies. Ask your landlord or managing agent if unsure.
- Think about weight: wet compost is heavy, and large planters filled with soil can weigh far more than you'd expect. Put the heaviest pots near walls or over supporting structure rather than at the edge, and ask the building manager about load limits if you're planning large planters.
- Fire safety: many blocks of flats ban barbecues and some materials on balconies. Avoid storing flammable items, and follow your building's fire safety rules.
- Drainage: don't let water run off onto neighbours below. Use saucers or trays, and keep drains clear.
2. Work out your light
Watch how many hours of direct sun your space gets in summer:
- South- or west-facing, six hours or more: tomatoes, chillies, Mediterranean herbs such as rosemary, thyme and sage, and sun-loving flowers like lavender and geraniums.
- East-facing, a few hours of morning sun: salad leaves, strawberries, mint, parsley, fuchsias and many bedding plants.
- North-facing or shaded: ferns, hostas, heucheras, ivy, and leafy salads in summer.
3. Deal with wind
Balconies, especially high ones, can be windy, which dries plants out and breaks stems. Choose compact, tough plants, use heavy-based pots, and avoid tall plants that act as sails. A securely fixed screen, if permitted, can soften wind. Make sure nothing can blow off.
4. Containers and compost
- Every pot needs drainage holes.
- Bigger pots dry out more slowly; tiny pots need watering constantly in summer.
- Lightweight plastic, fabric or fibreglass pots help with weight limits.
- Use peat-free multipurpose compost; peat extraction damages important habitats. Add slow-release fertiliser or feed regularly in summer.
- Railing planters and wall pockets use vertical space, but must be fixed securely and on the inside of railings.
5. What to grow
- Easy edibles: salad leaves, radishes, herbs, strawberries, dwarf beans, cherry tomatoes and chillies.
- For pollinators: lavender, thyme, marjoram, single-flowered dahlias and cosmos. The RHS Plants for Pollinators lists help.
- Year-round structure: small evergreens such as dwarf conifers or box alternatives, plus spring bulbs.
6. Watering
Containers dry out quickly, often needing water daily in hot weather. Water thoroughly until it drains, early morning or evening. Self-watering pots, water-retaining mulch on top of compost, and grouping pots together help. Collect rainwater if you can. In winter, water much less and raise pots on feet to prevent waterlogging.
7. Seasonal tips
- Spring: sow salads and herbs; plant summer bedding after the last frost.
- Summer: water and feed regularly; deadhead flowers.
- Autumn: plant spring bulbs and winter pansies.
- Winter: protect tender plants from frost; check fixings after storms.
Frequently asked questions
Can I grow vegetables on a north-facing balcony?
Leafy salads, herbs such as mint and parsley, and some soft fruit will cope with shade.
How do I stop pigeons?
Netting or deterrents can help; check your building's rules, and don't feed them.
Do I need special compost for containers?
A good peat-free multipurpose compost works for most plants. Add grit for herbs and succulents, and refresh the top few centimetres each spring for permanent plantings.
Sources and further reading
Facts checked on 20 October 2026. Spotted an error? Tell us and we will correct it.