A Beginner's Guide to Growing Herbs in Small Spaces

Why herbs are the perfect small-space crop

You do not need an allotment, a garden or even a balcony to grow something genuinely useful. A kitchen windowsill, a doorstep, a shared courtyard or a single hanging basket can all produce handfuls of fresh herbs from spring right through to autumn. Herbs are forgiving, they are happy in modest containers, and most of them will keep cropping for months if you treat them reasonably well.

There is a quiet satisfaction in snipping a few leaves of basil over a bowl of pasta, or tearing mint into a jug of water on a warm afternoon. And in a UK climate where shop-bought herb pots often wilt within a week, growing your own is both cheaper and kinder on your nerves. This guide covers the basics: light, pots, compost, watering and the herbs most likely to reward a beginner.

Find your light before you buy anything

Light is the single biggest factor in success, so spend a day or two watching your space before you spend any money. Most culinary herbs want at least four to six hours of decent daylight. A south-facing windowsill is ideal; east-facing is perfectly workable; a north-facing sill will struggle with basil but will manage parsley, mint, chives and chervil.

In the UK, our grey winters are the real challenge. From October to March, growth slows dramatically and some herbs die back entirely. Treat winter as a pause rather than a failure, and plan to sow or buy fresh plants again in spring. If your only space is a balcony, remember that wind dries compost out fast and can snap tall stems — a corner sheltered by a wall or a rail-height barrier makes a real difference.

Turn pots a quarter-turn every few days. Herbs lean towards the light, and regular turning keeps them upright and bushy rather than stretched and lopsided.

Pots, compost and drainage

Size matters more than style. A 20–25cm pot with drainage holes is a sensible minimum for basil, parsley or mint; a 30cm pot will give you more room to work with and holds moisture far better on hot days. Terracotta looks lovely and breathes well, but dries out quickly; glazed ceramic and plastic hold moisture longer and are the easier option for beginners.

Always use a saucer or tray underneath so you do not stain a windowsill or annoy a neighbour on the balcony below. Fill with a peat-free multipurpose compost — most garden centres and supermarkets now stock it — and mix in a small handful of perlite or grit if the mix feels heavy and claggy. Never use soil dug from the garden in a small pot: it compacts, drains poorly and often brings weeds and pests with it.

One crucial rule: give mint its own pot. It spreads aggressively by underground runners and will smother everything beside it within a season.

Six herbs worth starting with

• Basil — loves warmth and sun, hates cold and draughts. Sow in late spring, pinch out the growing tips to keep it bushy, and water in the morning rather than the evening.
• Mint — almost indestructible, happy in partial shade, and ideal in a slightly damp corner. Keep it contained and pick leaves regularly.
• Parsley — slow to germinate (three to four weeks is normal) but then crops generously for months. Flat-leaf types have the better flavour.
• Chives — perennial, neat, and useful for snipping over eggs and potatoes. Cut them back hard and they will regrow.
• Thyme — a Mediterranean plant that wants sharp drainage and less water than the others. Add extra grit to the compost.
• Coriander — fast-growing and quick to bolt in heat. Sow small amounts every few weeks for a continuous supply.

A watering and feeding routine that actually works

More small-space herbs are killed by kindness than neglect. Overwatering drowns roots and encourages fungus gnats; underwatering turns leaves crisp. Check the compost with a finger before watering — if it is damp 2cm down, wait. If it is dry, water thoroughly until it runs out of the bottom, then empty the saucer.

In summer you may water daily, sometimes twice on a hot balcony. In winter, once every week or two is often plenty. Water in the morning where you can, and avoid splashing the leaves.

Feed lightly. A diluted liquid plant food every fortnight during the growing season is enough; too much nitrogen gives you leafy plants with very little flavour. Stop feeding altogether in winter.

Harvesting, troubleshooting and sharing the surplus

Harvest regularly — it is the best thing you can do for the plant. Cutting the top few centimetres of a stem encourages branching and gives you more to pick next time. Never strip a plant bare; take a third at most and leave the rest to recover.

Greenfly, whitefly and the occasional slug are your main visitors. A firm jet of water from a spray bottle handles most aphids, and a weak solution of washing-up liquid in water works on stubborn patches. Deal with problems early, before they spread to neighbouring pots.

Finally, think beyond your own sill. Herbs are one of the easiest things to share — a few spare chive divisions on a doorstep, a pot of mint outside a communal entrance, a swap with a neighbour who has grown too much rosemary. In streets where gardens are small or non-existent, a shared herb planter can turn a bare wall or a neglected corner into somewhere people pause, talk, and help themselves to a sprig. That is community improvement at its simplest, and it starts with one pot and a windowsill.