Growing Herbs in Pots for a Compact Kitchen Garden

Why the Doorstep Beats the Vegetable Patch

Few things improve a plate of food as quickly as a handful of just-cut herbs, and few things ask for less room. If your smallholding is really a small garden, a yard behind the cottage, or a strip of gravel beside a back door, containers will still give you a kitchen garden. Put the pots where you will pass them several times a day — a sunny doorstep, a south-facing path, or a sheltered spot beside the back gate. Herbs grown within arm's reach of the kitchen get used; herbs at the bottom of the garden, however healthy, tend to be admired rather than eaten.

Containers also solve an awkward problem: the best culinary herbs dislike the same conditions. Mint will happily colonise a damp corner, while thyme and rosemary sulk in anything rich and wet. Separate pots let you give each one what it wants without digging up a border.

The Four Herbs That Earn Their Keep

Basil, mint, thyme and parsley will cover most of what a home cook reaches for. All four are straightforward in containers, provided you keep to a few basics.

• Basil — tender, fast-growing and happiest in a warm, sheltered spot out of cold wind. Keep it evenly moist and in full sun, and pinch out the growing tips to keep it bushy and leafy.
• Mint — vigorous to the point of thuggery, so give it a pot of its own, at least 30cm across. Keep it damp and cut it hard rather than picking leaf by leaf; it will crop from spring to the first hard frost.
• Thyme — a Mediterranean plant that wants gritty, free-draining compost and full sun, and hates sitting wet. A shallow terracotta pot on a warm wall suits it, and it will return each year with a light trim after flowering.
• Parsley — flat-leaved for flavour, curly if you prefer the look. It is a biennial, so sow fresh seed each spring; grow it in a deep pot to accommodate its long taproot.

Choosing Pots, Compost and Drainage

Size matters more than style. A pot of 20–30cm across holds enough compost to buffer against drying out on a hot afternoon; a tiny decorative pot will need watering twice a day in July and will still struggle. Terracotta looks lovely and dries faster; glazed or plastic pots hold moisture better. Drainage holes are essential, so add crocks or gravel if they are large, and stand pots on feet or bricks so water can escape. Empty saucers after rain — waterlogged roots will finish off thyme far faster than drought.

For compost, a peat-free multi-purpose mix suits basil, mint and parsley. For thyme and other woody herbs, stir in roughly a quarter by volume of horticultural grit or sharp sand. That small change makes the difference between a thriving plant and a sad, yellowing one.

Getting Them Off to a Good Start

You can raise herbs from seed or buy small plants, and most of us do a bit of both. Basil and parsley are easy from seed, sown indoors in March or April in a warm, light place and thinned so they are not crowded. Thyme is slower and erratic from seed, so a small plant or a division from a friend's clump is often the better bargain. Mint is almost always grown from a piece of root or a rooted cutting — never share its pot with anything else, or the mint will win.

When planting up, set each herb at the same depth it was growing before, firm the compost gently and water well. Keep new plants out of harsh midday sun for a week, then move them into place. If sowing direct into a pot outdoors, wait until late April or May, and cover the seed with only the thinnest layer of compost — most herbs need light to germinate.

Watering and Feeding Through the Season

Container herbs live or die by watering, and no two of these four want exactly the same.

• Basil and mint: keep the compost consistently moist, never bone dry and never soggy.
• Thyme: let the top centimetre dry out between waterings.
• Parsley: water regularly, especially in dry spells; it has shallow roots as well as deep ones.

Feeding is modest. A liquid tomato feed at half strength every fortnight through the growing season suits basil, mint and parsley. Thyme needs very little — overfeeding makes it soft, leggy and less fragrant. Check all the pots fortnightly for greenfly, and remove flower buds from basil and mint to keep the leaves coming.

Harvesting Well and Keeping the Supply Going

Frequent cutting makes for bushy plants, so pick often and pick properly. Take basil leaves from the top, cutting just above a pair of leaves so two new shoots form. Snip mint stems a few inches above the compost rather than stripping individual leaves. Harvest thyme with scissors, taking the soft new growth and leaving the woody stems alone. With parsley, cut outer stems at the base and the plant will keep producing from the centre.

Come autumn, decide which plants are worth bringing on. Mint and parsley can move to a cool, light windowsill and often crop on into winter. Thyme is hardy enough to stay outside across most of the UK, provided the pot is raised and the compost gritty. Basil fades with the first cold nights, so treat it as a seasonal pleasure or take cuttings in late summer to overwinter indoors. Refresh the compost and sow or buy fresh plants each spring, and the same handful of pots will keep your kitchen supplied year after year.