How to Grow Parsley at Home in the UK

Parsley is one of those herbs you reach for without thinking — a scattering over new potatoes, a handful in a tabbouleh, the green note in a stock or a sauce. It's well worth a corner of the garden or a pot by the back door, because shop-bought parsley wilts in days while a growing plant keeps giving for the best part of a year. The only catch is the seed, which is famously slow to come up. Get past that one hurdle and parsley is hardy, generous, and almost trouble-free in the UK climate.

This guide covers the lot: choosing between flat-leaf and curly, why the seed tests your patience, where to grow it, how to sow and care for it, and how to keep cutting leaves from spring right through a mild winter. If you're brand new to growing, parsley sits comfortably alongside the other easiest crops for beginners once you know the germination trick.

Why grow parsley

Parsley earns its place for three plain reasons: you use it constantly, it's properly hardy, and one plant produces a remarkable amount of leaf.

It's a kitchen staple in a way few herbs are. Flat-leaf parsley is the backbone of so many dishes — from a gremolata to a simple butter sauce — that having it a few steps from the kitchen genuinely changes how you cook. Cut what you need, when you need it, and you skip the soggy supermarket bunch entirely.

It's also tougher than people expect. Parsley shrugs off the cold and will stand through most UK winters with little more than a fleece on the hardest nights. A plant sown in late spring will often give you fresh green leaves in December and January, when almost nothing else in the garden is worth picking. That out-of-season supply is one of the best arguments for growing your own.

And it's productive. A single healthy plant, picked correctly from the outside in, regrows steadily for months. Three or four plants are plenty for a family that cooks regularly. It's an ideal candidate for a mixed bed, a container of herbs, or a deep pot on the kitchen sill. If you're starting a plot from scratch, it slots neatly into the planning when you start a vegetable garden, happy in the spots that are a little too shady for tomatoes.

Flat-leaf vs curly

There are two main types of parsley, and the choice is mostly about flavour and what you cook.

Flat-leaf (Italian) parsley has flat, deeply cut leaves and a stronger, cleaner, more peppery flavour. It's the cook's choice — better in sauces, salads, dressings and anywhere the parsley flavour should sing. Look for varieties such as 'Italian Giant' or 'Gigante d'Italia', which crop heavily and stand well. Flat-leaf is generally a touch more vigorous and slightly hardier than curly, too.

Curly parsley has the familiar tight, frilly, deep-green leaves. The flavour is milder and the texture coarser, which is why it's so often used as a garnish, but it's a perfectly good kitchen herb in its own right — and many people prefer its look in the garden, where it makes a neat, dense little mound. 'Moss Curled' is the standard reliable variety. Curly parsley also makes a tidy edging plant and is a favourite with children, who like its texture — it's a good one to hand over when you're getting kids growing.

If you're not sure, grow a few of each. They need exactly the same conditions and care, so there's no extra work in hedging your bets. Most growers who cook a lot end up favouring flat-leaf for the kitchen and keeping a curly plant or two for the garnish and the looks.

There's also a third type worth a mention: Hamburg parsley, grown for its parsnip-like root rather than its leaves. It's a different beast and a niche crop — for everyday cooking, stick to flat-leaf or curly.

The germination challenge

Here's the honest truth about parsley: the seed is slow, and that catches a lot of beginners out. It's not unusual for parsley to take three to five weeks to appear, which feels like an age when other herbs are up in a week. Plenty of people assume their sowing has failed and dig it over, just before the seedlings would have shown.

The cause is a natural chemical in the seed coat — a germination inhibitor (furanocoumarins) that has to break down before the seed can sprout. In the wild this stops the seed germinating at the wrong moment; in your seed tray it just means a long wait. Cold or dry compost makes it slower still.

The good news is that you can speed things up considerably, and patience covers the rest. A few simple steps make a real difference:

• Soak the seed overnight in lukewarm water before sowing — this starts to wash out the inhibitor.
• Keep the compost warm. Parsley germinates best at around 18–20°C, so a propagator or a warm windowsill beats a cold spring greenhouse.
• Never let the surface dry out. The seed needs consistent moisture through the whole long germination period — a dry patch resets the clock.
• Sow fresh seed. Parsley seed loses viability quickly, so use seed that's a year old at most.

Even with all that, give it a full month before you give up. There's a fair bit more you can do, and a more detailed walk-through of the whole process, in our guide to getting parsley to germinate — well worth a read if your first sowing has tested your nerve.

Where to grow

Parsley is easy-going about position, which is part of its charm. It will grow in full sun or partial shade — and in the warmer half of the UK a spot with a little afternoon shade actually suits it, as it keeps the soil cooler and moister and helps stop the plant running to seed in a hot spell. A lightly shaded corner that's no good for sun-lovers is often perfect for parsley.

What it really wants is rich, moist, free-draining soil. Parsley is a hungry, thirsty herb, so dig in plenty of well-rotted garden compost or manure before sowing or planting. If your ground is poor or heavy, a season of improving your soil with organic matter pays off handsomely here. The aim is soil that holds moisture without turning to a puddle.

One thing that surprises people: parsley has a long taproot, like its relative the carrot. That means it resents having its roots disturbed once it's growing, and it wants depth. In a bed that's no problem. In a container, choose a deep pot — at least 20–25cm deep — rather than a shallow trough, so the taproot has room to run down. A cramped, shallow pot leads to a stunted plant that bolts early. For more on getting the most from pots, our guide to growing food in containers covers compost, drainage and watering in detail.

Sowing

You can sow parsley from late winter to midsummer, indoors or out. Because of the slow germination and the deep taproot, how you sow matters as much as when.

Sowing indoors (February–April). Sow into deep modules or small pots of moist seed compost rather than a shallow tray, so you can plant out the whole rootball later without disturbing the taproot. Cover the seed lightly — about 1cm deep — firm gently, and keep at 18–20°C. Keep the compost evenly moist and be patient. Once seedlings are up and have a couple of true leaves, harden them off and plant out from April, spacing them about 20cm apart.

Sowing outdoors (April–July). Wait until the soil has genuinely warmed — usually April in the south, May further north. Sow thinly into a shallow drill about 1cm deep, water the drill first if it's dry, and label it clearly so you don't forget what's there during the long wait. Thin the seedlings to 15–20cm apart once they're large enough to handle. Outdoor sowings are slower to germinate in a cold spring, so don't rush them; a warm-soil sowing in May often overtakes a chilly one in March.

For a steady supply, you can sow a second batch in June or July for plants that will crop into autumn and stand over winter. The planting calendar is handy for pinning your sowings to UK dates and reminding you when the next batch is due.

The patience really is the whole game with parsley sowing. Sow it, keep it warm and damp, leave the label in, and resist the urge to disturb it. The leaves will come.

Care

Once parsley is up and growing, it's an undemanding plant — but it has two firm dislikes: drying out, and going hungry.

Watering is the big one. Parsley must never dry out at the roots. A plant that's allowed to wilt repeatedly turns bitter, stops producing fresh leaf, and is far quicker to run to seed. Water regularly and deeply, especially in summer and especially in pots, which dry out fast. A morning watering in warm weather keeps the plant cropping well. Mulching the soil around bed-grown plants with compost helps lock in that moisture.

Feeding keeps the leaves coming. Parsley is a leafy herb, so it appreciates nitrogen. Work compost in before planting, and through the growing season give plants a feed every couple of weeks with a balanced liquid feed — a general-purpose or seaweed feed is ideal. Container plants especially benefit, as nutrients wash out of pots quickly.

Beyond that, keep the area weeded so the parsley isn't competing for water and food, and remove any tatty or yellowing outer leaves to keep the plant tidy and productive. That's genuinely most of the care it needs.

Bolting in year two

It helps to understand parsley's life cycle, because it explains why even a perfect plant eventually gives up. Parsley is a biennial: it spends its first year making leaves, then in its second year it switches to flowering, sets seed, and dies. That second-year flowering is bolting — the plant sends up a tall stem, the leaves turn coarse and bitter, and leaf production all but stops.

This is completely normal and nothing you've done wrong. A plant sown in spring will give you good leaf through that year and a mild winter, then run to seed the following spring or early summer. Once it bolts, the kitchen-quality leaf is over.

There are two sensible responses. The first, and the one most growers go for, is simply to sow fresh each year — treat parsley as an annual, start a new batch every spring, and never let it reach the bitter stage. The second is to let one plant bolt and flower deliberately: parsley's flat flower heads are loved by hoverflies and other beneficial insects, and it's a genuinely useful pollinator plant in a wildlife-friendly garden. Leave it to flower in a corner and you may even get self-sown seedlings the following year for free.

Heat and drought can push a first-year plant to bolt prematurely, which is the other reason steady watering and a little summer shade matter so much. But sooner or later, biology wins — so the rule of thumb is straightforward: sow fresh every spring and you'll never be short of good parsley.

Harvesting

Parsley is ready to start cutting roughly 10–12 weeks after sowing, once the plant has made a decent clump of leaves. Harvest it correctly and a single plant keeps producing for months.

The method is cut-and-come-again from the outside in. Always take the outer stalks first, cutting each whole stem right down at the base rather than nipping leaves from the top. This leaves the young central growth to carry on, and the plant keeps pushing new stems from the middle. Picking from the outside also keeps the plant tidy and stops the old outer leaves going yellow.

Pick little and often — regular cutting actually encourages fresh growth, so a plant in steady use stays younger and more productive than one you leave alone. Don't be shy: take what you need, and the plant will replace it. Harvest in the morning when the leaves are at their freshest if you can.

For storing a glut, parsley freezes well — chop it and freeze it in ice-cube trays with a little water, or freeze whole sprigs in a bag and crumble them straight into cooking. It can be dried too, though it keeps far more flavour frozen. There's a fuller rundown of methods in our guide to drying and storing herbs.

Windowsill growing

You don't need a garden to grow parsley — it does very nicely indoors, and a bright kitchen sill puts fresh leaves right where you cook. The keys are the same as outdoors, scaled to a pot: a deep container for that taproot (a tall pot rather than a shallow one), a good multipurpose compost, plenty of light, and consistent watering so it never dries out.

A south- or west-facing windowsill gives the best light; in the darker months a spot in the brightest window keeps a plant ticking over, and an autumn-sown pot brought indoors can give you green leaves all winter. Feed it occasionally, turn the pot now and then so it grows evenly, and pick from the outside as you would outdoors.

It's a gentle introduction to growing indoors generally — the same approach works for a whole windowsill herb garden. For the full method, pots, light and watering tailored to parsley specifically, see our guide to growing parsley on a windowsill.

Once you've got the hang of the germination, parsley is genuinely one of the most rewarding herbs to keep on hand. A little kit makes the slow seed and the deep-pot needs much easier to manage:

Problems

Parsley is one of the more trouble-free herbs, but a couple of issues are worth knowing about — and the family it belongs to gives a clue to the main one.

Carrot root fly. Parsley is a member of the carrot family (Apiaceae), and that means it can attract carrot root fly, whose larvae tunnel into the roots and can weaken or kill a plant. You'll see the leaves take on a reddish, stunted look. The fly is a low-flying, scent-led pest, so the best defence is a barrier of fine insect mesh or a 60cm-high fleece "fence" around the crop, plus not growing parsley in the same spot as carrots year after year. It's far more of a problem for the root-grown Hamburg parsley than for leaf parsley, but worth bearing in mind.

Aphids (greenfly). Like most leafy plants, parsley can pick up aphids clustering on the soft new growth, particularly on stressed or indoor plants. A blast of water, a wipe with soapy water, or simply squashing small colonies usually deals with them. A garden that welcomes hoverflies, ladybirds and lacewings — exactly the beneficial insects parsley's own flowers attract — tends to keep aphids in check naturally.

Yellowing or bitter leaves. This is almost always down to one of three things: the plant drying out, going hungry, or starting to bolt in its second year. Check your watering and feeding first; if the plant is sending up a flower stem, it's simply reached the end of its useful life and it's time to sow a fresh batch.

Slow or no germination. Not really a problem at all, just parsley being parsley — see the germination section above and our dedicated guide if your seed is taking its time.

Get the watering steady and sow fresh each spring, and parsley will reward you with more leaf than almost any other herb for the space it takes. It's a small bit of patience at the start for a long, generous season of cutting — and once you've grown your own, the limp supermarket bunch never quite measures up.