When to Sow Vegetables: A Seasonal Planting Guide

When to sow vegetable seeds

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When to Sow Vegetables

​Gardening is an act of hope and a dialogue with time. It requires us to understand the rhythm of the seasons, the temperament of the soil, and the patience inherent in watching life unfold from a tiny seed. Sowing vegetables is not merely a task of agriculture; 

it is a choreography of nature where timing is everything. To sow is to make a promise to the future. This guide explores the seasonal milestones of the vegetable calendar, offering a curated path through the sowing year, from the awakening of spring to the golden descent of autumn.

March

​March is the month of awakening. The earth shakes off its winter slumber, and the light changes quality, becoming longer and more insistent. It is a time of anticipation, where the soil begins to warm, inviting the first brave seeds.

Spring Onion

These are the heralds of the salad season. Sowing them now ensures a steady supply of sharp, fresh green stems by early summer. They are resilient and require little space, making them perfect for filling gaps.

Lettuce

​Sown under cover or in a sheltered spot, early lettuce offers the promise of crisp, tender leaves. It is a crop of immediacy, quick to germinate and forgiving of the lingering chill.

​Beetroot

​While often thought of as a root crop, sowing beetroot now allows for the harvesting of tender young leaves for salads, followed by the sweet, earthy roots later in the season.

​Leeks

​These stalwarts of the winter kitchen begin their long journey now. Started in seed beds, they will stand through the darkest months, a testament to slow, steady growth.

​Parsnip

Parsnip seeds are notoriously slow to germinate and require a long growing season. Getting them in the ground now gives them the time they need to develop their sweet, nutty flavour, which is only enhanced by future frosts.

​Cabbage

​Early varieties sown now will provide fresh, crunchy hearts by summer, bridging the gap between the stored winter vegetables and the abundance of the warm season.

April

​April brings a shift in momentum. The risk of hard frost recedes, and the soil becomes workable and crumbly. It is the busiest month for the gardener, a time of industrious optimism.

Carrot

​The classic root vegetable demands light, stone-free soil. Sowing in April avoids the worst of the carrot fly while capitalizing on the warming earth to encourage straight, uniform roots.

Beetroot

​A second sowing ensures succession. As the light intensifies, these seeds will germinate rapidly, providing a reliable crop that stores the energy of the spring sun.

Onion

​Whether from sets or seeds, onions are the backbone of the kitchen. Planted now, they will swell as the days lengthen, ready to be cured and stored for winter stews.

Chard

​With its architectural stems and robust leaves, chard is as beautiful as it is edible. It is a cut-and-come-again crop that offers a continuous harvest of mineral-rich greens.

Kale

​This nutritional powerhouse starts its life now. Robust and hardy, kale sown in April will establish deep roots, preparing it to provide sustenance well into the following winter.

Potato

​The ritual of burying seed potatoes is a gardener's rite of passage. Whether earlies or maincrops, they represent buried treasure, turning soil and sun into sustenance.

May

​May is the gateway to summer. The air softens, and the threat of frost usually vanishes, allowing tender crops to take their place in the garden. It is a time of lush growth and rapid expansion.

Sweet Corn

​These sun-worshippers need warmth. Sown now, they will race upwards, their tasseled heads eventually capturing the summer breeze to pollinate the sweet kernels below.

Squash

​From courgettes to pumpkins, the cucurbit family demands rich soil and space. They are the sprawlers of the garden, turning sunlight into heavy, nutritious fruits.

Swede

​A humble but essential winter staple. Sowing swede in May gives it the long, cool growing season it prefers, resulting in dense, flavourful roots perfect for mashing.

Brussels Sprouts

These slow-growing brassicas need a long lead time to form their tight, nutty buttons. Planting them now ensures they are tall and strong before the winter winds arrive.

French Beans

​Whether dwarf or climbing, these beans are a delight. They dislike cold wet soil, so May is their moment. They offer a delicate texture and flavour that is the essence of summer dining.

Parsley

​This essential herb can be stubborn to start. Warm May soil encourages germination, providing lush, flat, or curly leaves that lift the flavour of any dish.

June

​June is the month of light. The days are at their longest, and the garden is in full swing. Sowing now is about succession and thinking ahead to the autumn harvest.

Sprouting Broccoli

​A crop for the patient gardener. Sown now, it will stand through winter to produce purple or white spears in the hungry gap of early spring, a welcome fresh harvest when little else is growing.

​​Chicory

​For those who appreciate bitter, complex flavours, chicory is a must. Sowing in June allows the heads to form as the days shorten, blanching the hearts for winter salads.

Endive

​Similar to lettuce but with a wilder edge, endive thrives on the warmth. It adds texture and a sophisticated bite to summer salad bowls.

Calabrese

​This is the green-headed broccoli we know well. It grows relatively quickly, providing a nutritious harvest in late summer and autumn before the frosts arrive.

Cauliflower

​Sowing autumn varieties now ensures creamy white curds in October and November. They require fertile soil and moisture to produce their dense, sculptural heads.

Savoy Cabbage

With its crinkled, textured leaves, the Savoy is the king of winter cabbages. Sowing now gives it time to form the tight, hardy heads that withstand the cold.

July

​July brings the heat, and sowing becomes a balance of managing moisture and speed. It is a pivot point, looking towards quick crops and winter staples.

Chinese Cabbage

​These grow rapidly and prefer the shortening days of late summer, which prevent them from bolting. They offer a sweet, crunchy alternative to traditional cabbages.

Kohlrabi

An alien-looking vegetable that is surprisingly delicious. Quick to mature, July sowings will be ready before the cold sets in, offering a crisp, apple-like texture.

Winter Radish

​Unlike their small summer cousins, winter radishes like Mooli grow large and store well. They add a peppery punch to winter stir-fries and pickles.

Coriander

This herb has a tendency to bolt in heat, but sowing in July for an autumn harvest often yields better leaf production as the weather cools.

​Dill

​Essential for pickles and fish dishes. A July sowing ensures fresh feathery fronds just as the cucumbers and beetroots are ready for preserving.

Salad Leaf Mix

​Continual sowing of salad leaves ensures that the salad bowl remains full. Fast-growing varieties will be ready in weeks, maximizing the garden's output.

August

​August is a month of transition. While we harvest the summer bounty, we must also sow for the fading light. It is a time for swift crops and hardy oriental greens.

Pak Choi

​These Asian greens thrive in the cooling temperatures of late summer. They are fast, succulent, and perfect for steaming or stir-frying.

​Tatsoi

A rosette-forming green that is incredibly hardy. It can withstand cooler weather and provides a mild, mustardy flavour to autumn salads.

Salad Rocket

​The peppiness of rocket is intensified by the summer sun. August sowings provide a spicy kick to meals well into the autumn.

Turnip

​Fast-growing turnips sown now produce tender, golf-ball-sized roots that are sweet and delicious, unlike the woody specimens of old.

Spinach

​Spinach dislikes the heat of mid-summer but thrives in the cooler days of autumn. August sowings will provide tender leaves and can even overwinter for an early spring crop.

Radish

​A quick win for the impatient gardener. These can be squeezed into any empty space, providing a crunchy, colourful harvest in as little as four weeks.

September

​September is the twilight of the sowing year. The focus shifts to crops that grow fast or stand hardy against the coming winter. It is an act of preparation for the cold and a promise of green in the grey months.

Wild Rocket

More intense and slower growing than salad rocket, this perennial is hardy and will provide spicy leaves through the winter if protected.

Florence Fennel

A late sowing can produce small, tender bulbs before the hard frosts, offering a sweet, aniseed crunch.

Spring Cabbage

​The name is deceptive; these are sown now to overwinter as small plants, ready to burst into growth and provide the first greens of the New Year.

Garlic

​Planting garlic cloves in late September allows them to establish roots before the cold, ensuring a jump start in spring and large bulbs next summer.

​Mizuna

​A feathery Japanese green that is almost indestructible. It tolerates cold and wet, providing a mild, fresh taste in salads throughout the winter.

Mustard

Green or red giant mustard adds heat and colour to winter dishes. It grows rapidly and is a resilient final flourish to the sowing calendar.