Vegetables that grow in shade: what to plant where the sun does not reach

Almost every South African garden has a shady half. A north wall, a big old jacaranda, a neighbour's double storey that went up two years ago, a covered stoep that keeps the sun off the whole eastern side. People look at that space and write it off for growing food, then squeeze a few tomatoes into the one bright corner and wonder why the harvest is so small.

The truth is more encouraging. Shade does not stop you growing vegetables, it just changes which ones. The rule underneath all of this is simple enough to remember for the rest of your gardening life. If you eat the leaf or the stem, shade is workable. If you eat the fruit, it is not. Everything below is really just that rule with the details filled in.

Work out what kind of shade you actually have

Shade is not one thing. There is dappled shade under a tree with an open canopy, where bright light comes through in moving patches all day and plants do surprisingly well. There is morning sun and afternoon shade, which is the best kind for greens in this country because they get useful light while it is cool and are protected when it is fierce. There is afternoon sun only, which is hotter and harsher than it sounds. Then there is deep shade against a south wall or under a dense evergreen, where you are honestly better off with ferns.

Go out and count the hours. Look at the space at eight, at eleven, at two and at five, and write down whether direct sun is falling on it. Do this in the season you plan to plant, because a spot that is shaded by the roof in midsummer can catch four hours of low winter sun. That single afternoon of observation is worth more than any planting chart.

Three to four hours is the honest minimum

Most vegetable advice talks about full sun meaning six to eight hours, and that number is real for fruiting crops. For leafy crops it is generous. Lettuce, spinach and chard will grow properly on three to four hours of direct sun plus decent ambient brightness for the rest of the day, and in a Gauteng summer they will actually be better for it, because full sun sends lettuce straight to seed and turns spinach bitter and tough.

Below about three hours the plants keep growing but they stretch, the leaves thin out, and the harvest stops being worth the water. That is the point where we would suggest a container you can shift rather than a bed you cannot. The Royal Horticultural Society's grow your own vegetables section is useful for spacing and timing, and NC State Extension's chapter on vegetable gardening goes into the light requirements crop by crop.

Leafy greens are the reliable crop

This is where a shady garden genuinely wins. Loose leaf lettuce, spinach, Swiss chard, kale, rocket, mustard greens, pak choi and mizuna all crop well in partial shade and several of them prefer it once the temperature climbs. Chard is the workhorse, because one planting keeps producing for months if you harvest the outer leaves and leave the crown alone. Rocket in shade is milder and less likely to bolt in a week.

Sow little and often rather than all at once. A short row every three weeks gives you a rolling supply instead of a glut followed by nothing, and in a shaded spot the plants grow slower so the sowings overlap comfortably. The RHS guide to growing lettuce is good on this, and it is worth noting how often it mentions shade as a positive rather than a compromise.

Herbs that do not sulk in half sun

Mint is the obvious one and it is genuinely happier out of the full afternoon glare, staying softer and less woody. Parsley crops well on four hours and holds better than it does in blazing sun. Coriander is the big win, because in full Highveld sun it bolts almost immediately and in partial shade you get weeks of leaf instead of days. Chives, chervil and lemon balm all cope.

The Mediterranean herbs are the exception. Rosemary, thyme, oregano and sage all want sun and sharp drainage, and in shade they grow soft, leggy and prone to mildew, with far less flavour in the leaf. If those are the herbs you actually cook with, put them in a pot in the brightest place you have. Our guide to easy herbs in pots sorts out which want what.

Spring onions, radishes and peas

Spring onions are quietly one of the best shade crops. They take up almost no room, they are ready in weeks, and they do not need the light that a bulb onion does because you are not asking them to swell. A narrow trough of spring onions by the kitchen door will get used constantly.

Radishes will crop in four to five hours, though in less light they put more energy into leaf and take longer to form a root, so give them space and pull them young. Peas and mangetout are worth trying against a bright wall in dappled light, because they flower and set pods in cooler conditions and a lighter crop of fresh peas is still a crop. Illinois Extension's vegetable growing pages are a sensible reference for spacing and timing on all three.

What will not work, and we would rather say so

Tomatoes, peppers, chillies, brinjals, cucumbers, pumpkins, butternut, beans for drying and mealies all need six hours of direct sun as a minimum, and most of them want more. You can grow the plant in less. It will be tall, pale and green, and it will flower thinly and set almost nothing, and by February you will have a large leafy thing and three sad tomatoes.

There is no trick that fixes this, and anyone selling you a shade tomato variety is stretching the truth. If fruiting crops matter to you, find the sunniest two square metres you have, even if it is the driveway edge or the top of a wall, and put them there in pots. Everything else can live in the shade.

Pots let you chase the light

This is the real reason we keep pushing containers for shady gardens. A bed is where it is. A pot can start the season on the eastern side where the spring sun reaches, move to the shadier western corner when December turns brutal, and come back again in autumn. You are no longer at the mercy of one fixed patch of light.

Depth matters more than width for most of these crops. Leafy greens are shallow rooted and are happy in twenty centimetres of soil, so a long trough suits them perfectly and gives you a proper row rather than a cluster. The Curo trough is the shape we recommend most for cut and come again greens, and the longer sizes cover a full run along a wall. If the spot is genuinely dim, our notes on planting a shade container go into the combinations that work.

Damp shade brings problems of its own

A shaded pot dries out far slower than one in full sun, which sounds like a gift and turns into a trap. Soil that stays saturated pushes air out of the root zone, roots start to rot, and you get the classic shade garden trio of downy mildew, damping off in seedlings and a healthy population of snails living under the rim.

Water less often but properly when you do, and check the soil with a finger instead of watering on a schedule. Use a mix that drains, because heavy garden soil in a shaded container stays wet for days, and Bark Outdoor Potting Soil holds enough air to keep roots working. Space plants a little wider than the packet says so air moves between them, and go out with a torch after rain if the snails are winning. Our piece on watering outdoor potted plants covers how to judge this by feel rather than by habit.

Feeding a shade crop differently

Plants in lower light photosynthesise less, so they use less nitrogen and they use it more slowly. Feeding a shaded container the way you would feed a tomato in full sun produces soft, sappy growth that aphids find irresistible and that flops at the first wind. Half strength, half as often, is the right instinct.

Start with good compost worked into the mix rather than relying on liquid feed later. Harvest regularly too, because cutting the outer leaves of chard or lettuce every few days keeps the plant producing new growth instead of settling into maturity and going to seed. If you are new to this, our beginner's guide to vegetable gardening and the fuller guide to growing food in pots together cover the whole year.

A shaded garden will never give you a bumper tomato harvest and it does not need to. Salad leaves and greens you pick five minutes before supper are worth more than a crop you grew because a book said you should, and they are the easiest food there is to grow. Our herb and vegetable pot range has the depths and lengths that suit them, and they travel with the light.

Frequently asked questions

How many hours of sun do vegetables need in shade?

Leafy crops manage on three to four hours of direct sun a day. Quick roots like radish want four to five. Fruiting crops such as tomatoes and peppers need at least six and will not produce properly with less.

Which vegetables grow best in a shady South African garden?

Lettuce, spinach, Swiss chard, kale, rocket, Asian greens, spring onions, parsley, coriander and mint. Most of them actually crop better out of the full summer sun because they bolt more slowly.

Can tomatoes grow in shade?

Not usefully. The plant will grow tall and leafy but it will set very few fruit. If you want tomatoes, use pots in the brightest spot you have rather than trying to make a shaded bed work.

Do pots help in a shady garden?

Yes, because you can move them. A pot can follow the light through the seasons, which a fixed bed cannot, and a trough gives shallow rooted greens the row length they like.

Why do my shade vegetables get mildew?

Shaded soil stays wet longer and air moves less between plants. Water only when the top of the soil is dry, space plants a little wider than usual, and use a potting mix that drains freely.