10 Edible Windowsill Plants
Grow your own food indoors. The 10 best edible plants for a sunny windowsill - herbs, salad leaves, microgreens, chillies, and more.
You don’t need a garden - or even a balcony - to grow some of your own food. A sunny windowsill is enough to keep you in fresh herbs, salad leaves, microgreens, and even chillies all year round. It won’t replace the supermarket, but a windowsill of edibles is genuinely useful, satisfying, and far fresher than anything in a plastic packet.
Here are the 10 best edible plants for a windowsill, honestly rated, plus the one thing that decides whether you succeed.
The One Rule: It’s All About Light
Edible plants are sun-hungry. Leaves, herbs, and especially fruiting crops need a lot of light to grow well. Your windowsill choice matters:
- South- or west-facing, 6+ hours of sun - you can grow almost everything here, including chillies and tomatoes.
- East-facing or moderate light - stick to leafy crops, herbs, and microgreens.
- Low light - even leafy crops struggle. A small grow light is the honest solution, and it lets you grow edibles anywhere, all winter.
If your windowsill is dim, or you want a reliable winter harvest, plan for a grow light from the start.
At a Glance: 10 Windowsill Edibles
| Plant | Difficulty | Speed | Light Needed |
|---|---|---|---|
| Microgreens | Very easy | 1-3 weeks | Moderate |
| Salad leaves | Easy | 3-5 weeks | Bright |
| Herbs | Easy-moderate | Ongoing | Bright |
| Spring onions | Very easy | Regrows fast | Moderate |
| Chillies | Moderate | Months | Very bright |
| Cherry tomatoes | Moderate | Months | Very bright |
| Radishes | Easy | 4 weeks | Bright |
| Pea shoots | Very easy | 2-3 weeks | Moderate |
| Garlic greens | Very easy | 1-2 weeks | Moderate |
| Mushrooms (kit) | Easy | 1-2 weeks | Low (no light!) |
The Fastest, Easiest Wins
Microgreens
The single best windowsill edible for a beginner. Microgreens are simply vegetable and herb seedlings (radish, broccoli, peas, mustard, sunflower) harvested tiny, days after germinating. Sprinkle seeds densely on a tray of soil, keep moist, and snip the seedlings with scissors in 1-3 weeks. Nutrient-dense, fast, foolproof, and they need only moderate light. Start here.
Pea Shoots
Sow dried peas thickly in a tray, and in 2-3 weeks you have sweet, crunchy pea shoots for salads and stir-fries. They’ll even regrow once after cutting. As easy as microgreens.
Spring Onions
Endlessly regrowing. Stand the white root ends of shop-bought spring onions in a little water or pot them in soil, and the green tops regrow within days - cut and repeat. Practically free food.
Garlic Greens
Plant a few garlic cloves in a pot of soil; the mild, chive-like green shoots are ready to snip in a week or two. Easy and quick.
The Useful Everyday Edibles
Herbs
A windowsill of herbs - basil, parsley, chives, mint, thyme - is the classic, most-used indoor edible garden. They want a bright spot; basil especially needs warmth and lots of light. (See our full guide to growing herbs indoors.)
Salad Leaves
Loose-leaf lettuces, rocket, mustard, and spinach grow well in a window box of soil and are cut-and-come-again - harvest the outer leaves and the plant keeps producing for weeks. Sow a little every couple of weeks for a steady supply.
Radishes
One of the fastest “real” vegetables - radishes go from seed to crisp, peppery root in about four weeks in a reasonably deep pot. Genuinely satisfying for impatient growers and children.
The Ambitious Windowsill Crops
Chillies
Chilli plants grow well indoors if you can give them a very bright, warm windowsill. They’re attractive, productive, and a single plant yields a steady supply over months. They need patience - months from seed to fruit - so buying a young plant speeds things up.
Cherry Tomatoes
Compact, “patio,” or dwarf cherry tomato varieties can fruit on a very sunny windowsill. They demand maximum light, warmth, regular feeding, and a decent-sized pot - the most challenging crop here, but rewarding when it works.
The Odd One Out: Mushrooms
Mushroom Kits
Mushrooms are the exception to every rule on this list - they need no light at all and grow from a ready-made kit (a block pre-inoculated with mushroom spawn). Just keep it humid and in a cool, shady spot, and harvest oyster or other mushrooms within a couple of weeks. Perfect for a dark corner where nothing else edible would grow.
How to Succeed With Windowsill Edibles
- Maximise light - the brightest windowsill, or a grow light. The #1 success factor.
- Use pots with drainage holes and good potting mix.
- Choose the right depth - leaves and herbs are happy in shallow pots; radishes, chillies, and tomatoes need deeper containers.
- Water consistently. Small pots on a warm, sunny sill dry out fast - check often, especially in summer.
- Feed the long-term crops. Herbs, chillies, and tomatoes are hungry - give them a regular liquid feed once growing strongly. Fast crops like microgreens need no feeding.
- Sow little and often (microgreens, salad leaves, radishes) for a continuous harvest rather than one glut.
- Harvest correctly - cut-and-come-again for salad and herbs (take outer/top growth), and snip microgreens at soil level.
- Rotate pots so plants leaning toward the light grow evenly.
Frequently Asked Questions
What is the easiest edible plant to grow on a windowsill?
Microgreens - sprinkle seeds on a tray of soil, keep moist, and snip the seedlings within 1-3 weeks. They’re fast, foolproof, and need only moderate light. Pea shoots and spring onions are nearly as easy.
Can you grow vegetables on a windowsill?
Yes - herbs, salad leaves, microgreens, radishes, spring onions, and (with a very bright sill) chillies and cherry tomatoes all grow indoors. It won’t replace a garden, but it provides genuinely useful fresh food.
Do windowsill edibles need a grow light?
On a bright south- or west-facing sill, no. In a dim home or for a reliable winter harvest, a grow light is the honest solution - and it lets you grow edibles anywhere, year-round.
What can I grow indoors with no sunlight?
Mushrooms - grown from a kit, they need no light at all, just humidity and a cool, shady spot. Almost every other edible needs good light or a grow light.
How do I get a continuous harvest from a windowsill?
Sow fast crops - microgreens, salad leaves, radishes - a little at a time every week or two, rather than all at once. For herbs and salad leaves, harvest cut-and-come-again style so plants keep producing.
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