15 Vegetables That Actually Grow Indoors Without Direct Sunlight

Search for low-light indoor vegetables and you’ll find the same list on twenty sites: lettuce, spinach, kale, herbs. What you almost never find is a number. How much light is “low”? Is a north-facing window enough? Is the back of a room enough?

Without a number, the list is unusable. You can’t tell whether your specific spot qualifies.

So this list is organized by measurable light, not by vibes. Each crop has a target light level in lux, the hours it needs, and how long it takes to reach your plate.

First, an important distinction

“Without direct sunlight” and “without light” are different things.

Nothing edible grows in the dark. What varies is whether the light comes from the sun hitting your plants directly, from bright indirect daylight, or from an LED fixture. Plenty of vegetables are fine with the second and third options. None are fine with none.

So this list has three tiers:

• Tier 1 grows in bright indirect light — a north-facing window, or a few feet back from a brighter one
• Tier 2 grows with two to four hours of weak or filtered sun — a typical east or west window
• Tier 3 needs a grow light, but only a grow light — no sun required at all

Tier 3 belongs here because a windowless room with a $40 LED panel is genuinely a better growing environment than a dim north window. It just costs a few dollars a month in electricity.

How to measure your light in five minutes

You need a rough lux reading. Two options:

A phone app. Search your app store for “lux meter” or “light meter.” Free versions are accurate to roughly ±20%, which is plenty for this purpose. Hold the phone flat where the leaves will sit, facing up, and read the number.

No app? Use these rough benchmarks instead. Outdoor full sun is around 100,000 lux. Overcast outdoors is 5,000–20,000. A bright room away from the window is 200–500. A north-facing sill on a clear day is typically 1,000–2,500. An east or west sill during its sunny hours runs 2,000–10,000. A south sill in direct sun can hit 20,000–50,000.

Two caveats worth knowing.

First, lux is an imperfect measure for plants. It’s weighted to human eye sensitivity, and plants use a slightly different slice of the spectrum. Horticultural research uses DLI (daily light integral, in mol/m²/day) instead. But lux is what your phone measures, and for comparing one spot in your home to another it works fine. Treat the numbers below as practical targets, not laboratory specs.

Second, duration matters as much as intensity. 5,000 lux for eight hours does more than 20,000 lux for one. That’s why each crop below lists both.

Take your reading in the darkest month you plan to grow in. A window that reads 8,000 lux in June may read 1,500 in December.

Tier 1: Grows in bright indirect light (1,000–3,000 lux)

These five will produce food in a north-facing window. Growth is slower than in brighter conditions, and you’re harvesting young leaves rather than mature heads — but it’s real food.

Crop	Target lux	Hours/day	Germination	First harvest
Microgreens	1,000–2,000	8–12	2–4 days	7–14 days
Pea shoots	1,000–2,500	8–12	3–5 days	12–18 days
Mizuna	1,500–3,000	10–12	4–7 days	21–30 days
Mustard greens	1,500–3,000	10–12	4–7 days	21–35 days
Watercress	1,500–3,000	10–12	5–10 days	30–40 days

1. Microgreens. The single most reliable indoor crop, and the reason is structural: you harvest before the plant needs to photosynthesize much at all. The seed’s own energy reserves carry it most of the way. Broccoli, radish, sunflower, and pea are the easiest varieties. Sow densely in a 2-inch tray, keep the surface damp, harvest with scissors when the first true leaves appear. Two weeks from seed to salad. Soil isn’t the only surface that works — see soil vs. hemp mat vs. paper towel for how the options compare.

2. Pea shoots. Same principle, bigger yield per tray, and a mild sweet flavor that works raw or stir-fried. Use whole dried peas — they’re far cheaper than packets labeled “pea shoot seed.” Cut above the lowest node and many varieties will regrow once.

3. Mizuna. A Japanese mustard green with serrated leaves and a gentle peppery bite. Genuinely shade-tolerant, fast, and it regrows from cut-and-come-again harvesting for weeks. If you only try one Tier 1 crop that isn’t a microgreen, make it this.

4. Mustard greens. Similar tolerance to mizuna with a stronger flavor that mellows when cooked. Harvest outer leaves at 3–4 inches for salads; larger leaves get sharp enough that most people prefer them wilted.

5. Watercress. The one crop on this entire list that likes wet feet. Stand the pot in a shallow tray of water rather than letting it drain dry. Prefers cool temperatures — under 70°F (21°C) — which makes it a good winter crop near a cool window.

Tier 2: Grows with 2–4 hours of weak sun (3,000–10,000 lux)

An east or west window puts you here. These crops will produce steadily, though fruiting and root formation stays limited.

Crop	Target lux	Hours/day	Germination	First harvest
Leaf lettuce	5,000–10,000	10–14	7–10 days	25–50 days
Arugula	5,000–10,000	10–12	5–7 days	30–40 days
Spinach	5,000–10,000	10–12	7–14 days	40–50 days
Scallions	3,000–8,000	8–12	7–14 days	21 days (regrow)
Mint	3,000–8,000	8–12	10–15 days	40–60 days

6. Leaf lettuce. Loose-leaf varieties only — Black Seeded Simpson, Oak Leaf, Salad Bowl, Lollo Rossa. Head-forming types like iceberg and romaine need substantially more light and will disappoint you. Harvest outer leaves and the center keeps producing for six to eight weeks. Bolting (going to seed, turning bitter) is triggered by heat more than light, so keep it under 75°F (24°C).

7. Arugula. Faster than lettuce and more forgiving. Peppery when young, aggressively so when mature — harvest at 2–3 inches if you’re using it raw. One of the few greens that genuinely tastes better homegrown, because supermarket arugula is usually past its peak.

8. Spinach. Slower to germinate than everything else here, and germination drops sharply above 70°F (21°C). If your seeds don’t come up, temperature is the likely culprit, not light. Prefers cool conditions overall, which makes it another good winter option — see our full spinach growing guide for the germination fix and why it bolts faster than lettuce.

9. Scallions. The lowest-effort crop in this article. Save the white root ends from store-bought scallions, stand them in an inch of water or plant them in soil, and they regrow green tops in about three weeks. You can repeat this two or three times per root before it exhausts itself. Zero seed cost — and scallions are just the start; see which other kitchen scraps actually regrow indoors for the ones worth trying and the ones that are commonly oversold.

10. Mint. Grows in conditions that stall other herbs, and its problem indoors isn’t light — it’s aggression. Mint spreads via runners and will strangle anything sharing its pot. Give it a dedicated container. Peppermint and spearmint are both reliable — see our full mint growing guide for containment and propagation.

Tier 3: Needs a grow light, but no sunlight at all (10,000+ lux)

These won’t work in a dim window at any duration. With a modest LED fixture running 12–16 hours, they work anywhere — including a closet.

Crop	Target lux	Hours/day	Germination	First harvest
Basil	10,000–20,000	12–16	5–10 days	50–60 days
Radish	10,000–15,000	12–14	3–5 days	25–30 days
Bok choy	10,000–15,000	12–14	4–8 days	40–50 days
Swiss chard	8,000–15,000	12–14	7–14 days	50–60 days
Parsley	8,000–12,000	12–14	14–28 days	70–90 days

11. Basil. The most commonly attempted indoor herb and the most commonly killed. It wants more light and more warmth than people expect — 10,000 lux is a floor, not a target, and it sulks below 65°F (18°C). Pinch the growing tips regularly and the plant branches instead of flowering, which multiplies your total harvest. If yours is struggling, the seven usual causes are here, sorted by symptom.

12. Radish. Fast, satisfying, and the light requirement is about the root rather than the leaves. Under-lit radishes produce lush tops and almost no bulb — a very common and very frustrating outcome. Needs 8 inches of container depth. Choose small round varieties like Cherry Belle over long types.

13. Bok choy. Underrated indoors. Compact, fast, tolerant of cool temperatures, and baby varieties can be harvested whole at 4–5 inches. Handles a wider temperature range than lettuce.

14. Swiss chard. Slower to start than other greens but extraordinarily long-lived — a single plant can produce for months of cut-and-come-again harvesting. The colored-stem varieties (Bright Lights, Rhubarb) are genuinely ornamental, which matters if the garden lives in your kitchen.

15. Parsley. Include it knowing that germination is slow and erratic — two to four weeks is normal, not a failure. Soaking seeds overnight helps. Flat-leaf has more flavor; curly is more compact. Once established it’s very durable.

What doesn’t work indoors, and why

Being honest about this saves more money than any recommendation.

Crop	Why it fails indoors
Tomatoes	Needs 20,000+ lux for 14+ hours, plus hand pollination. Possible, but a dedicated project
Peppers	Same light problem, plus a long season
Cucumbers, squash	Sprawling vines and heavy light demand
Corn	Wind-pollinated and tall. Not a container crop
Carrots	Need depth and light; usually produce stunted roots
Head lettuce, cabbage	Head formation requires far more light than leaf production
Broccoli, cauliflower	Long season, high light, huge plants for one harvest

The pattern is consistent: anything where you eat the fruit, the root, or a tightly formed head needs much more light than anything where you eat the leaves. Leaves are the machinery; everything else is what the plant builds with surplus energy, and indoors there usually isn’t surplus.

Matching this list to your space

If you haven’t measured your window yet, do that first — it determines which tier you’re shopping from. The beginner setup checklist walks through the audit in order, along with container depth, airflow, and feeding.

If you’re specifically working with herbs and want to know which window direction suits which herb, that mapping is here.

And if this article pushed you toward Tier 3 — meaning you need a light — two things matter next: how far to hang it, covered in the grow light distance chart, and what it costs to run, broken down by state in indoor garden electricity costs.

Frequently asked questions

Can I really grow food in a north-facing window? Yes, from Tier 1. Expect slower growth and young leaves rather than mature plants. Microgreens and mizuna are the most reliable.

Will Tier 1 crops grow faster if I add a light? Yes, noticeably. Shade tolerance means a crop survives low light, not that it prefers it.

How many hours of light is too many? Plants need a dark period for respiration. Cap grow lights at about 16 hours and never run them continuously.

Do LED grow lights work as well as sunlight? For leafy greens, yes — and they’re more consistent, since you control the variable entirely. The limitation is intensity: matching direct summer sun requires a serious fixture.

Which single crop should a complete beginner start with? Microgreens. Two weeks to harvest, minimal light, and almost impossible to fail. The quick win is what gets you to a second attempt.