Growing space
Indoors
Use bright windows or appropriate grow lights for herbs, microgreens, and genuinely indoor-suitable crops.
Photo: Jon Eben Field / CC BY 2.0
Plan the space
Use bright windows or appropriate grow lights for herbs, microgreens, and genuinely indoor-suitable crops.
What indoors can and cannot do
Indoors gives you stable temperatures, no wind, no frost, and no pests arriving from a neighbouring garden. What it does not give you is light. A room that feels bright to your eyes may deliver almost no direct sun, and that single limitation decides what is worth attempting.
Understanding indoor light
Light falls away sharply with distance from the glass — a plant on the sill and the same plant a metre back are in different worlds. Most herbs need around eight hours of direct light to do well indoors, which few windows supply in winter. A south-facing sill is the best natural position in the northern hemisphere; anything less usually needs a grow light rather than optimism.
What genuinely works
Microgreens are the standout: they are harvested young, tolerate low light, and finish in one to three weeks. Pea shoots and sunflower shoots behave similarly. Chives, mint, parsley, and green onions manage on a bright sill. Lettuce works if you accept looser, slower growth.
What usually disappoints
Tomatoes, peppers, cucumbers, and rosemary are the recurring indoor failures. They are not impossible under strong supplementary lighting, but on a windowsill they stretch, stay pale, and rarely fruit. Choosing a crop matched to the light you actually have is far more effective than trying to compensate later.
Practical setup
Use pots with real drainage and a saucer you can empty rather than one the pot sits in. Turn plants regularly or they lean. Watch for fungus gnats, which are the indoor signal that mix is staying wet too long. Heat sources and cold glass both stress plants, so keep foliage off the window on freezing nights.
Plants that can fit
These matches come from each plant’s graded suitability for this space. Conditions and limitations still matter.
good
Basil
A tender culinary herb that grows quickly with warmth, useful light, and regular harvesting.
excellent
Broccoli Microgreens
A mild, quick microgreen for shallow trays and a bright indoor position.
unsuitable
Bush Beans
A compact warm-season bean that avoids a tall trellis but still needs sun and steady picking.
unsuitable
Carrot
A patient container crop best attempted with short-rooted varieties and deep, stone-free mix.
unsuitable
Cucumber
A productive but thirsty vine for warm, sunny spaces with generous root room and support.
good
Green Onion
A narrow, space-efficient crop for troughs, window boxes, and repeated small harvests.
conditional
Kale
A cold-tolerant leafy crop that can supply repeated harvests from one well-spaced container plant.
excellent
Pea Shoots
A substantial indoor shoot crop with larger seed, more root room, and a longer harvest window than tiny microgreens.
unsuitable
Peas
A cool-season climber that uses vertical space but needs support from the day it begins to stretch.
conditional
Radish
A fast root crop that shows beginners quickly whether light, spacing, and soil moisture are working.
excellent
Radish Microgreens
A quick indoor crop harvested young, before root space becomes a limiting factor.
unsuitable
Rosemary
A long-lived woody herb for strong light and careful drainage, not a forgiving low-light windowsill plant.
conditional
Spinach
A cool-season leafy crop for moderate light and containers that stay evenly moist.
excellent
Sunflower Microgreens
A crisp, larger-seeded microgreen that needs clean handling, even moisture, and room for strong stems.
conditional
Swiss Chard
A resilient leafy crop that tolerates repeated harvesting and a wider temperature range than lettuce.
conditional
Thyme
A compact sun-loving herb that prefers sharp drainage and less water than leafy herbs.
unsuitable
Tomato
A sun-loving crop that rewards a roomy container, steady watering, and sturdy support.
Keep exploring
Read the setup guide
Indoor Edible Gardening
Build an attainable indoor setup around light-tolerant crops, clean trays, drainage, and safe placement.
Build a watering check
How to Water Container Plants
Replace a fixed schedule with a simple root-zone check that adapts to weather, plant size, and container volume.
Understand useful light
How Much Sun Do Edible Plants Need?
Measure direct light in practical hourly ranges and understand why a bright-looking space may still limit growth.