How to Grow Herbs Indoors: Light, Pots, and Best Varieties
Indoor herb growing makes fresh culinary herbs available year-round regardless of outdoor season. The principles are simple but the details of light quantity, drainage, and watering rhythm determine whether an indoor herb garden thrives or declines into leggy, unhealthy plants.
Light Requirements
Light is the most limiting factor for indoor herb growing. Most culinary herbs need the equivalent of a minimum of 4 to 6 hours of bright natural light daily. A south or southwest-facing windowsill provides the best natural light in the northern hemisphere. East-facing windows provide adequate morning light for some herbs but typically not enough for sun-demanding Mediterranean herbs like rosemary, thyme, and basil.
If natural light is insufficient, full-spectrum LED grow lights positioned 15 to 30 centimeters above the plants for 12 to 14 hours per day compensate effectively for low natural light. Signs of insufficient light: leggy, stretched stems, pale or yellow-green leaves, slow growth, and weak flavor.
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Container and Soil Choices
Individual pots for each herb work better than combined planters because different herbs have different watering needs. Basil prefers consistently moist soil, while rosemary and thyme prefer to dry out significantly between waterings. In a shared planter, finding one watering rhythm that suits all species is difficult.
Use containers with drainage holes. A pot without drainage creates waterlogged soil within weeks of regular watering, which kills most herbs through root rot. A free-draining potting mix suits all culinary herbs better than a moisture-retentive mix. The best potting soil for herbs guide covers the soil requirements by herb type.
Best Varieties for Indoor Growing
Basil produces well near a bright window. Compact varieties including Spicy Globe are better suited to containers than large-leafed Genovese basil. Full guidance is in the how to grow basil guide.
Chives grow well indoors in moderate light and tolerate lower-light situations better than most herbs.
Parsley is a biennial that grows well indoors in its first year with consistent moisture and harvesting of outer stems.
Mint grows vigorously indoors with slightly more moisture than Mediterranean herbs. Its spreading root habit is contained by the pot. Full guidance is in the how to harvest and store mint guide.
Thyme and rosemary require maximum available light and are better suited to a grow-light setup during winter in most climates. Individual growing guides are available for rosemary and lavender.
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