Best Indoor Herb Garden for a Kitchen Windowsill

The Best Indoor Herb Garden for a Kitchen Windowsill

The best indoor herb garden for a kitchen windowsill depends on how much direct sun the sill gets. With 6 hours or more in a south window, plain pots with drainage holes are the best choice, and they are also the cheapest. With 2 to 6 hours, stay with pots but grow chives, cilantro or lemon balm, or add a small grow light. With less than that, choose a hydroponic unit with a built-in light, or put pots under a separate light. A self-watering planter fits one particular case: good light and an owner who forgets to water.

System	Light it relies on	Watering	Herb choice	Fits best
Plain pots	The window, or an added grow light	By hand, when the mix dries	Any herb, from seed or starts	South windows; herbs with different water needs
Self-watering planter	The window, or an added grow light	Refill a reservoir	Any, but best for moisture lovers	Bright sills, irregular waterers
Hydroponic pod unit	Built-in LED	Top up water and nutrients	Limited to what fits the pods	Dim or north-facing kitchens

If you would sooner buy everything in one box, our guide to herb garden kits for beginners compares the packaged options.

Light: How Many Hours a Windowsill Herb Garden Needs

Light decides more than the container does. Iowa State University Extension puts the figure at around eight hours of direct light a day for most herbs grown indoors, and names a south-facing window as the place to get it. A bright east or west window can also work. Penn State Extension sets the bar a little lower, saying most herbs need 6 hours of direct sunlight, and it names bay, rosemary and thyme as the herbs that do best in direct sun. Chives, cilantro and lemon balm tolerate low light and get by on 2 to 6 hours.

Count the hours on your own sill before buying anything. Note when direct sun first lands on it and when it leaves, and remember that the number drops in fall and winter as the sun sits lower and days shorten.

When the window falls short, a grow light closes the gap. Place the light within 6 to 12 inches of the leaves and plug it into a timer set for 12 to 16 hours a day. That setup turns an east window or even a north one into a workable herb spot, and it is the same thing a hydroponic pod unit does with its built-in lamp. Our roundup of grow lights for herbs indoors in winter covers clip-on and bar styles that fit a sill.

Which Herbs Suit an Indoor Windowsill

Iowa State’s list of herbs that do well indoors is parsley, mint, chives, basil, oregano, cilantro and thyme. Rosemary, sage, lemon balm, marjoram, chervil and bay laurel are worth trying next, though several of them need more light.

Herb	Direct sun	Watering
Chives	2 to 6 hours	Let the soil dry between waterings
Cilantro	2 to 6 hours	Let the soil dry between waterings
Lemon balm	2 to 6 hours	Let the soil dry between waterings
Basil	A bright south window	Never let the mix dry out completely
Thyme	6 hours	Let it dry slightly between waterings
Rosemary	6 hours	Let it dry slightly between waterings
Bay	6 hours	Let it dry slightly between waterings
Oregano, marjoram, sage	A bright south window	Let them dry slightly between waterings

The watering column matters when you choose a system. Basil wants constant moisture, and the Mediterranean herbs want to dry a little. One shared trough or one shared reservoir cannot do both, which is the strongest argument for separate pots. Skip herbs with large root systems, such as fennel, lovage and horseradish. Dill has a taproot and needs a deep pot, so it is a poor fit for a shallow sill planter.

Whether to sow or buy plants is a separate question, covered in herb seeds versus starter plants.

Plain Pots: The Flexible Choice

Individual pots are the simplest indoor windowsill herb garden and the easiest to get right. Each herb gets its own watering schedule, a failed plant is replaced without touching the others, and the row can grow or shrink with the sill.

Two details matter. Every pot needs a drainage hole and a well-drained potting mix, because most herbs do not tolerate wet soil. Clay or terracotta is a good material for herbs, since the porous walls let the mix dry more readily. Set each pot on a saucer and empty it after watering.

Feed lightly. Iowa State recommends an all-purpose fertilizer solution at half or quarter strength from early spring through summer, with none in winter. Penn State’s version is a low dose of water-soluble fertilizer every 2 weeks. Harvest often, since regular cutting keeps plants compact, and the technique for basil is in how to pinch basil.

Self-Watering Planters

A self-watering planter holds the potting mix on a perforated platform above a water reservoir. Water wicks up from the reservoir into the mix, and roots can grow down toward it. University of Maryland Extension notes that these containers have an overflow hole on one side where an ordinary pot has drainage holes in the base.

The design keeps the mix moist. That suits basil, which Penn State says should never dry out completely, and gardeners often grow parsley and mint the same way. It works against rosemary, thyme, oregano and sage, which Penn State says should dry slightly between waterings. If you choose a self-watering planter for a kitchen windowsill, fill it with moisture lovers and keep the Mediterranean herbs in a clay pot beside it.

A reservoir does nothing for light. A self-watering planter on a dim sill grows thin, pale herbs that are well watered. Measure the sill before buying, since many of these planters are a single fixed trough, and compare the two approaches in self-watering planters versus regular pots.

Hydroponic Pod Units

A countertop hydroponic unit grows herbs in water and dissolved nutrients, with an LED lamp on an arm above the plants. Because the light is built in, the unit does not depend on the window at all, which makes it the practical choice for a north-facing kitchen or a sill that gets less than 2 hours of sun.

The trade-offs are cost, space and choice. Units cost more than pots, they need an outlet and headroom for the lamp, and many accept only the maker’s own seed pods. Before you buy, check the price of replacement pods and nutrients, since that is the running cost. Check too whether the lamp height adjusts. The 6 to 12 inch distance that works for a separate grow light applies here as well, and basil outgrows a fixed lamp quickly.

A pod unit can also sit on the counter away from the glass, which helps in winter when the sill itself gets cold.

Temperature on the Sill

Herbs are comfortable at normal room temperature. Penn State gives targets of 65 to 70°F during the day and 55 to 60°F at night. The sill is often the coldest place in the room on a January night and the hottest on a July afternoon, so check it with a thermometer in both seasons.

Basil is the tender one. It cannot survive below 50°F, and Penn State advises keeping it off windowsills in winter. Pull pots back from the glass on cold nights. Where indoor air is dry, Penn State suggests grouping the pots or standing them in a pan of moist pebbles to raise the humidity around the leaves. For the month-by-month routine, see our guide to a windowsill herb garden year-round.

How to Choose for Your Kitchen

Work through three checks in order. First, count the hours of direct sun: 6 or more opens every option, 2 to 6 narrows the herb list or calls for a light, and less than 2 means a lighted unit. Second, list the herbs you cook with and split them into the moist group and the dry group. A mixed list points to separate pots. Third, measure the sill depth and the headroom under any cabinet.

For most kitchens with a south or west window, three or four clay pots and a small light for winter will outperform anything more elaborate. The lighted pod unit earns its price in the kitchen with no usable window, and the self-watering trough earns its place with the cook who travels and grows mostly basil and parsley.