Why is my basil getting tall and leggy instead of bushy?

Leggy basil is almost always caused by two things: not enough light and not pinching. Basil stretches toward weak light, so give it 6 to 8 hours of direct sun or a bright grow light indoors. Just as important, you have to pinch the growing tip once the plant has three or four sets of leaves; each pinch forces the plant to branch into two, and repeated pinching is what turns a single stalk into a full, bushy plant. A basil plant left to grow straight up will always be thin and sparse.

How do I keep my basil from flowering?

Pinch off the flower buds the moment you see them forming at the tips. Once basil flowers and sets seed it shifts energy away from leaves, the foliage turns bitter, and growth slows, so removing buds keeps the plant in leaf-producing mode and the flavor sweet. Regular harvesting from the top does the same job, because you are constantly removing the tips before they can bolt. In peak summer heat basil wants to flower quickly, so check every few days and stay ahead of it.

Can basil grow indoors on a windowsill?

Yes, but light is the deciding factor. Basil needs 6 to 8 hours of strong light, and most windowsills, even south-facing ones, fall short in winter, producing pale, leggy plants. A sunny summer window can work; the rest of the year an inexpensive LED grow light run 12 to 14 hours a day gives far better results. Keep indoor basil warm (65 to 75 degrees F), out of cold drafts, in a pot with drainage, and water when the top inch dries. Given enough light, it thrives indoors.

How often should I water basil?

Water basil when the top inch of soil feels dry, which in warm weather often means every one to three days for a container and less often in the ground. Basil likes consistent moisture but hates soggy roots, so it needs a pot with drainage holes and should never sit in standing water. Wilting is the obvious thirst signal, but check the soil first, because basil also wilts briefly in intense afternoon heat and recovers on its own. Water at the base in the morning to keep the leaves dry and reduce disease.

When and how do I harvest basil so it keeps producing?

Start harvesting once the plant is 6 to 8 inches tall, and always cut from the top down, snipping just above a pair of leaves rather than pulling single leaves from the bottom. Cutting the tip forces the plant to branch, so harvesting and pruning are the same action, and the more you cut the more it produces. Never strip more than about a third of the plant at once. Harvest in the morning when the oils are strongest, and pinch any flower buds you find while you are at it.

How to Grow Basil: From Seed to a Bushy, Endless Harvest

Written & researched by Elena Marsh Gardening & Landscaping Editor

Updated March 2026

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The short answer: to grow basil, give it full sun (6 to 8 hours), warm soil above 60°F, and rich, well-drained soil kept evenly moist. Start seeds indoors 4 to 6 weeks before your last frost or sow directly once nights stay reliably above 50°F, because basil is a heat lover that frost kills instantly. The secret to a full, productive plant is pinching: once it has three or four sets of leaves, pinch out the growing tip to force branching, and keep pinching (and removing flower buds) all season to keep tender leaves coming.

Basil is one of the easiest and most rewarding herbs to grow, but the difference between a thin, bolting stalk and a lush bush comes down to a few habits — light, warmth, and relentless pinching. Get those right and one plant can feed a kitchen all summer. We do not test the tools we rank; our picks come from aggregated owner reviews and expert consensus, explained in how we rank.

Choosing a basil variety

Not all basil is the same plant. Picking the right type for your use makes a real difference.

Variety	Character	Best for
Genovese	Large, sweet, classic Italian leaves	Pesto, caprese, all-purpose
Sweet basil	Reliable, slightly smaller than Genovese	General cooking, beginners
Thai basil	Anise-clove flavor, sturdy, heat-tolerant	Southeast Asian dishes; slower to bolt
Spicy Globe / Greek	Tiny leaves, compact mounding habit	Containers, edging, windowsills
Lemon / lime basil	Citrus notes	Fish, drinks, dressings
Purple (Dark Opal)	Deep purple leaves, mild	Color, vinegars, garnish

For most kitchens, Genovese is the default. If your summers are brutally hot, Thai basil holds up and bolts more slowly.

Three-quarter view of a person harvesting ripe tomatoes into a basket in a backyard vegetable garden, in warm late-afternoon light

Starting basil from seed

Basil germinates fast and easily, which makes it a great beginner seed. Start indoors 4 to 6 weeks before your last frost date, or sow directly outdoors once the soil has warmed.

Sow shallow. Basil seeds need warmth and only a light covering — about 1/4 in deep. Press them into moist seed-starting mix and barely cover.
Keep it warm. Germination is quick (5 to 10 days) at 70°F or warmer. A seedling heat mat speeds things up in a cool room.
Give strong light immediately. The moment seedlings emerge, they need bright light or they stretch. A grow light 2 to 3 in above the seedlings prevents legginess.
Thin to the strongest. Snip out weaker seedlings so each pot has one robust plant.
Harden off before transplanting. Acclimate seedlings to outdoor conditions over a week before planting out.

For the full indoor-sowing process shared with other crops, see how to start seeds indoors.

When and where to plant basil

Basil is unambiguously a warm-season plant. It has zero frost tolerance and sulks in cold soil, turning leaves black or brown if the temperature drops below about 50°F. Do not rush it outside. Wait until:

All danger of frost has passed and nights stay reliably above 50°F — often two to three weeks after your last frost date.
Soil has warmed to at least 60°F, ideally 70°F. Basil planted into cold ground stalls and may never recover.

Plant in full sun, in soil enriched with compost, spaced 10 to 12 in apart so air moves between plants. Basil is also an excellent container herb and a classic tomato companion, sharing the same warm, sunny, moist conditions — see our companion planting chart.

Overhead view of a person harvesting ripe tomatoes into a basket in a backyard vegetable garden, in warm late-afternoon light

Pinching: how to get a bushy plant

This is the technique that separates a thriving basil plant from a spindly one, and most people skip it. Basil grows from a central stem, and if you leave it alone it shoots straight up, thin and prone to flowering. Instead:

Wait until the plant has three or four sets of true leaves and is around 6 in tall.
Pinch out the very top growing tip, cutting just above a pair of leaves. This removes the plant's apical dominance.
The plant responds by branching into two new stems from that node. Repeat on each new tip as it grows.
Keep pinching every couple of weeks. Each pinch roughly doubles the growing points, and within a month or two you have a dense, rounded bush instead of a single stalk.

Pinching and harvesting are the same action, so every time you cook you are also shaping the plant.

Watering and feeding

Basil likes consistent moisture but not wet feet. Water when the top inch of soil dries — in hot weather that can mean every day or two for a container and less for in-ground plants. Always use a pot with drainage; basil roots rot quickly in standing water. Water at the base in the morning to keep foliage dry and reduce fungal disease.

Basil is a light feeder. Rich soil with compost usually carries it, but a container plant benefits from a dilute balanced liquid feed every few weeks. Do not overdo nitrogen — heavy feeding grows lush leaves with weaker flavor. Steady, moderate feeding keeps the aromatic oils strong.

Three-quarter view of a person harvesting ripe tomatoes into a basket in a backyard vegetable garden, in soft early-morning light

Stopping it from flowering (bolting)

When basil flowers, it is trying to make seed, and it does two things you do not want: it slows leaf production and it turns the leaves bitter. In summer heat, basil wants to bolt quickly, so staying ahead of it matters. Pinch off any flower buds the instant they appear at the tips, and harvest regularly from the top, which naturally removes the buds before they open. If a plant does flower before you catch it, cut it back hard just above a leaf pair and it will often push new leafy growth. Consistent pinching keeps a plant productive and sweet for the whole season.

Harvesting and preserving

Start harvesting once the plant is 6 to 8 in tall. Always cut from the top down, snipping just above a leaf pair, never stripping individual lower leaves — top cuts drive branching, bottom-stripping leaves you with a bare stalk. Take no more than about a third of the plant at a time and it bounces back fast. Harvest in the morning, when the essential oils are at their peak.

To preserve a glut: basil does not dry well (it loses most of its aroma), so freeze it instead. Blend leaves with a little olive oil and freeze in ice-cube trays, or make pesto and freeze that. Both hold flavor far better than dried basil. To propagate more plants for free from cuttings, see how to propagate basil.

Common basil problems

Problem	Cause	Fix
Leggy, thin growth	Low light and no pinching	More sun; pinch tips regularly
Black or brown leaves	Cold damage below 50°F	Keep warm; do not plant out too early
Yellowing lower leaves	Overwatering or nutrient shortage	Check drainage; light feed
Bitter leaves	Plant has flowered	Pinch buds; cut back and harvest more
White or gray fuzz (downy mildew)	Humidity, wet leaves, poor airflow	Space plants; water at base; remove affected leaves
Holes in leaves	Slugs or Japanese beetles	Handpick; use barriers

Basil is a natural partner to the summer garden's stars. For its most famous companion, see how to care for tomatoes. Everything else on growing herbs and vegetables is at the seeds and vegetable growing hub.

How to Grow Basil