Science & Nature • Plant

Basil

Basil is a culinary herb in the mint family, grown for its aromatic leaves and widely used fresh or dried in cooking.

By Ethan Anderson| Reviewed by Olivia Bennett, Standards & Fact-Checking Lead| Updated July 27, 2026|2 min read| Fact-checked

Basil is a culinary herb in the mint family, grown for its aromatic leaves and widely used fresh or dried in cooking. It is typically grown as a warm-season annual in temperate climates, although it is a perennial in frost-free tropical and subtropical regions. Sweet basil is the most commonly used form in cooking.

Description

Basil is an aromatic herb grown for its tender leaves. It includes several cultivars and forms, with sweet basil among the most widely grown for cooking.

Cultivation

Basil grows best in warm conditions, full sun, and soil that stays evenly moist but drains well. It is commonly started from seed or transplants after frost danger has passed.

Harvest and care

Regular trimming promotes branching and continuous leaf production. Garden guides recommend cutting stems just above a leaf pair and removing flower buds when they appear.

Culinary use

Basil is widely used fresh in Italian, Mediterranean, and pesto-based dishes. Its leaves are valued for their strong aroma and flavour, which are most pronounced when fresh.

Types and naming

Sweet basil is the standard culinary type and is described as slightly sweeter than Genovese basil in some gardening sources. Other types may differ in leaf size, growth habit, and flavour intensity.

Key facts

Basil is a fast-growing warm-season herb that does best in full sun and well-drained, moist soil.
It is commonly grown as an annual because it does not survive frost in most temperate gardens.
Harvesting by trimming stems above a leaf pair encourages new growth and a bushier plant.
Sweet basil is the best-known culinary type and is often used fresh in Italian and Mediterranean cooking.
Pinching off flower buds helps keep the plant producing leaves longer.

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Canadian context

Basil is a common herb in Canadian home gardens and indoor containers, but it is usually grown as an annual outdoors because Canadian winters are too cold for frost-sensitive plants.

Frequently asked questions

How do you grow basil?

Plant basil in full sun after frost danger has passed, in moist but well-drained soil. Water regularly, avoid waterlogging, and pinch the tips to encourage branching.

What are the benefits of basil?

Basil is valued mainly for its culinary and aromatic qualities. Some gardening and seed guides also describe it as containing compounds with anti-inflammatory, antibacterial, and mineral content claims, but these are not medical recommendations.

What is basil used for?

Basil is used as a culinary herb, especially in pesto, sauces, salads, and Mediterranean dishes. It is also grown as an ornamental and kitchen-garden herb for its fragrance and flavour.

How do you harvest basil?

Harvest by snipping stems just above a lower pair of leaves or leaf nodes, rather than picking single leaves. This helps the plant regrow and become bushier.

Is basil a perennial?

Basil is usually grown as an annual in temperate climates, but it can be perennial in frost-free tropical or subtropical conditions.

What is the difference between basil and sweet basil?

Basil is the broader herb name, while sweet basil refers to the common culinary type, often called Italian basil or Ocimum basilicum. Sweet basil is generally the standard kitchen basil and is described as slightly sweeter than some other basil types.

References

Joe Gardener — https://joegardener.com/how-do-i-grow-basil/
Supports: Harvesting basil by cutting stems above lower buds; notes on basil types and growth habit.
Bonnie Plants — https://bonnieplants.com/blogs/how-to-grow/growing-basil
Supports: Basil as a warm-weather annual that grows rapidly.
The Pioneer Woman — https://www.thepioneerwoman.com/home-lifestyle/gardening/a65302147/basil-plant-care-guide/
Supports: Sweet basil description; basil as an annual; pinching flowers and regular trimming.
University of California Agriculture and Natural Resources IPM — https://ipm.ucanr.edu/home-and-landscape/cultural-tips-for-growing-basil/
Supports: Basil as a warm-season annual; full sun; regular watering; harvesting and pinching tips.
— https://www.loveys.com/
Homestead and Chill — https://homesteadandchill.com/how-to-grow-bushy-basil/
Supports: Basil growing conditions, pot size, and watering preferences.
Lowe's — https://www.lowes.com/n/how-to/how-to-grow-basil
Supports: Harvesting and pruning guidance; encouraging branching.
Urban Farmer Seeds — https://files.ufseeds.com/on/demandware.static/Sites-UrbanFarmer-Site/Sites-UrbanFarmer-Library/default/images/Instructions-for-Growing-Basil.pdf
Supports: Culinary uses and general benefit claims.