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Plant library

Herb · Warm season

Basil

Genovese basil

Basil: crop reference photographCrop reference
Sun

Full sun; at least 6–8 hours of direct sunlight daily.

Water

Aim for about 1 inch of water per week including rain; check soil 1 inch down and water at the roots when it begins to dry. Raised beds may need more frequent watering in heat. Keep moist, never waterlogged.

Spacing

8–12 in

Difficulty

Easy–Moderate

Planting and care

How to grow basil

When to grow

Warm season · Annual

How to start

Seed or young transplant after frost

Mature size

12–30 in tall; cultivar-dependent

Time to harvest

About 25–40 days from transplant or 50–70 days from seed for a useful first harvest.

Feeding needs

Light feeder

Growth habit

Compact Herb

How to prune

Once stems have several leaf pairs, pinch just above a pair of leaves to create two branches. Remove flower buds regularly for more leaf production; never take more than about one-third of a young plant at once.

How to harvest

Snip leafy stem tips just above a leaf pair, rather than stripping single leaves from long bare stems. Harvest after dew dries; leave enough foliage for regrowth.

Harvest and kitchen use

Fresh leaves for pesto, salads and sauces; freeze or dry surplus.

Nutrition and garden value

Aromatic herbs provide flavor and small amounts of vitamins/phytonutrients

High customer value in small space; flowers on many herbs support pollinators/beneficial insects

Common challenges and troubleshooting

Bolting, winter injury or root rot varies by herb