19 Types of Basil: Flavor, Uses, Size, and Growing Tips

“Basil” can mean a soft-leaved Genovese plant destined for pesto, a purple ornamental edging a flower bed, a Thai basil with anise-scented leaves, a citrusy lemon basil, or a clove-heavy holy basil grown for tea and traditional uses. They share a warm-season preference, but they do not taste or grow exactly alike.

Choosing the right type is easier when you begin with the dish or garden role you want. For pesto, choose large tender Genovese leaves. For Southeast Asian cooking, Thai basil holds its character better in hot dishes. For compact containers, bush basil stays neat. For pollinators and ornamental color, purple and flowering basils can be as useful as many annual flowers.

The 19 types below cover the main flavor and growth groups a home gardener is likely to encounter, plus practical notes on when one type is a better choice than another.

What all culinary basils need

Most common culinary basils are tender warm-season plants. They prefer full sun, fertile well-drained soil, regular water, and warm temperatures. Plant outside only after frost danger has passed and soil has warmed.

Spacing matters because dense basil stays wet longer after rain or irrigation. Good airflow can reduce pressure from leaf spots and downy mildew. Water at the soil line when practical and avoid handling plants while foliage is wet if disease is present.

Harvest by cutting stems above leaf nodes so the plant branches. Flowering is not harmful, but leaf-focused growers usually pinch flower spikes to extend vegetative production.

1. Genovese basil

Genovese basil is the standard for classic pesto. It has large, tender, slightly cupped green leaves with a sweet clove-like aroma and mild anise undertone. When a recipe simply says “fresh basil,” this is often the flavor people expect.

Plants are typically 18 to 30 inches tall depending on cultivar and conditions. Frequent stem-tip harvest keeps them bushy. Because leaves are broad and tender, they bruise easily and are sensitive to cold storage.

Choose Genovese when your priorities are pesto, caprese, tomato sauces added near the end of cooking, and large leaves that are quick to harvest.

2. Sweet basil

Sweet basil is a broad horticultural group rather than one single cultivar. It overlaps heavily with Genovese types and includes many familiar green Italian-style basils.

Flavor is usually sweet, spicy, and clove-forward. Illinois Extension lists sweet basil groups with cultivars selected for leaf size, compactness, and aroma.

Use it anywhere you would use Genovese basil. When buying seed, read the cultivar description for plant size and disease resistance because two packets labeled “sweet basil” may perform differently.

3. Large-leaf Italian basil

Large-leaf Italian basils produce oversized leaves that make pesto preparation and sandwich use efficient. Some leaves approach the size of a small hand in ideal conditions.

The flavor is similar to sweet basil but can be slightly milder depending on cultivar. The broad foliage needs good air circulation because crowded leaves trap moisture.

Choose this type if you want maximum leaf area from a few plants or enjoy using whole basil leaves as wraps, salad components, or pizza toppings after baking.

4. Lettuce-leaf basil

Lettuce-leaf basil has huge puckered leaves with a softer texture and often a milder flavor than compact Genovese types. The leaves can be used whole in sandwiches or torn into salads.

Because each leaf is large, a small number of plants can supply substantial kitchen volume. Protect foliage from wind and rough handling; the thin tissue tears easily.

This is a useful variety for gardeners who find strong basil overwhelming but still want a classic sweet-basil profile.

5. Thai basil

Thai basil usually has narrow green leaves, purple stems, and purple flower spikes. Its aroma leans strongly toward anise or licorice, and it remains assertive in soups, curries, noodle dishes, and stir-fries.

The plant tends to handle summer heat well and produces ornamental flowers that attract pollinators. Pinch flower spikes if leaf yield is the priority, or allow some to bloom for insects and seed.

Do not substitute Thai basil blindly for Genovese in pesto unless you want the anise note; the result is delicious but distinctly different.

6. Holy basil, or tulsi

Holy basil usually refers to Ocimum tenuiflorum, a species culturally and religiously significant in South Asia. It is not simply another name for Thai basil.

Leaves are often smaller and more textured, with spicy clove, pepper, and sometimes citrus notes. Plants can be green or purple-stemmed depending on type.

Grow holy basil for tea, traditional culinary uses, fragrance, pollinator flowers, or cultural reasons. If using it medicinally, remember that garden cultivation advice is not a substitute for medical guidance about concentrated preparations or interactions.

7. Lemon basil

Lemon basil offers a clear citrus aroma that pairs with fish, rice, salads, fruit, iced drinks, and Southeast Asian dishes. The fragrance comes from volatile compounds that differ from the dominant profile of Genovese basil.

Leaves are usually smaller and narrower than large sweet basil. Harvest frequently because plants can flower quickly in heat.

Use lemon basil when you want basil character plus bright citrus without adding lemon juice and extra acidity to the dish.

8. Lime basil

Lime basil is closely related in use to lemon basil but has an aroma many gardeners perceive as sharper and more lime-like. It works well in salsas, fruit dishes, beverages, marinades, and Asian-inspired cooking.

The plant is generally compact enough for containers and responds well to regular pinching.

Grow lemon and lime basil side by side if you want to compare them; fragrance is subjective, and the differences are easiest to appreciate fresh from the garden.

9. Cinnamon basil

Cinnamon basil has a sweet spicy fragrance with a cinnamon-like character. Illinois Extension includes cinnamon among distinctive-flavored basil groups.

Plants often have purplish stems and flowers, giving them ornamental value as well as kitchen use. The flavor works in fruit, tea, baked desserts, syrups, and savory dishes where warm spice fits.

It is a good choice for gardeners who already grow Genovese and want a second basil that does something obviously different.

10. Purple basil

Purple basil includes cultivars such as ‘Dark Opal’, ‘Rubin’, and other burgundy-leaved forms. The leaves contain anthocyanin pigments that create dramatic color in beds and containers.

Flavor varies from sweet-basil-like to slightly more spicy or clove-heavy. Purple basil can tint vinegar, salads, garnishes, and herb butters.

The color is strongest in adequate light. In deep shade, foliage may become greener. Let some flowers open if you want an ornamental and pollinator display rather than maximum leaf production.

11. Dark Opal basil

‘Dark Opal’ is a classic purple cultivar prized for deep foliage and pinkish flowers. It can be grown as an edible ornamental along paths or mixed into flower beds.

Use the leaves fresh because cooking can dull their color. They make striking garnishes and colored herb vinegar.

Like other purple basils, plants are still frost-sensitive and need the same warm soil, sun, and moisture management as green types.

12. Greek bush basil

Greek bush or globe basil forms a dense rounded plant with many tiny leaves. Instead of producing a few large harvestable leaves, it creates hundreds of small aromatic leaves along closely spaced stems.

Its natural shape makes it useful as an edible edging plant and in containers. Pinching can keep it compact, but it requires less structural pruning than tall Genovese basil.

Harvest by snipping tender tips rather than trying to pluck individual tiny leaves one at a time.

13. Spicy Globe basil

‘Spicy Globe’ is another compact bush-type basil commonly listed by Illinois Extension. It stays small and rounded, making it ideal for a windowsill pot, patio container, or the front edge of an herb bed.

Flavor is strong despite the small leaves. A light shear harvest is efficient, provided you leave green nodes below the cut.

This is a better choice than a three-foot basil when space is the limiting factor.

14. Greek Columnar basil

Greek Columnar basil is notable because it grows upright and is reluctant to flower under many conditions. Illinois Extension has highlighted it as a dense plant that stays attractive late in the season.

Because it does not bolt readily, there is less flower-pinching work. The narrow columnar habit also saves horizontal space.

Flavor is useful for general cooking, though pesto purists may still prefer Genovese. Choose it for consistent foliage and an architectural container shape.

15. Pesto Perpetua basil

‘Pesto Perpetua’ is a variegated columnar basil with cream-edged leaves. It is both ornamental and edible and, like Greek Columnar, tends to remain vegetative rather than flowering heavily.

The upright habit works in mixed containers where a standard basil might become sprawling. Variegated leaves add light color among green herbs.

Propagation and seed availability can differ from ordinary basil because some specialty cultivars do not set useful seed; purchase from a reliable nursery when needed.

16. African blue basil

African blue basil is a vigorous ornamental edible basil hybrid known for purple-tinged foliage and abundant flowers. It is often sterile, so it can bloom for long periods without setting seed.

Pollinators love the flowers, making it an excellent choice for a kitchen garden that also supports bees. Leaves have a stronger camphor or clove character than Genovese and are not everyone’s pesto preference.

In frost-free climates it can become shrub-like; elsewhere it behaves as a tender annual unless overwintered indoors.

17. Cardinal basil

Cardinal basil is grown partly for large dense purple flower heads that resemble ornamental celosia from a distance. The green leaves remain usable in cooking.

Because the flowers are a major feature, do not pinch every bud as you would on a pesto crop. Grow it where you can enjoy both edible foliage and pollinator activity.

It works particularly well in mixed vegetable-flower beds where appearance matters as much as harvest weight.

18. Christmas basil

Christmas basil is a specialty type with fruity-spicy fragrance and attractive flowers. It is sometimes described as having notes of mulled spice or fruit, making it interesting for teas, fruit dishes, and aromatic arrangements.

Availability is more limited than Genovese or Thai basil, so order seed early if you want to experiment.

As with all named basils, flavor descriptions are subjective. Taste a fresh leaf before committing a large harvest to a recipe.

19. Downy-mildew-resistant basil cultivars

Basil downy mildew has made disease resistance an important selection trait. Breeding programs have released sweet-basil cultivars with improved resistance while preserving a Genovese-like flavor and leaf form.

Cultivar names change as new releases reach the market, so check current university trial data and seed-supplier disease claims rather than relying on an old list. Resistance reduces risk but does not mean immunity.

If downy mildew repeatedly ends your basil season, choosing a resistant cultivar can make a bigger practical difference than choosing among several similar traditional Genovese strains.

How to choose among the 19 types

Start with use. For pesto and Italian cooking, plant mostly Genovese or sweet basil. For curries and noodle dishes, add Thai basil. For tea and cultural use, grow holy basil. For drinks and fruit, lemon or lime basil adds a flavor that ordinary basil cannot imitate.

If space is tight, choose bush or columnar types. If visual design matters, include purple, Cardinal, African blue, or Pesto Perpetua. If disease pressure is severe, prioritize resistance over novelty.

A household that cooks often usually gets more value from three different basil types than from three nearly identical Genovese cultivars.

Can basil varieties grow together?

Yes. Their cultural needs are similar enough that several types can share a bed or large container, provided each plant has enough root space and airflow.

The main complication is seed saving. Bees move pollen among compatible flowering basils, so seedlings grown from saved seed may be hybrids. If true-to-type seed matters, use isolation distances or controlled pollination appropriate to the species.

For ordinary fresh harvest, mixed planting has no downside and makes it easy to compare flavor side by side.

Prune each variety according to its growth habit

Tall Genovese and Thai basil respond well to stem cuts above nodes. Bush basil needs lighter tip shearing because nodes are close together. Columnar types should be harvested down the sides while preserving their upright framework.

Flower-pinching also depends on purpose. Remove flowers from a pesto crop, but let African blue basil bloom if bees are the reason you planted it.

The correct pruning technique is the one that supports the plant’s intended role.

Taste before you preserve a large batch

Drying and freezing concentrate your commitment to a flavor. Before filling a freezer with Thai basil pesto or a jar with cinnamon basil, taste the variety fresh in the dish you plan to make.

Large-leaf sweet basil generally freezes well for sauces. Lemon and Thai basil retain distinctive aromas when frozen. Dried basil is convenient but tastes different from fresh because volatile oils change during dehydration.

Label preserved basil by variety. In winter, the difference between lemon basil and Genovese matters a great deal in a tomato sauce.

Conclusion

There is no single “best basil.” Genovese excels at pesto, Thai basil brings anise flavor to hot dishes, lemon and lime types brighten drinks and salads, holy basil has its own culinary and cultural identity, and bush or columnar basils solve space and maintenance problems. Purple and African blue basils can serve as ornamental pollinator plants while still offering edible leaves.

Choose varieties by flavor, growth habit, disease pressure, and how you actually cook. All of them benefit from warm soil, strong light, consistent moisture, airflow, and regular harvest above leaf nodes. Plant two or three contrasting types in the same season and you will quickly discover why basil deserves to be treated as a whole family of flavors rather than one green herb.