shrub

Henna

Lawsonia inermis

The Story

Plant Bio

Lawsonia inermis, commonly known as henna, is a large, multi-stemmed evergreen shrub native to semi-arid tropical regions of Africa, Asia, and northern Australia. It features slender, densely branched stems that develop sharp terminal thorns with age, clothed in small, glossy green, lanceolate leaves.

The highly fragrant, creamy-white to pinkish flowers emerge in large terminal clusters from spring through fall, followed by small seed capsules. Crushed leaves release lawsone, a natural chemical that produces a permanent orange-red dye when in contact with skin or fabric.

Uses & Benefits:

Ornamental UsesValued for its highly fragrant white-to-pink flower clusters and dense, glossy green foliage.
Practical UsesLeaves contain lawsone, yielding a natural orange-red dye used for skin and hair coloration.
Ecological BenefitsAttracts hummingbirds, native bees, and other pollinators to its nectar-rich blossoms.

Essentials

At a Glance

Plant Type

Shrub

Height

120"

Width

96"

Light

Full Sun

Zones

9, 10

Water

Low

Humidity

Moderate

Lifespan

Perennial

Native To

Africa, Asia, Australia

Toxicity

Non-toxic

Bloom period

Spring – Fall

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In flower about 9 months of the year

Planting

How to Grow

  1. Plant in a container or a garden bed with exceptionally well-drained sandy or loamy soil in a full-sun location.
  2. Water deeply but infrequently, allowing the soil to dry out completely between waterings to prevent root rot.
  3. Apply a balanced, low-dose slow-release fertilizer during the active spring and summer growing seasons.
  4. Bring container-grown plants indoors before overnight temperatures drop below 45°F (5°C) in autumn.

Pro Tip

Overwintering henna indoors requires maximizing direct sunlight and strictly limiting water; soggy soil during winter dormancy rapidly triggers fatal root rot.

Keep It Thriving

Care Guide

Do

  • Provide at least six hours of direct sunlight daily.
  • Ensure the growing medium has excellent drainage.
  • Prune after flowering to maintain shape and size.

Don't

  • Do not overwater, especially during the cool winter dormancy period.
  • Do not cut blindly into old, leafless woody stems when pruning.
  • Do not allow the plant to experience hard freezing temperatures.

Seasonal Care Calendar

TaskJanFebMarAprMayJunJulAugSepOctNovDec
Fertilize
Pest Check
Prune
Winter Prep

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

HedgeContainer PlantSpecimen PlantScented Garden

Multiply

Propagation Methods

Good to Know

Common Questions

Henna questions

What zones can Henna grow in?

Henna is hardy in USDA Zones 9–10. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Henna deer resistant?

Not reliably. Deer may browse Henna, especially tender spring growth — plan on repellents or fencing where pressure is high.

When does Henna bloom?

Henna typically blooms in spring through fall. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Henna need full sun?

Henna does best in full sun (6+ hours).

Is Henna drought tolerant?

Yes — once established (usually after the first full season), Henna handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.

Keep exploring

Explore the genus

Hardy in your zone?

Grow Henna with confidence

See it in a design of your actual yard, get zone-matched care reminders, and track it season by season in your garden journal.