perennialN. America Native

Angelonia

Angelonia angustifolia

The Story

Plant Bio

Angelonia angustifolia, summer snapdragon, is an upright tender perennial from Mexico, the West Indies and South America, grown almost everywhere as a summer annual. Narrow toothed leaves clothe erect stems twelve to eighteen inches high, and loose spikes of small lipped flowers in purple, blue, pink or white open from early summer until frost.

It is one of the few bedding plants that flowers harder as the weather gets worse: heat and humidity that stop petunias and verbena leave angelonia unbothered, which makes it the dependable choice for a southern summer. It is also self-cleaning, so a container stays tidy for months without any deadheading.

Uses & Benefits:

Ornamental UsesUpright spikes of small lipped flowers over months, giving vertical shape among mounding bedding plants.
Practical UsesSelf-cleaning, heat and drought tolerant, and reliable through humid summers that defeat most bedding.
Ecological BenefitsBees and butterflies work the flowers steadily through the hottest part of the season.

Essentials

At a Glance

Plant Type

Perennial

Height

15 inches

Width

10 inches

Light

Full Sun, Partial Sun

Zones

9, 10

Water

Low

Humidity

Moderate to high

Lifespan

Perennial

Native To

Mexico, the West Indies and South America

Toxicity

Non-toxic

Planting

How to Grow

  1. Plant out in full sun after the last frost.
  2. Give it free-draining soil or compost.
  3. Water while establishing, then only in dry spells.
  4. Feed lightly; heavy feeding gives soft, floppy growth.
  5. Leave it be — no deadheading is needed.
  6. Take cuttings in late summer to overwinter it.

Pro Tip

This is the plant to reach for when midsummer heat has stalled everything else in the bed — it flowers hardest exactly then.

Keep It Thriving

Care Guide

Do

  • Give it full sun and real heat ☀️
  • Plant in free-draining soil 🌱
  • Water only when genuinely dry 💧
  • Take cuttings in late summer ✂️

Don't

  • Overwater it — it resents wet roots ❌
  • Bother deadheading; it cleans itself ❌
  • Plant it out before the soil is warm ❌

Seasonal Care Calendar

TaskJanFebMarAprMayJunJulAugSepOctNovDec
Plant Out
Take Cuttings

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Hot sunny summer beddingContainers and patio potsCutting garden for small spikes

Companion Plants

LantanaVerbenaSalviaSweet Potato Vine Zinnia

Multiply

Propagation Methods

Good to Know

Common Questions

Angelonia questions

What zones can Angelonia grow in?

Angelonia 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 Angelonia deer resistant?

Yes — Angelonia is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.

When does Angelonia bloom?

Angelonia typically blooms in summer to frost through late summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Angelonia need full sun?

Angelonia does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.

Is Angelonia drought tolerant?

Yes — once established (usually after the first full season), Angelonia 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 Angelonia 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.