North America Native Plant

Mexican Orange

Botanical name: Choisya dumosa

USDA symbol: CHDU

Life cycle: perennial

Habit: shrub

Native status: Native to the lower 48 states  

Mexican Orange: A Hardy Native Shrub for Southwestern Gardens If you’re looking for a tough-as-nails native shrub that can handle the heat and still look good doing it, let me introduce you to Mexican orange (Choisya dumosa). This unsung hero of the Southwest deserves a spot in more gardens, especially ...

Mexican Orange: A Hardy Native Shrub for Southwestern Gardens

If you’re looking for a tough-as-nails native shrub that can handle the heat and still look good doing it, let me introduce you to Mexican orange (Choisya dumosa). This unsung hero of the Southwest deserves a spot in more gardens, especially if you’re tired of babying plants that wilt at the first sign of drought.

Meet Your New Low-Maintenance Garden Buddy

Mexican orange is a true native of the American Southwest, naturally occurring across Arizona, New Mexico, and Texas. As a perennial shrub, this multi-stemmed beauty typically grows to about 3 feet tall and wide, making it a perfect mid-sized addition to your landscape. With its moderate growth rate, you won’t be waiting forever to see results, but you also won’t be constantly pruning it back.

Why You’ll Fall for This Tough Cookie

What makes Mexican orange such a winner? Let’s count the ways:

  • Stunning white flowers: Late spring brings a display of conspicuous white blooms that brighten up the garden
  • Year-round appeal: Dense, dark green foliage looks good in all seasons, with fall bringing particularly eye-catching color
  • Drought champion: Once established, this plant laughs in the face of dry spells
  • Low-fuss personality: Minimal fertilizer needs and high tolerance for challenging conditions

Perfect Spots for Mexican Orange

This adaptable shrub shines in native plant gardens, xeriscapes, and any landscape where you want maximum impact with minimal input. Its semi-erect form and moderate size make it ideal for:

  • Foundation plantings
  • Mixed shrub borders
  • Drought-tolerant garden beds
  • Wildlife-friendly landscapes

Growing Conditions That Make It Happy

Mexican orange is remarkably easygoing, but like all plants, it has its preferences:

  • Sunlight: Full sun is a must – this plant is shade intolerant
  • Soil: Thrives in coarse to medium-textured soils with excellent drainage
  • pH tolerance: Amazingly adaptable, handling anything from 6.4 to 9.5
  • Water needs: Low once established (8-18 inches annual precipitation)
  • Climate: Best in USDA zones 9-10, needing at least 300 frost-free days

Planting and Care Tips

Getting your Mexican orange established is refreshingly straightforward:

  • When to plant: Spring or fall for best establishment
  • Spacing: Allow 3-4 feet between plants for mature spread
  • Watering: Regular water the first year, then back off significantly
  • Fertilizing: Skip it – this plant prefers lean conditions
  • Pruning: Minimal needed, but it tolerates hedging well if desired

The Bottom Line

Mexican orange proves that native plants don’t have to be boring or difficult. With its attractive white flowers, dense evergreen foliage, and incredible drought tolerance, it’s a smart choice for gardeners who want beauty without the high maintenance. Plus, you’ll be supporting local ecosystems by choosing a plant that evolved right in your backyard.

While it may not be the showiest plant at the garden center, Mexican orange is the kind of reliable performer that makes gardening in challenging climates not just possible, but enjoyable. Give this southwestern native a try – your future self (and your water bill) will thank you.

How

Mexican Orange

Grows

Growing season

Spring, Summer, Fall

Lifespan

Long

Growth form & shape

Multiple Stem and Semi-Erect

Growth rate

Moderate

Height at 20 years

3

Maximum height

3.0

Foliage color

Dark Green

Summer foliage density

Dense

Winter foliage density

Dense

Foliage retention

Yes

Flowering

Yes

Flower color

White

Fruit/seeds

No

Fruit/seed color

Brown

Allelopath

No

Nitrogen fixing

None

Toxic

None

C:N Ratio

High

Fire Resistant

No

Foliage Texture

Coarse

Low-growing Grass

No

Resproutability

Yes

Coppice Ability

No

Bloat

None

Mexican Orange

Growing Conditions

Adapted to Coarse Soil

Yes

Adapted to Medium Soil

Yes

Adapted to Fine Soil

No

Anaerobic tolerance

None

CaCO₃ tolerance

High

Cold Stratification

No

Drought tolerance

High

Nutrient requirement

Low

Fire tolerance

Low

Frost-free days minimum

300

Hedge tolerance

High

Moisture requirement

Low

pH range

6.4 to 9.5

Plants per acre

1200 to 2700

Precipitation range (in)

8 to 18

Min root depth (in)

18

Salt tolerance

High

Shade tolerance

Intolerant

Min temperature (F)

17

Cultivating

Mexican Orange

Flowering season

Late Spring

Commercial availability

Contracting Only

Fruit/seed abundance

None

Fruit/seed season

Summer to Fall

Fruit/seed persistence

No

Propagated by bare root

Yes

Propagated by bulb

No

Propagated by container

Yes

Propagated by corm

No

Propagated by cuttings

Yes

Propagated by seed

No

Propagated by sod

No

Propagated by sprigs

No

Propagated by tubers

No

Seed per pound
Seed spread rate

None

Seedling vigor
Small grain

No

Vegetative spread rate

None

Mexican Orange

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Rosidae

Order

Sapindales

Family

Rutaceae Juss. - Rue family

Genus

Choisya Kunth - Mexican orange

Species

Choisya dumosa (Torr.) A. Gray - Mexican orange

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA