North America Native Plant

Wild Tamarind

Botanical name: Cojoba arborea

USDA symbol: COAR9

Life cycle: perennial

Habit: tree

Native status: Native to Puerto Rico  

Synonyms: Pithecellobium arboreum (L.) Urb. (PIAR3)   

Wild Tamarind: A Tropical Native Beauty for Your Garden If you’re looking to add some tropical flair to your garden while supporting native ecosystems, meet the wild tamarind (Cojoba arborea). This stunning Puerto Rican native brings year-round beauty and ecological benefits to warm-climate landscapes, making it a fantastic choice for ...

Wild Tamarind: A Tropical Native Beauty for Your Garden

If you’re looking to add some tropical flair to your garden while supporting native ecosystems, meet the wild tamarind (Cojoba arborea). This stunning Puerto Rican native brings year-round beauty and ecological benefits to warm-climate landscapes, making it a fantastic choice for gardeners in frost-free zones.

What Makes Wild Tamarind Special?

Don’t let the name fool you – wild tamarind isn’t actually related to the tamarind you might know from cooking. This perennial tree is a completely different species that earned its common name from its similar-looking seed pods. Also known scientifically as Cojoba arborea (previously called Pithecellobium arboreum), this gorgeous tree is all about making a statement in your landscape.

Wild tamarind is native to Puerto Rico, where it thrives in the island’s tropical climate. For mainland gardeners, this means it’s perfectly suited for similar warm, humid conditions found in USDA hardiness zones 10-11.

A Tree That’s Easy on the Eyes

This tree is a real showstopper with its delicate, fine-textured foliage that stays a rich dark green throughout the year. The compound leaves create a soft, feathery appearance that adds elegance to any landscape. But the real magic happens during winter blooming season, when the tree bursts into clouds of white, pom-pom-like flowers that are both conspicuous and absolutely charming.

After the flowers fade, you’ll be treated to another visual treat: bright red seed pods that add a pop of color against the dark green foliage. At maturity, wild tamarind reaches about 56 feet tall, though it can grow up to 84 feet under ideal conditions after 20 years – making it perfect for creating substantial shade or serving as a focal point specimen tree.

Perfect for Tropical and Native Plant Gardens

Wild tamarind shines in several garden settings:

  • Native plant gardens: As a true Puerto Rican native, it supports local ecosystems
  • Tropical landscapes: Its exotic appearance fits perfectly with other tropical plants
  • Shade gardens: Creates excellent canopy coverage with its dense foliage
  • Specimen planting: Makes a striking focal point when given room to show off

Supporting Wildlife and Pollinators

Those beautiful white winter blooms aren’t just for show – they’re a valuable nectar source for bees and other pollinators during the cooler months when many other plants aren’t flowering. As a member of the legume family, wild tamarind also provides some nitrogen fixation benefits to the soil, though at relatively low levels.

Growing Conditions: What Wild Tamarind Needs

Wild tamarind is surprisingly specific about its growing conditions, but once you meet its needs, it’s relatively low-maintenance:

  • Climate: Requires a frost-free environment (minimum temperature 40°F) with 365+ frost-free days per year
  • Soil: Prefers coarse-textured, well-draining soils with medium fertility
  • pH: Tolerates a range from 6.0 to 8.5, with medium tolerance for limestone soils
  • Rainfall: Needs 30-75 inches of precipitation annually
  • Sun: Performs best in full sun locations

Planting and Care Tips

Getting your wild tamarind established is straightforward:

  • Propagation: Grown from seed (about 1,760 seeds per pound) – no special cold treatment needed
  • Planting density: Space trees 320-640 per acre for forest plantings, or give individual specimens plenty of room in landscape settings
  • Root depth: Ensure at least 36 inches of soil depth for proper root development
  • Maintenance: Once established, it’s relatively low-maintenance but doesn’t tolerate heavy pruning or hedge-style trimming well

Keep in mind that wild tamarind doesn’t have strong resprouting ability, so avoid damage to the main trunk, and it has medium fire tolerance, making it suitable for areas with occasional wildfire risk.

Is Wild Tamarind Right for Your Garden?

Wild tamarind is an excellent choice if you:

  • Live in USDA zones 10-11 with consistently warm temperatures
  • Have well-draining, coarse soil
  • Want to support native ecosystems and pollinators
  • Appreciate unique winter blooms and colorful seed pods
  • Need a substantial shade tree or specimen plant

However, it might not be the best fit if you’re dealing with heavy clay soils, frequent freezing temperatures, or limited space (remember, this tree gets quite large!).

For gardeners in the right climate zones, wild tamarind offers a unique opportunity to grow a truly special native tree that combines beauty, ecological value, and relatively easy care. Its winter blooming period makes it especially valuable for providing color and pollinator resources during the cooler months when your garden might otherwise be taking a break.

How

Wild Tamarind

Grows

Growing season
Lifespan
Growth form & shape
Growth rate
Height at 20 years

84

Maximum height

56.0

Foliage color

Dark Green

Summer foliage density

Dense

Winter foliage density

Dense

Foliage retention

Yes

Flowering

Yes

Flower color

White

Fruit/seeds

Yes

Fruit/seed color

Red

Allelopath

No

Nitrogen fixing

Low

Toxic
C:N Ratio
Fire Resistant

No

Foliage Texture

Fine

Low-growing Grass

No

Resproutability

No

Coppice Ability

No

Bloat

None

Wild Tamarind

Growing Conditions

Adapted to Coarse Soil

Yes

Adapted to Medium Soil

No

Adapted to Fine Soil

No

Anaerobic tolerance
CaCO₃ tolerance

Medium

Cold Stratification

No

Drought tolerance
Nutrient requirement

Medium

Fire tolerance

Medium

Frost-free days minimum

365

Hedge tolerance

Low

Moisture requirement
pH range

6.0 to 8.5

Plants per acre

320 to 640

Precipitation range (in)

30 to 75

Min root depth (in)

36

Salt tolerance
Shade tolerance
Min temperature (F)

40

Cultivating

Wild Tamarind

Flowering season

Winter

Commercial availability
Fruit/seed abundance
Fruit/seed season

Spring to Fall

Fruit/seed persistence

No

Propagated by bare root

No

Propagated by bulb

No

Propagated by container

No

Propagated by corm

No

Propagated by cuttings

No

Propagated by seed

Yes

Propagated by sod

No

Propagated by sprigs

No

Propagated by tubers

No

Seed per pound

1760

Seed spread rate
Seedling vigor
Small grain

No

Vegetative spread rate

Wild Tamarind

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

Fabales

Family

Fabaceae Lindl. - Pea family

Genus

Cojoba Britton & Rose - cojoba

Species

Cojoba arborea (L.) Britton & Rose - wild tamarind

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