Native & adapted

Bilimbi

Averrhoa bilimbi

Also known as Cucumber tree · Tree sorrel · Kamias · Khế tàu

A close relative of starfruit that bears clusters of small, very sour green fruit right on its trunk. A tender tree for the warmest yards or a large pot.

EdibleFruitingContainer friendlyFrost tender

Landscape layersLower canopy

Mature size10–15 ft tall and 8–10 ft wide in Phoenix

Climate fitUrban core · USDA 9b–10a

Plant spacing10 ft from other trees

FrostDamaged at 32°F; killed by hard frost.

Special categoriesEDIBLE

Hardiness guidanceUSDA 10b–11; damaged near 32°F

Winter chillNone

Typical harvestFruits in flushes through the warm months.

Before you plant

These conditions determine whether it will thrive.

Soil chemistry

Fast-draining soil rich in compost. Phoenix soil is alkaline, so work in soil sulfur and organic matter and use chelated iron if new leaves turn yellow between the veins.

Required microclimatePlacement is part of the growing system.

Warmest sheltered spot or a large container that can be moved under cover.

Right plant, right place

Will Bilimbi grow at your Arizona property?

Very frost tender. Treat as a container or courtyard plant.

Best regional fit: Urban core · USDA 9b–10a.

Light

Sun exposure

Morning sun with afternoon shade from June through September, such as the east side of a house or under a taller nurse tree. Protect from frost on winter nights.

Water

Irrigation

Moderate to high and steady.

Fruit set

Pollination

Self-fertile.

Harvest

How to use it

Too sour to eat fresh; used in pickles, chutneys, curries and as a souring agent.

Planting & stewardship

How to help Bilimbi thrive

1
Shade from afternoon sun.
2
Keep soil evenly moist.
3
Cover or move under shelter on frost nights.
4
Feed lightly every 6 to 8 weeks in the warm season.

Read the horticultural reference ↗