The Inga genus is a group of tropical shrubs and trees, with nitrogen-fixing roots, belonging to
the Legume family. One of the most well-known members of this genus is Inga edulis, the Ice Cream Bean.
Inga feuilleei, Pacay, with similar bean pods, is more cold-hardy and heat tolerant. Inga genus plants are
distantly related to other legume family members with edible bean pods or filling, such as Carob, Tamarind and
Leaf retention: Evergreen.
Growth rate: Temperature and water dependent. Rapid in warm, rainy regions.
Mature Size: 20-30' high and as wide.
Flowers: A tuft of white stamens extend from a light green tube of five fused petals. The flowers
are clustered at the end of flowering stems.
Self-fruitful: No. This plant is self-incompatible. A second tree is required.
Years before fruiting: 7-10 years from seed.
Fruit: A flat bean pod, up to 31" long and 2-3" wide, with a white fibrous filling surrounding
hard seeds. The filling is eaten raw and has a taste resembling vanilla ice cream.
The seeds can be boiled and ground into an edible flour.
Months for fruit to ripen: 8.
Storage after harvest: The bean pod filling is perishable and should be consumed immediately
after the pod is snapped open.
Leaves: Dark green. Five leaflets per cluster. Moderate shade.
Stems: No thorns.
Roots: Strong, invasive and destructive.
Wildlife: Attracts bees, butterflies, and hummingbirds. Leaves browsed by mammals
and used to feed livestock. Bean pods consumed by mammals.
Toxic / Danger: No.
Cultivation and Uses
USDA hardiness zones: 9b-12. Young plants are killed at 32°F, older plants survive to 25°F.
Chill hours: None.
Heat tolerant: To 95°F in native region.
Sun: All day part shade, especially afternoon shade, over 90°F.
Drought tolerant: Not without loss of fruit crop. Native to high rainfall regions.
Water after becoming established: Deep water using basin irrigation, twice a week when
flowering and fruiting. The tree does better with high humidity, so extra water during hot,
dry days is beneficial. Deep watering will encourage deeper roots.
Soil: Well drained, tolerant of soil conditions, pH 5.1-7.8 (strongly acidic to slightly alkaline).
Performs better with moderate organic content. Some varieties tolerate flooding.
Fertilize: A nitrogen fertilizer is unnecessary because the roots are nitrogen fixing.
Use a 0-10-0 ratio fish emulsion-based fertilizer applied monthly to provide potassium.
Mix 2-3 tablespoons of magnesium sulfate in water, and pour around the drip line of the tree every
month, to supply magnesium. The tree has low salt tolerance.
Mulch: Yes, to retain moisture.
Spacing: 10-30', depending on annual pruning.
Planting: Can be grown in a large container.
First Year Care: Protect from freezing.
Prune: Can be shaped. Can be severely pruned after 4 years in the ground to maintain a low canopy.
Litter: Seed pod drop.
Propagation: Seed, cuttings. Seed are viable only for a few weeks, cannot withstand
drying or freezing, and often sprout inside the pod.
Uses: Edible pod filling and seeds. These trees are used to provide nitrogen to tropical soils,
as shade trees for sun sensitive food crops, and when cut low (pollarded), to provide forage for cattle.
Several Inga species are sold under the Ice Cream Bean name and may vary from the description
on this page.
Do you have additional information or a different
experience for this plant that you would like to share?
Email firstname.lastname@example.org. All contributions
are welcome and appreciated.