How do I reduce the bitterness?

Soaking sliced fruit in salt water for thirty minutes before cooking helps.

Does it need a trellis?

Yes, it is a vigorous climber that requires sturdy support.

Plant guide

Bitter Melon.

Momordica charantia

Pronounced mo-MOR-di-ka cha-RAN-tee-a

Also known as Balsam Pear, Balsam-pear, Balsampear, Bitter Cucumber, Bitter Gourd, Bitter Melon, Bitter gourd, Bitter melon, Bitter balsam apple, Balsam apple, Wild balsam-apple, Bitter apple, Bitter squash, Bitter cucumber, Bitter gourd, Carilla gourd, Carilla bush, Balsam Pear, Jumbee pumpkin, Maiden apple, Bitter squash

Bitter melon is a fast growing tropical vine known for its unique, bumpy fruit and distinctively bitter flavor. It loves warm weather and thrives when given a sturdy trellis to climb. You will find it is a rewarding plant to grow if you enjoy culinary experimentation.

Another photo of Bitter Melon — Photo by Marco Polo amarillas vargas (CC0) via gbif

At a glance

Care level: Moderate
Plant type: Annual vine
Light: Full sun
Indoor light: Direct sun
Water: Every 2 to 4 days
Mature size: 10 to 15 feet
Growth rate: Fast
Hardiness: USDA 9 to 11
Bloom time: Summer to early autumn

Care

Provide a strong support structure for the vines to climb as they grow quickly during the heat of summer. Keep an eye out for pests like aphids or whiteflies that might hide on the undersides of the leaves. Ensure the soil stays consistently moist but not waterlogged to keep the plant productive.

Watering: Keep the soil consistently moist throughout the growing season.
Feeding: Apply a balanced liquid fertilizer every two weeks to support fruit production.
Pruning: Trim back excessive side shoots to encourage better airflow and fruit development.
Repotting: This plant is typically grown as an annual and does not require repotting.
Soil: Well draining loamy soil
Soil pH: 6.0 to 6.8
Temperature: 18 to 35°C
Humidity: 60 to 90%
Drought tolerance: Low
Lifespan: Annual, typically 1 growing season.
Deer and rabbits: Moderate

Signs it needs repotting

Roots growing out of the drainage holes
Water running straight through the soil without soaking in

Safety

People: All parts of the plant contain cucurbitacins which can cause stomach upset if ingested in large quantities.
Pets: The plant contains compounds that can be harmful to pets if ingested in large quantities.
Children: The bright orange fruit and red seeds are attractive to children but pose a risk of ingestion toxicity.
Contact allergens: The sap may cause mild skin irritation in sensitive individuals.
Airborne allergens: Pollen can trigger mild seasonal allergies in sensitive people.
Edibility: The seeds and red pulp surrounding them can be toxic to some individuals, and the fruit must be prepared correctly to reduce bitterness.

How to identify it

Deeply lobed palmate leaves
Bright yellow five petaled flowers
Warty oblong green fruit
Bright red pulp inside ripe fruit

Height: 2 to 5m
Spread: 0.6 to 1.2m
Leaves: green, deciduous
Flowers: yellow, 2 to 4cm
Fruit: green, yellow, orange, Late summer to autumn

Problems to watch for

AphidsCommon
Cucumber BeetleCommon
Fruit FlyCommon
Powdery MildewCommon
Downy MildewUncommon
Root RotUncommon
Spider MitesUncommon
WhiteflyUncommon

By symptom

Plant problems by symptom

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Growing it

Propagation: seed
When to plant: Spring
Overwintering: This plant is a tender annual and will die with the first frost. Collect seeds from mature fruit to replant next season.
In containers: It grows well in large containers of at least 20 liters with a strong trellis provided.

Seed starting

1. Soak seeds in water for 24 hours to soften the hard coat.
2. Plant seeds 2 centimeters deep in warm, well draining soil.
3. Keep the soil consistently moist and warm until germination.

Plant near nitrogen fixing legumes to provide the extra nutrients this heavy feeder needs.

Grows well with

Beans · They fix nitrogen in the soil which helps the vine grow.
Corn · Corn provides a natural trellis for the vine to climb.

Similar species

Luffa · Both are tropical vining cucurbits that require similar growing conditions.

Science

Family: Cucurbitaceae
Genus: Momordica
Order: Cucurbitales
Class: Magnoliopsida
Native range: Tropical regions of Africa and Asia.
Conservation: Not of conservation concern as it is widely cultivated and naturalized in tropical regions.

This plant thrives in disturbed tropical soils and climbs over other vegetation to reach sunlight.

Value to wildlife: nectar source
Pollinators: bees, butterflies
Uses: culinary, traditional medicine, ornamental vine

Through the year

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Flowering

Fruiting

Foliage

Ecological indicators

Salinity: 2/9
Soil reaction: 6/9
Light: 8/9
Temperature: 8/9
Moisture: 6/9
Nutrients: 7/9

Taxonomy resolved against GBIF.

Questions people ask

How do I reduce the bitterness?: Soaking sliced fruit in salt water for thirty minutes before cooking helps.
Does it need a trellis?: Yes, it is a vigorous climber that requires sturdy support.

Where the name comes from

The genus name Momordica comes from the Latin word for bite, referring to the jagged edges of the seeds, while charantia is a reference to its resemblance to other balsam pears.

Good to know

Bitter melon is a staple in many Asian and Caribbean cuisines.
The fruit turns from green to a vibrant orange when fully ripe.
It is a fast growing vine that loves heat.
The plant is a member of the cucumber family.

Also in

Plants toxic to cats and dogs

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This guide was generated with AI on September 26, 2026 and checked against GBIF taxonomy. It is general information, not horticultural or veterinary advice. Read about how we build these guides.