Nipple fruit (Solanum mammosum) - How to Grow & Care Guide

Plant Snapshot

Common Name: Nipple fruit
Latin Name: Solanum mammosum
Alternate Names: cow's udder, titty fruit, apple of Sodom (regional names vary)
Hardiness Zones: USDA zones ~10–11; frost tender. In colder zones plants will suffer dieback or need protection. In warm zones it can grow year round and fruit more reliably.
Typical Height: About 3–10 ft (100–300 cm) at maturity for cultivated shrubs
Typical Spread: Typically 3–6 ft (90–180 cm) spread for mature shrubs
Soil Preferences: Prefers fertile, well drained soil. Tolerates average garden soils but dislikes waterlogged ground. Good organic matter improves growth and fruiting.
Light Preferences: Full sun to part shade. Best fruit set and form in full sun in warm regions. Provide afternoon shade in very hot climates to reduce leaf scorch.
Toxicity: Plant parts including fruit contain toxic alkaloids. Not for consumption by humans or pets. Handle with care and keep away from children and animals.
Propagation: Propagate by seed from ripe fruit. Cuttings may root but seed is the most common method.

Key Facts

Tropical shrub or small tree grown mainly as an ornamental
Distinctive yellow to orange oblong fruits with nipple like protrusions
Fruits and other plant parts contain toxic alkaloids and are not edible
Propagated readily by seed from ripe fruit
Prefers well drained soils and warm, humid conditions
Performs best in full sun or bright light with some afternoon shade in hot climates
Generally frost tender and confined to warm temperate to tropical gardens
Used in floral arrangements and cultural decorations in some regions

Nipple fruit is a tropical ornamental shrub noted for unusual yellow to orange oblong fruits that have nipple like protrusions. The plant is grown for striking decorative fruit and cultural arrangements but the fruit and foliage contain toxic alkaloids and are not edible.

Identification

Nipple fruit forms a bushy shrub or small tree that commonly reaches about 3 to 10 feet in cultivation and spreads roughly 3 to 6 feet across. Leaves and habit resemble other solanums while fruits are oblong and often bright yellow or orange with distinctive nipple shaped projections that make the plant a decorative specimen.

Where to grow and best uses

Grow nipple fruit in warm temperate to tropical gardens where frosts are rare, typically within USDA zones 10 and 11. Use it as a focal specimen, in mixed tropical borders, or as a source of decorative fruit for arrangements. In cooler climates it can be grown in containers and moved indoors when temperatures drop.

Planting and spacing

Plant nipple fruit in a sunny to partly shaded spot with good air circulation. Allow space based on mature spread which is commonly about 3 to 6 feet so plants do not crowd one another. Choose a well drained site to avoid root problems and place containers where they get bright light for best form and fruiting.

Soil light and watering

The plant prefers fertile well drained soil and tolerates average garden soils as long as drainage is good. It performs best in full sun or bright light with some afternoon shade in very hot locations. Water regularly to keep growth healthy but avoid waterlogged ground which leads to root loss and decline.

Pruning and after flowering care

Prune nipple fruit to maintain shape and to encourage bushy growth. Remove dead or crossing branches and cut back woody stems to control size. Harvest or remove ornamental fruit when spent and handle with care because all parts of the plant are poisonous if ingested and may irritate sensitive skin.

Propagation

Propagate mainly by seed from ripe fruit which is the most common method used in cultivation. Semi hardwood cuttings may root in some situations but seed gives reliable results. Wear gloves and wash hands after handling fruits or cut material to avoid exposure to toxic plant sap.

Containers and seasonal care

Container culture extends use to cooler climates and lets you move plants inside before frost. Provide bright light and warm humid conditions for best performance while plants are container grown. Reduce watering in cooler indoor conditions and repot into fresh well drained mix to refresh nutrients before the growing season.

Control and volunteers

Nipple fruit is not widely reported as an aggressive invasive in cultivation and is generally confined to warm gardens where it is deliberately grown. Control spread by removing volunteer seedlings and pruning seed bearing fruit if you do not want plants to self seed. Dispose of fruit carefully because it is poisonous to humans and animals.

Frequently asked questions

How fast does Nipple fruit grow?: Growth rate varies with climate and care. Under warm humid conditions with good soil and light plants show moderate growth and commonly reach about 1 to 3 meters at maturity over several years.
Is Nipple fruit edible?: No. Fruits and other parts contain toxic alkaloids and are not for consumption. Keep plants away from children and pets and consult poison control or a veterinarian for suspected ingestion.
How do I propagate Nipple fruit?: Seed from ripe fruit is the easiest and most common method. Semi hardwood cuttings may root but seed generally gives more reliable results. Handle seeds and fruit with care because the plant is poisonous.
Can I grow Nipple fruit in a pot?: Yes. Container culture lets you grow the plant outside warmer months and move it indoors before frost. Use a well drained potting mix and place the container where it receives bright light for best form and fruiting.
What hardiness zones are suitable for Nipple fruit?: Plants perform best in warm temperate to tropical conditions and are generally frost tender. Outdoor cultivation is commonly limited to USDA zones 10 and 11 while containers can extend usability in cooler areas.