Purple Star Apple (Caimito) Growing Guide: Care, Pests and Harvest in South Florida

Purple Star Apple (Caimito)

Purple star apple (caimito) is a beautiful tree with shiny green leaves with golden-bronze undersides and sweet, milky purple fruit that shows a star pattern when cut. (Chrysophyllum cainito)

Shop this plant: Purple Star Apple / Caimito Grafted Plant 30+ Inch

Quick Care Summary

  • Sun: Full sun.
  • Soil: Well-drained soil; adapts to sand and limestone.
  • Watering: Regular water the first year.

Sun

Full sun.

Soil

Well-drained soil; adapts to sand and limestone.

Watering

Regular water the first year. Established trees tolerate dry periods but fruit better with steady moisture.

Fertilizer Schedule for South Florida

Balanced fertilizer with minor elements every 2-3 months March-September for young trees; 2-3 times a year for mature trees.

Pruning

Prune after harvest to control height at 15-20 ft and to keep branches within reach.

Cold Protection

Damaged below about 30°F. Protect young trees with frost cloth.

Container vs. In-Ground

Can be kept in a large pot when young; best in the ground long term.

Spacing

20-25 ft apart.

Flowering and Fruiting Timeline

Grafted trees often fruit in 2-4 years. Flowers in summer-fall; fruit ripens in late winter through spring.

Harvest

Fruit doesn't fall when ripe, so clip it. Ripe fruit is dull purple, slightly wrinkled near the stem and gives to pressure. Unripe fruit is very sticky and astringent.

Common Pests and Diseases

Start with organic, low-impact fixes: good airflow, clean-up of fallen fruit and leaves, and soaps or oils before anything stronger. Always follow label directions.

Scale insects

How to identify: Bumps on stems and leaves, sooty mold.

Organic-first treatment: Horticultural oil; control ants.

Caribbean fruit fly

How to identify: Larvae in fruit.

Organic-first treatment: Harvest promptly and remove fallen fruit.

Leaf spots (fungal)

How to identify: Brown spots in wet seasons.

Organic-first treatment: Prune for airflow; copper spray if serious.

FAQ

How do I know caimito is ripe? The skin turns dull and slightly wrinkled near the stem. Don't wait for it to drop.

Is it self-fruitful? Yes.

Is it a good shade tree? Yes, it's ornamental and makes good shade.

Related Reading

Ready to grow your own? Get the Purple Star Apple (Caimito) here.

by Plant Doctor – October 30, 2026