Sharp-angled Guava (Psidium acutangulum)

Sharp-angled Guava

Psidium acutangulum

Its angular branches hold tart, aromatic fruits, a tropical edible gem. Evergreen fruiting shrub; common name: sharp-angled guava.

Full sun
2–3/week
Moderate
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Plant Needs

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Sunlight Full sun to partial shade; full sun encourages optimal fruit production, while dappled shade is tolerated in hot tropical climates
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Watering Water deeply when the top 2–3 cm of soil dries out; avoid waterlogging to prevent root rot
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Temperature Thrives in warm tropical to subtropical temperatures; protect from frost below 10°C to prevent leaf and stem damage
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Characteristics

  • Leaf: Elliptic to oblong, glossy dark green, opposite arrangement, 5–10 cm long with entire margins
  • Flower: Fragrant white 5-petaled blooms with dense, prominent yellow stamens
  • Stem: Young branches are angular and reddish-brown, maturing to gray, fissured bark
  • Fruit: Ovoid yellow-green berry, 2–4 cm long, with tart, aromatic edible flesh containing small seeds
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Care Guide

Watering

Keep soil consistently moist during active growth and fruiting periods

Fertilization

Apply balanced, slow-release fertilizer every 4 weeks. Reduce fertilization in autumn and winter when growth slows significantly

Banana peel compost tea:Use fully composted banana peels steeped in water for 24 hours, diluted 1:20 for root drench; avoid raw peels to prevent pest infestations
Pruning
  • Prune dead, diseased, or crossing branches in early spring to improve airflow and light penetration
  • Thin overcrowded inner branches to promote fruiting wood development
  • Remove suckers growing from the base to direct energy to main stems and fruit production
  • Shape the shrub to maintain desired size after fruiting season
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Non-toxic to cats; no reported adverse effects

Humans: No known toxic compounds; fruits are safe for human consumption

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Garden Uses & Culture

Culture: N/A

Usage: Edible fruit used for jams, jellies, or fresh consumption; ornamental foliage for tropical garden borders