Ugni molinae: complete guide

Overview

Ugni molinae, known as Chilean guava, strawberry myrtle or murta, is a frost-sensitive, compact shrub from the mountainous regions of Chile and Argentina. This plant belongs to the Myrtaceae family and produces small, aromatic red fruits with a unique guava-like taste. With its glossy, leathery foliage and attractive white flowers in summer, it is a valuable addition to climates where it can grow.

Appearance and harvest

Ugni molinae grows as a compact, densely leafed shrub, usually 60 to 100 centimeters tall. The leaves are small, lance-shaped, glossy dark green with fine texture. The flowers are white to pale pink, approximately 1 centimeter in diameter, and appear in May-June. After flowering, the characteristic red fruits appear, round to oval, approximately 1 to 1.5 centimeters in diameter. The fruits are harvestable in July to October, depending on location.

Ideal location

Ugni molinae thrives best in locations with full sun to light shade, at least four to six hours of direct sunlight daily. In very warm climates, some afternoon shade prevents the fruits from overheating. The plant prefers cooler, temperate climate; it grows optimally in zones where winter temperatures can drop below zero but not more extreme than -5 to -10 degrees Celsius.

Soil

Ugni molinae prefers nutrient-rich, well-draining soil with a pH between 5.0 and 6.5, thus slightly acidic. Rich, organic soils with compost are ideal. Addition of peat lowers the pH and improves moisture retention. Heavy soils can be improved with sand and compost. Good drainage is essential to prevent root rot.

Watering

Watering should take place regularly, especially during the growing period (March to October). The soil should remain moderately moist, but not waterlogged. Water deeply but less frequently than for other fruit shrubs. Mulch around the base with 5 centimeters of organic material to retain moisture and keep roots cool. In dry climates more water is needed; in rainy areas less.

Propagation and feeding

Ugni molinae can be propagated via seeds (slow, uneven) or semi-ripe cuttings in July-August. Feeding is important; apply slow-acting organic feed in March and August. Summer feeding stimulates flowering and fruit setting. Potassium is important for fruit quality. No animal feed needed; organic forms are preferred.

Pruning and maintenance

Pruning is minimal; remove only dead, diseased or crossing branches. Light shaping in February after harvest promotes compact growth. Heavy pruning is not needed as this removes new fruiting wood. Remove small fruits in June to promote larger specimens. Hand self-pollination helps, but insects usually do this.

Maintenance calendar

• February to March: Pruning after harvest, first feeding
• April to May: Leaf growth, flower preparation
• June to July: Flowering, pollination, fruit set
• August: Feeding for fruit development
• September to October: Harvest of ripe fruits
• November to January: Rest period

Winter hardiness

Ugni molinae is winter hardy to about -10 degrees Celsius when well established, making it suitable for mild winter areas. However, young plants are more vulnerable. In areas with harsher winters, protect with burlap or mulch, or grow in containers that can be brought indoors. Regular watering in dry periods in winter helps.

Fruits and harvest

The fruits are edible red with a subtle, unique guava-like taste with a hint of strawberry. Harvest when fully red and soft. Fruits can be eaten fresh, stewed or made into jam. Flavor improves after light frost exposure. Yield is low (0.5 to 1 kg per plant per year in ideal conditions), but quality is excellent.

Closing

Ugni molinae offers unique, gourmet fruits in a compact, attractive shrub. With good drainage, regular watering and temperate climate, you enjoy years of this rare fruit plant. Grow this special plant via gardenworld.app and discover the taste of Chile in your own garden!