Van der Merwe prune

Description

The Van der Merwe prune is a popular European plum variety (Prunus domestica) celebrated for its sweet, rich flavor and suitability for drying. This deciduous tree typically reaches heights of 12-15 feet and has a compact, rounded canopy. In spring, it produces lovely white flowers that attract pollinators, followed by medium-sized plums that ripen to a dark purple color. The fruit is sweet and juicy, making it ideal for fresh eating, preserves, and drying into prunes.

Ripening

• Generally ready for harvest in late summer to early fall (August to September). Fruit turns a deep purple color. Slightly soft texture when gently pressed. Sweet aroma becomes pronounced as it ripens.

General Information

Climate

• Requires full sun; at least 6-8 hours of direct sunlight daily. Thrives in temperate climates; optimal growth occurs between 70°F to 85°F (21°C to 29°C). Requires winter chilling hours for proper fruit set. Prefers moderate rainfall; well-drained soil is essential to prevent root rot.

Uses

• Culinary:
  • Excellent for fresh eating, baking, and cooking.
  • Ideal for making prunes (dried plums), jams, and jellies.
  • Can be used in desserts, salads, and smoothies.
• Health Benefits:
  • Rich in vitamins A, C, and dietary fiber.
  • Supports digestive health and may help regulate cholesterol levels.

Care Tips

Water

• Watering Frequency: Water regularly, especially during dry periods; deep watering is preferred.
• Seasonal Adjustment: Reduce watering in late summer and fall as the tree prepares for dormancy.
• Soil Moisture: Keep soil consistently moist but avoid waterlogging.

Fertilizing

• Timing: Apply balanced fertilizer (10-10-10) in early spring.
• Amount: Follow package instructions based on the tree’s size and age.
• Cautions: Avoid excessive nitrogen, which can promote foliage growth rather than fruit production.

Pruning

• Timing: Prune annually in late winter or early spring before new growth begins.
• Purpose: Shape the tree, remove dead or diseased branches, and improve air circulation.
• Technique: Maintain an open center to enhance light penetration and reduce disease risk.

Pest Management

• Common Pests: Monitor for aphids, spider mites, and plum curculio.
• Diseases: Watch for brown rot and bacterial leaf spot; consider disease-resistant varieties.
• Control Methods: Use organic pest control methods and encourage beneficial insects.

Harvesting

• Timing: Ready for harvest in late summer to early fall (August to September).
• Indicators: Fully ripe fruit should be deep purple and slightly soft.
• Method: Harvest by gently twisting and pulling to avoid damage.