Mirabilis expansa

How to Grow Mirabilis expansa

Overview

Mirabilis expansa, also known as "Cachanga" or "Mashua," is a unique and resilient root vegetable that thrives in cold, high-altitude environments. With its potential to yield up to 50,000 kg/ha (45,000 lb/acre) in two years, this plant offers an exciting opportunity for home gardeners seeking a challenging and rewarding growing experience.

Growing Conditions

Mirabilis expansa prefers well-drained soil with a pH level between 6.0 and 7.5. It is best suited to areas with cool temperatures, as the plant can tolerate frost and die back above ground while maintaining hardy roots. In warmer climates, it's essential to provide sufficient shade during the hottest parts of the day.

Planting & Care

Sow Mirabilis expansa seeds directly into prepared soil in late spring or early summer, once the threat of frost has passed. The seeds should be spaced about 30 cm (12 inches) apart, with a row spacing of 75-90 cm (30-36 inches). As the plants grow, thin them out to ensure proper space for development. Water regularly during dry spells and consider mulching to retain moisture and control weeds.

Common Problems

Mirabilis expansa is relatively low-maintenance and resistant to many common pests. However, watch for potential issues like powdery mildew, which can be prevented by ensuring good air circulation around the plants. If fungal diseases occur, treat them with organic fungicides made from natural ingredients like neem oil or baking soda.

Harvest or Enjoy

Harvest Mirabilis expansa roots when they reach a sizeable diameter, typically after 18-24 months of growth. The swollen portion near the soil surface is best for eating, while the tapered end contains fewer nutrients. Wash the roots thoroughly before using them in your favorite recipes, enjoying this unique vegetable's earthy and slightly peppery flavor.

By cultivating Mirabilis expansa in your garden, you'll be able to grow a nutritious