Jooni

Brazilian rain tree

1 Species

Species

Pithecellobium tortum

Fertilizing

Apply a balanced liquid fertilizer weekly during the growing season to promote healthy growth and maintain the tree's vigor. During winter months, reduce fertilization to once monthly. This regular feeding schedule ensures proper nutrition while accommodating the tree's natural growth cycles and seasonal needs.

Placement

The Brazilian Rain Tree can be kept indoors but requires abundant light, making it versatile for both indoor and outdoor cultivation. Place it outdoors in a sunny location during the growing season, but bring it inside when temperatures drop below 45°F (7°C). When indoors, position near a south-facing window or under grow lights. During peak summer heat, provide some afternoon shade to prevent leaf burn. Unlike many bonsai species, this tropical tree adapts well to indoor conditions, making it particularly suitable for growers in cooler climates.

Pruning

When pruning the Brazilian Rain Tree, always leave small stubs rather than making flush cuts, as this species is prone to die-back. Avoid using concave cutters, instead opting for straight cuts that can be refined once the stub has dried. Regular shoot trimming helps maintain the desired shape, while the clip-and-grow method proves most effective for long-term development. While traditional wiring is possible, guy-wires often work better for this species, particularly on green branches. Most Brazilian Rain Trees are styled in upright forms, reflecting their natural growth pattern.

For structural development, focus on establishing the primary branch structure before detailed pruning. Remember this tree is very spiny, so wear appropriate protection when working on it. The upright nature of the tree makes it particularly suitable for formal upright and informal upright styles, though other forms are possible with careful training.

Repotting

Repot your Brazilian Rain Tree every two to three years in spring, using a well-draining soil mix. Too much organic material in the soil can lead to root rot, fungal problems, and branch die-back, so opt for a faster-draining mixture. Perform moderate root pruning during repotting, but avoid heavy root reduction. After repotting, wait approximately four weeks before resuming fertilization to allow the root system to recover and reestablish. This timing and approach help maintain the tree's health while promoting proper root development.

Watering

Maintain even moisture in the soil, never allowing it to completely dry out while being careful not to overwater. When kept indoors, humidity becomes particularly important - use a humidity tray filled with pebbles and water to maintain adequate moisture levels in the air. Regular misting can help, especially in dry indoor environments, but shouldn't replace proper watering practices. Monitor the soil moisture daily, as indoor environments can cause irregular drying patterns.

References