Tibouchina

Tibouchina is a tropical evergreen shrub or small tree known for its rich purple blooms and velvety green leaves. Plants commonly sold as Princess Flower (Pleroma urvilleanum, formerly Tibouchina urvilleana) typically grow 6–10 feet tall and 4–6 feet wide when maintained as shrubs, although unpruned specimens may become larger. In Southwest Florida, they are commonly used for individual flowering accents, mixed tropical beds, and informal borders.

Full sun to partial shade supports healthy growth and flowering. Several hours of direct sunlight encourage more blooms, while light afternoon shade may help protect foliage during intense summer heat. Fertile, well-drained soil with organic matter provides suitable conditions for root development.

Allow approximately 4–6 feet between shrubs when planting in groups, depending on their expected mature spread. Individual specimens need enough room for branches to develop without crowding walkways or nearby plants. Sheltered locations help protect the foliage and flowers from strong winds.

Newly planted Tibouchina needs regular watering while establishing its roots. Mature plants prefer moderate, consistent moisture during active growth and flowering. Irrigate when the upper soil begins to dry, avoiding prolonged saturation around the roots.

Purple flowers with prominent, curved stamens appear near branch tips, often in repeated flushes during warm weather. Flowering is generally strongest from summer into fall. Soft, textured leaves provide additional interest between blooming periods.

Growth is moderate to fast under favorable conditions. Light pruning after major flowering periods helps maintain the desired height and encourage fresh branching. Use a balanced, slow-release fertilizer during active growth when needed, avoiding excessive nitrogen that may reduce flowering.

Tibouchina is sensitive to freezing temperatures. Frost can damage tender stems and leaves, although established plants may recover when warm weather returns. Protected planting locations are recommended for inland areas of Southwest Florida.

Why You'll Love It
Purple Flowers: Produces large blooms with prominent stamens that provide seasonal color in tropical garden beds.

Velvety Green Leaves: Soft, textured foliage creates contrast with glossy-leaved shrubs and surrounding plants.

Extended Flowering Period: Flowers develop in repeated flushes during warm weather, particularly from summer through fall.

Flowering Landscape Accent: Can be maintained as a shrub or trained into a small ornamental tree, depending on the selection.

Naturally Branching Growth: Develops a broad form suitable for mixed garden beds and informal flowering borders.

Sun Requirements: Performs best in full sun to partial shade, with brighter locations generally supporting stronger flowering.

Water Needs: Maintain moderate, consistent moisture during active growth. Allow the upper soil to begin drying between waterings.

Mature Size: Approximately 6–10 feet tall and 4–6 feet wide when maintained, with larger growth possible.

Best Uses: Tropical landscape beds, flowering borders, ornamental garden accents, foundation plantings, sheltered courtyards, and large outdoor containers.