Tibouchina

Growing in Pots, Balconies & Indoors

Tibouchina are tender, spectacular flowering shrubs and small trees (2-10 m) – too large and too light-hungry to be houseplants, as the grower notes. Kept pruned in a large container, though, they are stunning patio plants, and potting lets you shelter them from frost.

Quick Details

• Container Size: A large tub – the bigger the better – with hard pruning to keep it shrub-sized
• Indoor Suitability: Not a houseplant (per the grower) – too big and needs full sun
• Best Spot: Full sun
• Soil & Drainage: Rich, aerated, free-draining, slightly acidic mix
• Watering in Pots: Average and steady; pots dry fast in sun and wind

Indoors & On the Windowsill

• Houseplant limits: The grower marks it no for indoors – it grows too large and craves the sun.
• Overwintering indoors: The key reason to pot it: in cold climates keep it in a tub and move it into a bright, frost-free space over winter.

On a Balcony or Patio

• Light & wind: Give it the sunniest, most sheltered spot; stake the flowering stems and shelter from wind. Walls reflect heat and dry the pot fast, so check moisture often, and mind the weight of a large tub.

Choosing the Pot, Soil & Long-Term Care

• Pot & drainage: Use a pot with strong drainage holes and skip a standing-water saucer, which invites root rot; terracotta breathes and dries faster, while glazed or plastic holds moisture longer.
• Potting mix: A light, aerated organic mix – peat or coir with perlite or vermiculite – gives the roots both moisture and air.
• Feeding: Potted plants use up their feed faster because each watering leaches nutrients away, so feed a little more often than plants in open ground.
• Repotting: Refresh the top of the mix and pot up every couple of years; a light root and top prune at repotting keeps established plants vigorous.

Bloom & Flower Guide

Quick Details

• Bloom Season: Summer – and longer in warm, frost-free climates
• Flower Appearance: Large satiny purple flowers with five petals, singly or in clusters
• Edibility: Not a culinary flower – grown as an ornamental for its vivid blooms

Detailed Blooming Overview

The glory bushes are grown for their brilliant, satiny purple flowers, carried in a long relay against velvety silver-green foliage. Individual blooms are fleeting but freely produced, and the curled purple stamens give each flower its unmistakable character. In warm climates the show can run for much of the year.

Flower Characteristics

• Large, five-petaled flowers in rich, satiny purple.
• Distinctive curved stamens at the center.
• Borne singly or in small clusters at the shoot tips.

Bloom Care & Thinning

• Pruning for bloom: These shrubs flower on new wood, so trimming after a flush brings on fresh flowering shoots.
• Encouraging bloom: Full sun to light shade, shelter and slightly acid soil give the fullest flowering.