Interesting Facts
Members of this genus are mostly native to Brazil, but they can be found as far north as the wetter regions of tropical Mexico. They are sometimes called spider flowers since the inner parts of the flowers resemble a spider's legs creeping out from in between the petals. 
Princess Flowers are tropical plants that can bloom throughout the year if the weather is permissable. These plants can be rather invasive in Hawai'i, but when grown elsewhere they make nice outdoor shrubs that provide nice splashes of purple from their unique looking flowers.
| Plant Types: | Perennial, Shrub, Tropical |
| Light: | Partial Shade to Full Sun |
| Height: | 10 feet to 20 feet |
| Width: | 6 feet to 10 feet |
| Zones: | 13a to 15b |
| Bloom Color: | Purple |
| Bloom Seasons: | Early summer, Mid summer, Late summer, Early fall, Mid fall, Late fall |
| Leaf Color: | Green, Red |
| Shape: | Upright or erect |
| Type of Soil Preferred: | Acidic, Neutral |
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Plant Care
Planting:
Sow seeds when the weather warms in spring and reaches at least 60F. Stem cuttings can be made in late spring and summer as long as bottom heat is provided.
Sow seeds when the weather warms in spring and reaches at least 60F. Stem cuttings can be made in late spring and summer as long as bottom heat is provided.
Plant Growth:
Tibouchinas can withstand full sun, however, they will need protection from the sun in warmer climates. If temperatures hover around freezing, the plants may die back. Fortunately, Tibouchinas will often times bounce back in the spring.
Tibouchinas can withstand full sun, however, they will need protection from the sun in warmer climates. If temperatures hover around freezing, the plants may die back. Fortunately, Tibouchinas will often times bounce back in the spring.
Blooming:
Constant deadheading can prolong flowering.
Constant deadheading can prolong flowering.
Soil and Irrigation:
Does best with regular water in soils that retain moisture and that are moderately fertile. Water freely during the normal growing season.
Does best with regular water in soils that retain moisture and that are moderately fertile. Water freely during the normal growing season.
Fertilization:
Give a balanced liquid fertilizer once per month during the growing season.
Give a balanced liquid fertilizer once per month during the growing season.
Pruning:
Prune each year in mid spring. Remove tips of shoots that causes assymetry in the canopy.
Prune each year in mid spring. Remove tips of shoots that causes assymetry in the canopy.
Pests:
Prone to root rot, leaf spots and spider mites if there is not sufficient air circulation.
Prone to root rot, leaf spots and spider mites if there is not sufficient air circulation.