Tibouchina urvilleana - location and care

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Tibouchina blossom

The native of Brazil Tibouchina urvilleana is predestined in the local regions for the room culture. However, the princess flower only unfolds its true beauty when it can enjoy the sunshine on the balcony during the summer. As a result, shortly before the fall, she spreads her purple and purple peel blossoms over velvety leaves, which earned her the name of Violet Tree. The requirements that the exotic black-and-white plant places on the location and its care can be found out here.
A look at the light and temperature conditions at the natural location gives helpful information, where a Tibouchina urvilleana likes it. The flowering shrub is native to southeastern Brazil with a typically tropical climate with year round warm temperatures over 18 degrees Celsius, a rainy summer, a dry winter and 12 hours of sunshine daily. The princess flower is therefore well disposed to you, if it is placed in this position:
  • Sunny, warm location
  • Protected against draft and violent winds
  • From May to August / September in the sunlight in the open air
  • Alternatively at the south window, which is shaded at lunchtime
Direct UV light has a beneficial effect on compact growth and large flowers. If the sunlight is filtered through window panes, however, the branches tend to lengthen. When temperatures fall below 10 degrees Celsius, the violet tree leaves its summery place on the balcony to blossom in the house or heated conservatory.
Tip: In partial shade and shade, the evergreen princess flower loses its foliage and does not develop flowers.


The noble Tibouchina urvilleana requires a structurally stable substrate, which on the one hand is well drained and on the other hand provides sufficient support for the roots. A high-quality potted soil, enriched with lava granules and expanded clay, should therefore be given preference over low-cost potting soil. The lower the peat content, the better the substrate meets the requirements of a princess flower.
Pouring and fertilizing
The proper care of a Tibouchina urvilleana is not least based on a balanced water and nutrient balance. Extreme fluctuations in one direction or the other are punishable by immediate drops of flowers and leaves. How to handle it correctly:
  • Pour pervasive in the summer when the surface of the substrate dries
  • Determine the water requirement daily using the thumb sample
  • Do not leave water in the coaster to avoid waterlogging
  • Ideally pour with collected rainwater or decalcified tap water
  • Every 7-10 days, apply liquid fertilizer for flowering plants from April to November
  • A dosage of 2 grams of fertilizer per liter of irrigation water is sufficient
Although the foliage is softly hairy, abundant moisture evaporates over the lush biomass during the summer. Therefore, make sure that the root ball does not dry out. This is accompanied by the preference to pour less frequently and penetratingly rather than often and in small quantities. The irrigation water is added directly to the root area and not over the foliage. If you do not want to think about fertilization every week, you can apply a slow-release fertilizer in the form of sticks or cones that are pressed into the substrate. The nutrients dissolve in small portions at the same time as every pour, so that only every 6 to 8 weeks is allowed to be followed.
Tip: A pebble filled with pebbles and water not only prevents harmful waterlogging. At the same time, the rising evaporation creates a tropical-humid climate beneficial to the health of the leaves.
To cut

Princess flower

A repeated, careful pruning is one of the mainstays in the professional care of a Tibouchina urvilleana. Since the plant branches only hesitantly, frequent pruning is indispensable. Strive for a rich branching of the violet tree, with as many flowers as possible, proceed as follows:
  • Cut back at least 3 times a year: in March, beginning / middle of May and mid / end of June
  • Shorten the growth of shoots to half or one third
  • Do not cut into the old wood, as there is rarely a new shoot
  • In principle, use freshly sharpened, disinfected tools
A young princess shrub is trimmed at the beginning after each pair of leaves to form a compact habit. In addition, after flowering, the shoot buds continue to thrive in the leaf axils of the upper shoot. Cut back to the lowest bud at this point, immediately after the flower. The incision is made in a slight inclination 3-5 millimeters above the bud, because too long stubs weaken the plant and make them susceptible to diseases and pests.
A Tibouchina urvilleana is especially vigorous at a young age. As a result, within a year she roots her pot in an instant.The move to a larger bucket should therefore be scheduled for the early spring on the care plan, if this year's sprouting is imminent. This is how you proceed correctly:
  • The new planter is a maximum of 5-10 cm in diameter larger
  • In the bottom of the pot is an opening as a drain or is drilled manually
  • Drainage from potsherds, lava granules, pebbles or pumice prevents waterlogging
  • Fill the bucket halfway with the recommended substrate and push a hollow into it with your fist
  • Pot the princess flower, put it in the middle of the fresh soil, plant and water
  • So that no irrigation water spills over later, a pouring rim of 5 cm remains free
If you choose a considerably larger bucket, this decision will be at the expense of flowering in the first year after repotting. The violet tree will make a diligent effort to root through the large pot, investing in it the energy that was supposed to serve the flower.
Tip: Experienced hobby gardeners take a close look at the root ball of a stuffed Tibouchina urvilleana. The old substrate is completely removed to excise diseased and foul roots with a sharp, disinfected knife.
Diseases and pests

Tibouchina urvillena

The princess bush is generally considered to be resistant to diseases and pests. If problems arise, they are usually due to neglect of care. The following health problems can occur:
spider mites
Too dry air during winter calls spider mites on the scene. The tiny pests initially spread on the undersides of the leaves, recognizable by yellowish-brown speckles and white webs. With lime-free water, you are effective against the leaf suckers. Nearby placed humidifiers or bowls filled with water make the environment for spider mites so uncomfortable that the pests withdraw.
Yellow leaves
One of the most common malicious pictures on a Tibouchina urvilleana is in the form of yellow leaves. This problem can be due to various causes, which can be remedied by simple measures. This is how it works:
Cause: to calcareous water
As a true child of the tropics, the princess flower relies on lime-free or lime-free irrigation water. If hobby gardeners only use hard tap water, chlorosis occurs. The lime binds important iron in the substrate, which is responsible, among other things, for the green leaf color. Switch to collected rainwater or decalcified tap water, the plant recovers.
Cause: Draft
If a violet tree is on the windowsill or in close proximity to a window, ventilation should not be provided at this point. Especially in winter, there is an undesirable cold draft, which shocks the plant so that the leaves turn yellow.
One of the most devastating pictures of the princess shrine is the progressing dislocation from within. The faster you counteract this, the better the chance of rescue. Immediately place the plant in the brightest position on the south window and protect it from cold drafts. In addition, the water supply should be subjected to a test, since both too dry and a drenched root ball can cause the aging. In the end, take a courageous pruning of the shoots by half or two-thirds.
The exotic Tibouchina urvilleana carries in autumn and winter tropical flower fullness in the house or conservatory. For the princess flower to do its best, it depends on the right location and a professional care. The beauty of the flowers should be set up sunny and warm, ideally in the summer on the sunlit balcony. A balanced water and nutrient balance and a three-time pruning a year are among the mainstays of care.

Video Board: Tibouchina urvilleana - Princess Flower.

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