Tibouchina urvilleana - multiply and overwinter


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Tibouchina

In order for the exotic Tibouchina urvilleana to develop a bushy silhouette and abundant flower abundance, it requires repeated pruning. Plenty of plant material accumulates for uncomplicated propagation. Anyone who loves the challenge as a hobby gardener, will also like to try on a offspring by sowing. Both methods can be read here. In order to ensure that the young plants used by hand come through the cold season in the first and all the following years, this guide also explains all the important aspects for successful wintering.
Stecklingsvermehrung
Since a Tibouchina urvilleana branches only very hesitantly of its own accord, a three-time pruning a year is one of the fundamental care measures. After each cut, you also hold a wealth of premium material for propagation in your hands. This is especially true after the first cut in March. Follow these steps:
  • The perfect cutting is 10-15 cm long and healthy
  • The cut was just below a bud
  • In the lower half, each offshoot is defoliated
  • Small seed pots fill with peat sand or lean substrate
  • Insert one clip at a time so deep that at least 1 pair of leaves protrudes
  • Sprinkle with lime-free water at room temperature
So that the cuttings quickly develop their own root system, a constant heat of 22-25 degrees Celsius is required. This ensures a heated indoor greenhouse in the spring. Alternatively, put on each seed pot a plastic bag that is supported with matches in such a way that it does not touch the herbaceous parts of the plant. Placed on the warm, partially shaded windowsill, the rooting progresses within the next 4-8 weeks. During this time, keep the substrate constantly moist and ventilate the cover every 1-2 days so that no mold forms. If a spin-off reboots, the plastic bag has fulfilled its task and will be removed.
Tip: If cuttings of a violet tree are poured from below, this method reduces the risk of rot and mold. For this purpose, the pots for a few minutes in a bowl with a 5-10 cm high water level. If the surface of the substrate feels damp, the branches change back to their original place.
Repot cuttings

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At the latest when the tender roots grow out of the bottom opening of the culture container, it is time to move to a larger pot. The substrate is now a high-quality potted soil, which uses expanded clay, lava or styrofoam pellets and a little sand to provide more permeability. So you pot the young plants with expertise:
  • The new pot is no larger than 5 centimeters in diameter
  • Above the bottom opening, a potsherd prevents harmful waterlogging
  • Half fill the vessel with substrate and press in a well
  • Pop the former cuttings and plant them in the middle
  • The fresh soil reaches almost to the bottom pair of leaves
Press the tray with a spoon or a spatula to create a small pouring margin. Ideally, however, you will continue to pour from the bottom in the first time. Since the potting soil is pre-fertilized, the young plant receives its first portion of diluted liquid fertilizer at the earliest after 4-6 weeks.
Tip: They promote a lush branching when the shoots of a young princess flower are regularly rejuvenated.
sowing
If the Tibouchina urvilleana spent the summer on the balcony or terrace, pollination by bees or bumblebees took place, resulting in the growth of capsule fruits. These can be harvested for the production of seeds for propagation by means of sowing. From a pure-bred offspring is not to go out with this method. Just let yourself be surprised what attributes of parent and grandparent plants prevail. Alternatively, the specialized trade holds certified seed. Although the seed can be sown all year round, the ideal spring is the end of February / beginning of March. The lighting conditions are bright enough from this point on, so that the young shoots do not hurry. So the offspring succeeds by seeds:
  • Fill a heatable seedbed with seed soils such as peat sand or coconut
  • Spray the substrate with room-warm, lime-free water
  • Then sow the light germs and just press on
  • Cover a plastic wrap or spend in the indoor greenhouse
At an ideal germination temperature of 22-25 degrees Celsius, the cotyledons break through the seed coat within 3-6 weeks. Keep the substrate constantly moist during this time. Any cover can be omitted after germination. An extra gentle casting method does not administer the water from above but from below. To do this, fill a bowl approx.5 centimeters high with water and put in the pots. The capillary force then causes the moisture to rise into the substrate. After a few minutes, check the surface of the earth with your thumb. If it feels damp, remove the seed tube from the water.
Pick seedlings

Violet tree

If the first true pairs of leaves flourish above the kedge leaves, the seedling shell is in a tight spot. High time for the isolation, because leaves constantly touching leaves cause rot formation. How to skillfully stroke the young plants:
  • Half fill small pots with Pikiererde
  • Throw a small trough into it with the Pikierstab
  • Use a spoon to lift out the seedling, including most of the earth
  • Place in the trough and fill with substrate up to the cotyledons
  • Press the Pikiererde with the rod and pour
Too long root strands are clicked off with the fingers up to 2 centimeters, because otherwise they bend and die in the substrate. In the further course you place the young plants in a bright window seat at temperatures of around 20 degrees Celsius. A regular supply of lime-free water is still required. Your pupils will not be fertilized at first. Only after repotting in the final bucket with substrate for adult plants, the regular nutrient supply begins.
Hibernate at the right location
When the outside temperature falls below 10 degrees Celsius, it is too cold for the exotic Tibouchina urvilleana in the open air. Now she changes to a wintering place, which is like this:
  • Bright and not too warm, with temperatures around 15 degrees Celsius
  • A place at the south window or in the light-flooded, heated conservatory is ideal
  • There is no active radiator in the immediate vicinity of the location
A short-term temperature minimum of 0 degrees does not kill the plant, but is answered in the worst case with the dropping of flowers and leaves. The same applies to a too dark space in the room. If a window seat for the princess flower is out of the question due to its stature height, it should be positioned under a special plant lamp.
Care in winter

Tibouchina ill

The water and nutrient supply is adjusted during the cold season on the reduced metabolism. Therefore, do not water the princess flower until the substrate surface has dried. To do this, press your thumb into the ground. If the upper 4-5 cm feels dry, it is cast. The administration of fertilizer is waived from December to March.
Since the dry heating air offers the spider mites ideal living conditions, the violet tree is repeatedly sprayed with lime-free water. In this direction also aims to fill the coaster with water and pebbles. The evaporating water permanently spreads the plant, so that moving spider mites do not even settle. Commercial humidifiers, bowls filled with water and an indoor fountain also contribute to increased humidity, which also benefits human health.
Conclusion
If the cultivation of a Tibouchina urvilleana is successful, the desire for further specimens grows. For the ambitious hobby gardener, the self-propagation of this tropical flowering plant is a matter of honor. Good to know that both offspring by cuttings as well as by sowing is to be mastered. It is important to note some fundamental requirements, such as a sufficiently warm temperature of 22-25 degrees both for rooting of cuttings and germination of seeds. In order for you to enjoy the princess flowers over many years, the requirements for hibernation must not be underestimated. The winter quarters should be bright and not too warm, with a reduced supply of water and a renunciation of the gift of fertilizer. Keep cunning spider mites at a distance by periodically spraying with lime-free water to get the violet tree through the cold season.

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