Herbs

Maintaining a rosewood tree - all tips at a glance

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The rosewood tree is an exotic that needs your attention if you want to enjoy the magnificent blue or violet flowers.

© Byron Ortiz - Fotolia.com

The rosewood tree (jacaranda) catches the eye. The trumpet tree plants adorn the roadsides in their native South America and are a very special eye-catcher with their blue to purple panicle flowers. So that our living rooms and winter gardens also become a welcome home for the bizarre exotic, some care instructions must be observed, which can be read below.

The rosewood tree as a houseplant

As an ornamental plant, the jacaranda tree quickly made a career. The crop can be found in almost all frost-free zones today. Hobby gardeners in Germany unfortunately have to limit themselves to keeping pots and cultivating the rosewood tree in the room. In summer, the plants on the balcony or terrace can provide exotic charm. The frost-sensitive plants always spend the winter indoors.

Why doesn't my rosewood tree bloom?

Anyone who has seen photos or was able to convince themselves of the impressive blossoming of the trees during their vacation in the south will now wait with excitement and not infrequently ask the question whether there is a maintenance error behind the flowering laziness of the ornamental plants.

Unfortunately, gardeners in Germany are mostly disappointed. Jacaranda trees only rarely bloom when they are small. The chances of a blue-violet sea of ​​flowers only increase from a height of two meters. Offer your plant enough space and have a spacious conservatory or high ceilings, then you can continue to hope for the attractive bloom. Otherwise, do not be disappointed and enjoy the filigree pinnate leaves.

Water the rosewood tree properly

When watering, the rosewood tree is quite demanding. Casting is only necessary if the surface of the substrate feels dry. The thumb test is helpful here. It is poured abundantly and at larger intervals. This is more digestible for the crop than giving just one splash of water every day.

Attention: Never water the rosewood tree with fresh and cold tap water.

The plant is preferably watered with rainwater that has been brought to room temperature. If there is no rainwater available, you can use stale and softened tap water.

Tip: A small bag made of linen filled with peat ensures that the water is softened overnight.

If the rosewood tree is too dry, it acknowledges this with falling leaves. Air dryness can also damage the exotic crop. Do not forget to spray the plant regularly with soft rain water. Particularly dry heating air damages the plant. In summer, the air humidity in the room can also be increased by frequent ventilation. It is also an advantage to install humidifiers in the room.

Properly fertilize the rosewood tree

The plant has a very high nutrient requirement. Fertilization should be carried out regularly, especially during the growing season, between April and August. Add liquid fertilizer to the irrigation water every 14 days. Hibernates the crop in the heated winter garden, is fertilized monthly and in a heavily diluted concentration during the winter half-year.

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If possible, use a low-lime fertilizer. A commercially available rhododendron fertilizer is very suitable. More and more hobby gardeners are using organic fertilizers. This not only protects the wallet, but also the environment. Compost can already be mixed in during planting.

Tip: It should be fully matured compost, otherwise the roots could be damaged by rotting processes that have not yet been completed.

Horn chips, bone meal or primary rock meal also offer a full substitute for commercially available industrial products.

Care tips at a glance - water and fertilize the rosewood tree

care measureexplanation
Find locationA little tact is required when watering.
As soon as the top layer of the substrate has dried, watering is abundant.
Warm rainwater is preferred.
Calcareous water directly from the pipe is not tolerated.
Tap water should be softened before use.
As an exotic plant, the rosewood tree prefers high humidity.
Therefore, the plant should be sprayed regularly.
FertilizeDuring the growth phase between spring and late summer, fertilization takes place every 14 days.
Low-lime liquid fertilizers from the trade are used, preferably rhododendron fertilizers.
Organic fertilizer is equivalent.
In addition to compost, horn meal or bone meal are also suitable.

What types of rosewood trees are there?

The rosewood tree belongs to the trumpet tree family. Around 50 species are described in this genus. All types of Jacarandas grow in South America. Only Jacaranda mimosifolia is important for the culture in the bucket or as a houseplant. Occasionally, Jacaranda ovalifolia is a species that is characterized by oval leaves.

Some species of rosewood and their distribution area

Palisanderbaum Type circulation area
Jacaranda cuspidifoliaBrazil
Bolivia
Paraguay
Jacaranda savingsecuador
Peru
Jacaranda caucanaColombia
Costa Rica
Venezuela
Jacaranda glabraecuador
Peru
Bolivia
Jacaranda carobaBrazil

Detect diseases and pests on the rosewood tree

The greatest danger to the plant is the maintenance mistakes made by its owners. Otherwise, the exotic species are extremely robust against diseases and pests. Only spider mites or whiteflies occasionally occur.

Attention: Pest infestation is favored by a too low air humidity.

If a spider mite infestation occurs, the edges of the leaves and the leaf axils appear to be covered with fine cobwebs. The pests can be identified particularly clearly if the plant is sprayed vigorously.

If the leaves lose their shape and color, whiteflies can be the cause. The larvae and fully developed insects feed on the leaf juice. The whitefly is often on the undersides of the leaves.

If the insect infestation is noticed in good time, showering with a hard water jet is quite effective. Affected plants can also be treated effectively with nettle solution or horsetail.

However, if you have failed to regularly check your plant, you will probably have to use chemical means to destroy the pests and ultimately save the crop.

Eliminate diseases through nursing mistakes

If the rosewood tree was not treated with the necessary sensitivity when watering, or if the choice of location was rather unsuccessful, the plant will soon become bald from below. If you notice this, act immediately and remove all the tips. The rosewood tree will then again form new shoots below.

If the stand is too dark or the irrigation is too extensive, leaves can fall. Even low humidity leads to the leaves drying out and falling off.

Proper care for healthy plants - how it works

Location

Choose a bright but not full sun location. Protect the plants from the blazing midday sun. The rosewood trees are sensitive to frost and must in any case spend the winter indoors.

Planter

The planter should be of sufficient size and depth so that the jacaranda tree can root well. Terracotta planters ensure stability on windy days outdoors. There must be enough drainage holes in the plant pot for the irrigation water to prevent waterlogging.

Substratum

The substrate should be as loose and permeable as possible. The irrigation water must not accumulate in the container. A good choice is rhododendron earth. Compost or horn shavings enhance the substrate. Calcareous soil is not tolerated.

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