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Jacaranda mimosifolia, commonly called jacaranda, is native to Argentina and Bolivia. It is a deciduous tree that grows 25-50’ tall in its native habitat.
- Naturalised Distribution
- Introduced, Naturalised Or Invasive in East Africa
- Economic and Other Uses
- Environmental and Other Impacts
Locations within which Jacaranda mimosifolia is naturalisedinclude the warmer parts of eastern Australia, southern Africa, Hawaii, south-eastern USA and outside its native range in southern South America.
Jacaranda mimosifolia is naturalisedin parts of Kenya and Uganda (A.B.R. Witt pers. obs.) and Tanzania (Henderson 2002).
Jacaranda mimosifolia can grow in bushland, grassland, wooded ravines and riverbanks. The spreading growth habitand the dense foliage shade out native plants and prevent their regeneration.
Deciduous or evergreen tree, 5-15 m tall. Its main distinguishing feature is its spectacular lavender blue blooms which has led to its popularity as an ornamental tree. Jacaranda mimosifoliais fast growing and resprouts easily if damaged. Its bark is thin and grey-brown in colour, smooth when the treeis young though it eventually becomes finely scaly. The twigs are slender and slightly zigzag; they are a light reddish-brown in colour. Twice-pinnately compound leaves, up to 45 cm long. Its flowers are beautiful, lavender blue, tubular, 2.5 cm long, appear in dense 15 - 25 cm terminal clusters with often the entire tree in flower and later the ground turning blue as the flowers fall off. Round, flat, reddish brown, woody capsule, 4 - 5 cm in diameter containing numerous small winged seeds.
Its main value is as an ornamental treewidely grown in urban areas worldwide. It also has medicinal properties. However, these uses cannot compensate for this plant's overall negative impacts.
Jacaranda mimosifolia is regarded as an invasive species in parts of South Africa and Queensland, Australia, where it can out-compete native species. It can form thickets of seedlings beneath planted trees from which the speciesmay expand and exclude other vegetation. J. mimosifoliahas been listed as a Category 3 invader in South Africa (no further planting is allowed - except with special permission - nor is trade in propagative material. Existing plants must be prevented from spreading).
The precise management measures adopted for any plant invasion will depend upon factors such as the terrain, the cost and availability of labour, the severity of the infestation and the presence of other invasive species. Some components of an integrated management approach are introduced below. The best form of invasive species management is prevention. If prevention is no longer possible, it is best to treat the weed infestations when they are small to prevent them from establishing (early detection and rapid response). Controlling the weedbefore it seeds will reduce future problems. Control is generally best applied to the least infested areas before dense infestations are tackled. Consistent follow-up work is required for sustainable management. Jacaranda mimosifolia is very difficult to control once established. Large treesmust be ring-barked or cut down below ground level and any regrowth treated with herbicide. . When using any herbicide always read the label first and follow...
Henderson, L. (2001). Alienweeds and invasive plants. A complete guide to declared weeds and invaders in South Africa. Plant Protection Research Institute Handbook No. 12, 300pp. PPR, ARC South Africa. Henderson, L. (2002). Problem plants in Ngorongoro Conservation Area. Final Report to the NCAA. Pacific Island Ecosystems at Risk (PIER). Jacaranda mimosifolia D.Don, Bignonaceae: plant threats to Pacific ecosystems. www.hear.org/Pier/species/jacaranda_mimosifolia.htm. Institute of Pacific Islands Forestry, Hawaii, USA. Accessed March 2011. Wikipedia contributors. "Jacaranda mimosifolia." Wikipedia, The Free Encyclopedia. Accessed March 2011.
Agnes Lusweti, National Museums of Kenya; Emily Wabuyele, National Museums of Kenya, Paul Ssegawa, Makerere University; John Mauremootoo, BioNET-INTERNATIONAL Secretariat - UK.
This fact sheet is adapted from The Environmental Weeds of Australia by Sheldon Navie and Steve Adkins, Centre for Biological Information Technology, University of Queensland. We recognise the support from the National Museums of Kenya, Tropical Pesticides Research Institute (TPRI) - Tanzania and Makerere University, Uganda. This activity was undertaken as part of the BioNET-EAFRINET UVIMA Project (Taxonomyfor Development in East Africa).
Family Bignoniaceae. Botanical Name Jacaranda mimosifolia. Common Name Jacaranda. Origin South America. Habit Upright, Spreading, Rounded. Landscape Footslopes, Hills, Plains. Soil Texture Clay, Loam, Sand. pH Acidic, Alkaline, Neutral. Tolerates Drought, Lime, Moderate frost.
The jacaranda tree is a tropical beauty with its clusters of fragrant, purple, trumpet-shaped blooms. In the right climate, it makes an excellent shade or street tree.
The foliage of jacaranda are fern-like, bipinnate compound leaves up to 20\\" long. The tree can be either semi-evergreen or deciduous, depending on the climate. Most of the blooming is in late spring/summer, but in warmer areas, the tree can flower at any time. Only mature trees have flowers; small or young trees and those grown indoors typically do not flower.
In general, jacarandas are a good choice for large outdoor areas in warm climates. They are tolerant to occasional cold down to 20 F but do not thrive in climates with frequent freezing temperatures. They like a lot of sun but are vulnerable to trunkscald in areas with high temperatures.
Jacarandas can be grown indoors but, again, they probably will not flower, and they must be planted outdoor eventually, so they are not good for long-term container planting.
Young jacaranda trees should be pruned to form one central leader (main trunk) for strength and stability. Otherwise, try to avoid pruning your jacaranda because it tends to promote vertical suckers that can distort the tree's shape. Try to remove only broken or diseased branches. Jacaranda leaves, and particularly the flowers, can create a lot of litter when they drop. This makes the tree a poor choice near pools or large water features. It's also not ideal near driveways, patios or outdoor recreation areas due to the cleanup maintenance. If the debris isn't swept up quickly, it can rot and result in a slimy mess.
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- Jacaranda mimosifoila
Common name: Jakaranda Other common names: Blue haze tree Names in non-English languages: Spanish Jacaranda × Portuguese Caroba guassu, Jacaranda caroba, Jacaranda mimoso ×