This tall, semi-evergreen, native shrub or small tree has feathery, finely divided leaflets of a tender, medium inexperienced coloration. The marginally tough stems are a wealthy chocolate brown or gray, possessing lengthy, sharp, a number of thorns. The small, yellow, puff-like flowers are very aromatic and seem in clusters in late winter then sporadically after every new flush of development, offering practically year-round bloom. The persistent fruits have a shiny coat and comprise seeds that are cherished by birds and different wildlife.
Acacias are generally known as wattles or golden mimosa. Lesniewicz says that the time period mimosa utilized to acacia is mistaken; Ainsworth labels his acacia a mimosa. Most acacias will bear golden flowers adopted by legume pods, however getting acacia to flower in bonsai tradition is apparently tough. They’ve compound leaves, are well-branched, and have nasty thorns.
Acacias favor full solar.
Acacias are heat climate bushes. They should be wintered indoors, though they often prefer it considerably cool — underneath 64 levels Fahrenheit.
Acacia favor reasonable to barely dry situations; permit the soil to dry between waterings. Nevertheless, the leaves will drop if the soil is allowed to get too dry. Simon and Shuster’s recommends each day misting.
Each 15-20 days throughout the development interval. Use a normal bonsai fertilizer, or a low nitrogen fertilizer to encourage flowering.
Pruning and wiring:
Wiring could be completed from spring to autumn, each different 12 months. Use warning when wiring, because the branches could be delicate. Acacias can change into leggy shortly, and have a tendency in direction of high development on the expense of decrease branches, which generally die again. It’s important, due to this fact, to maintain up with fixed minor pruning. Acacias have compound leaves, so leaf pruning is futile.
Seed or cuttings. Cuttings needs to be taken in summer time and equipped with backside heat and rooting hormone. Propagation from seeds appears a greater guess, as acacias germinate in excessive numbers. The seeds do want some particular therapy, nonetheless, because of their onerous shells. Nick the underside ends of the seeds with a knife or pair of clippers, then place the seeds in a shower of scorching (not boiling) water. Permit them to soak for 2 days, then sow.
Each 2-Four years, relying on the age and vigour of the tree. Use a fast-draining soil combine, low in natural materials. Scale back high development in proportion to roots which have been pruned. Finest to repot earlier than acclimating the tree to hotter climate. They’re simple to develop in any acid or alkaline soil.
Pests and ailments:
Aphids, flies, thrips, mites and so on., additionally onerous shelled bugs like scale and woolly aphids. Sometimes anthracnose can infect leaves.
The next acacias are really useful for bonsai:
Acacia baileyana: Cootamundra wattle, golden mimosa very nicely suited to bonsai due to its small measurement: Gustafson recommends this acacia particularly for miniature bonsai. Likes cooler temperatures throughout the winter: 46 to 53 levels Fahrenheit.
Acacia choriophylla: tamarindillo, small tree, no spines In U.S. discovered solely within the [Florida] Keys. Endangered, however could also be accessible in S. Florida nurseries.
Acacia dealbata: silver wattle, mimosa, native to Tasmania and Australia, zones 8-10. It has silvery-grey foliage and might develop as much as 60 ft within the wild. A preferred florist’s store providing.
Acacia farnesiana: golden mimosa, popinac, candy acacia, fragrance acacia, apparently, a really beautiful smelling tree, used within the manufacture of fragrance. Additionally fairly small, it’s going to gr ow to solely 10 ft within the wild, with leaflets only one/Eight inch lengthy. Higher tailored to heat temperatures throughout the winter than A. baileyana, it’s native to heat areas of America, zones 8-10.
Acacia pinetorium: pine acacia, small, sprawling shrub/tree with 1 cm paired spines. Frequent in pinelands scrub, Lee County south, in Florida.
Acacia smallii: Small’s acacia, Texas huisache, Shrub to five meters armed with pairs of VERY SHARP spines on the base of the leaves. It blooms from December-March with vivid golden blossoms. Within the wild they are usually multi-trunk and about 15-20’ tall. It’s present in Florida within the excessive western panhandle (Close to Pensacola) and in Texas, so it might be in Alabama, Mississippi and Louisiana.
Acacia tortuosa: Twisted acacia, shrub to small, spiny tree with zigzag branches. Frequent on shell mounds and alongside roadsides, S. Florida.
Acacia wrightii: Wright’s acacia, Wright’s catclaw, uno de gato. The compound leaflets are smaller than the huisache and fold up at night time (or throughout the day if it wants water) . As you may guess, the tree will get the catclaw title for its recurved spines. Discovered native in Texas, this acacia is reputed to be very vigorous, with loads of back-budding.
Simon and Schuster Information to Bonsai
Bonsai in Your Dwelling by Lesniewicz
Miniature Bonsai by Gustafson
The Artwork of Indoor Bonsai by Ainsworth
USDA Reality Sheet ST-5
Compiled by Sabrina Caine
Edited by Michael Johnson and Thomas L. Zane