Lighting: | Acacias love lots and lots of light. Move them outside when the weather permits. |
Watering: | Moderate to slightly dry; allow the soil to dry between waterings. Simon & Shuster's recommends daily misting. |
Feeding: | Every 15-20 days during the growth period. Use a standard bonsai fertilizer, or a low nitrogen fertilizer to encourage flowering. |
Repotting: | Every 2-4 years, depending on the age and vigor of the tree. Use a fast-draining soil mix, low in organic material. Reduce top growth in proportion to roots that have been pruned. Best to repot before acclimating the tree to warmer weather. |
Styling: | Wiring can be done from spring to autumn, every other year. Use caution when wiring, as the branches can be delicate. (and I would add, the tree can fight back! Watch out for those thorns!) In my experience, acacias can become leggy quickly, and tend towards top growth at the expense of lower branches, which sometimes die back. It's essential, therefore, to keep up with constant minor pruning. Acacias have compound leaves, so leaf pruning is futile. |
Propagation: | Seed or cuttings. Cuttings should be taken in summer and supplied with bottom warmth and rooting hormone. Frankly, I've never gotten any of mine to take. Propagation from seeds seems a better bet, as acacias germinate in high numbers. The seeds do need some special treatment, however, due to their hard shells. Nick the bottom ends of the seeds with a knife or pair of clippers, then place the seeds in a bath of hot (not boiling!) water. Allow them to soak for two days, then sow. |
Pests etc.: | Aphids, flies, thrips, mites etc., also hard shelled insects like scale and wooly aphids. |
Does anybody know of public domain pictures in .jpg or .gif format of the Umbrella tree version of the Acacia. Thanks. Grant Thomas
> I'll start the ball rolling, since I'm the proud grower >of an acacia. I don't know the specific species, unfortunately, >as it was labeled only "Acacia." I suspect, however, its >variety is something like "TWA." (Tree With Attitude.) If plants >had biker gangs, this tree would join. It's the toughest, >most ornery tree I've ever had the pleasure of raising. I >got off on the wrong foot with it by doing something very stupid >(isn't expereince a wonderful teacher?) -- leaving it in the car too >long on the cold winter's day that I bought it. I thought it >was a goner, for it dropped all its leaves, but it came back in >several weeks. This is typical of the vigor of the tree -- it's >an extremely strong and fast grower, but it tends to get leggy. >Constant pruning is a must because of this, and more importantly, >because it's a tree which seems to tend towards top growth, with >the lower limbs dying back if the top is left to its own devices. > > There is, however, one little problem with constant pruning -- >the tree has BIG nasty thorns. It also has a strong sense of >retribution, so when we prune it, it prunes us! I said that the >tree has an attitude! It once got into an argument with my cat, >and it won. (Actually, this may have taught the cat a valuable >lesson about messing with bonsai -- she hasn't done it since.) > >This particular tree doesn't seem fussy about the particulars of >soil, water or food. It's in basic soil mix, and I feed it >twice monthly with Pokon. (Yes, I know organics and timed >released fertilizers are more effective, but I just can't stand >ugly, smelly pellets on my trees, especially when they're >indoors!) It likes to be watered moderately, perhaps a bit on >the dry side, but is fairly forgiving in this regard. It loves >sunlight. I keep it in an eastern bay window where it gets lots >of light in the morning, and in the winter evenings, it does >well under a grow lamp. It doesn't like the cold, as I have >learned, and should be kept inside until the weather is warm. >In Buffalo, this is around August. (Well, I may be exaggerating >a little...) > >I transplanted it once, in spring, without any problems. I've >tried to get its cuttings to root with no success. I haven't >yet tried from seed although I do have some acacia seeds on >order, so I should know soon. > >It doesn't seem (knock on wood) prone to devestating problems >with insects and fungoidal infections. Every now and then, >little fly larvae like to make their home in the roots. I >lather the lower trunk with soap, then sit the tree in a sinkful >of water for a while. Bugs drown, problem gone. It's hard to >style, however, because of the legginess and dieback. It also >tends to "shed" -- losing a bunch of leaves several times a year, >but this is always followed by renewed vigor. For all that, I >think it's quite a worthy bonsai because it has lovely little >foliate leaves, and an impressive gnarly trunk. > >I'd be interested to know if other acacias are as macho as mine! > >Sabrina Caine >c/o rcaine@acsu.buffalo.edu ----------------------------------------------------------------- ----------------------------------------------------------------- Date: Sun, 17 Mar 1996 12:33:08 18000 Reply-To: Internet Bonsai ClubSender: Internet Bonsai Club From: James Lewis Subject: Re: Tree of the Week - ACACIA!!! In-Reply-To: <199603170527.AAA00027@freenet4.scri.fsu.edu>; from "Robert F Caine" at Mar 17, 96 1:22 am Let me add some Florida acacia to the list: A. choriophylla (Tamarindillo), small tree, NO SPINES. In U.S. found only in the Keys. Endangered, but may be available in S. Fla. nurseries) A. macracantha (long spine / steel acacia). Small spreading tree with PAIRED spines about 4 cm (2 inches) long. Very rare--restricted to one key in Fla. Doesn't sound suitable anyway. A. pinetorium (Pine Acacia) small, sprawling shrub/tree with 1 cm paired spines. Common in pinelands scrub, Lee County south. A. smallii (Small's acacia) Shrub to 5 meters armed with pairs of VERY SHARP spines. In Fla. in the extreme western panhandle (Near Pensacola) so may be in Alabama and Mississippi, Louisiana or Texas. A. tortuosa (Twisted acacia) shrub to small, spiny tree with zigzag branches. Uncommon on shell mounds and along roadsides, S. Fla. -- Jim Lewis - jkl2@freenet.scri.fsu.edu Cool the Earth . . . Plant a Tree! ========================================================================= Date: Mon, 18 Mar 1996 10:33:14 -0800 Reply-To: Internet Bonsai Club Sender: Internet Bonsai Club From: Bill Williams Subject: Tree of the Week: Acacia My only experience so far with an acacia is getting the seeds to sprout. I bought Acacia farnesiana seeds from Carter Seeds in California. I then scarified them, soaked them in hot water, and immediately planted them. 32 of the 50 I planted sprouted right up. And this was the first time I tried seeds of any type. If they are hardy as has been stated, I'm going to have a lot of Acacias to deal with. Bill Williams ========================================================================= Date: Mon, 18 Mar 1996 11:12:53 -0800 Reply-To: Internet Bonsai Club Sender: Internet Bonsai Club From: Hud Nordin Subject: Re: Tree of the Week: Acacia > If [Acacia farnesiana] are hardy as has been stated, I'm going to > have a lot of Acacias to deal with. If you are talking cold hardiness, their natural northern range ends around the Florida border, or not real far from Mexico. They like it pretty warm. Carter Seeds likely blessed you with several hundred seeds in its smallest 1-oz packet. They will germinate in high numbers. Yes, you will have a lot of Acacias to deal with. -- Hud ========================================================================= Date: Mon, 18 Mar 1996 16:12:18 -0800 Reply-To: Internet Bonsai Club Sender: Internet Bonsai Club From: Hud Nordin Subject: wtw5918, Who Complained of Being Unsubscribed I e-mailed you a message. It bounced. If the listserv has the same experience, that could be why you get unsubscribed. > From: MAILER-DAEMON@psdvser.ca.boeing.com (Mail Delivery Subsystem) > Subject: Returned mail: Insufficient permission --- The transcript of the session follows --- > bellmail: cannot create lock file /usr/spool/mail/wtw5918.lock: The > file access permissions do not allow the specified action. > 550 ... Insufficient permission ObBonsai: Regarding the Tree of the Week: Those who take up the habit of thorned Acacia species must either clean up most carefully after pruning sessions or give up altogether the idea of going barefoot in the area. I looked at some of my Acacia spines under a low-power microscope, once. Amazing things! They looked to be about ten times sharper than the steel needle I compared them to. They enter the skin effortlessly, even painlessly -- AT FIRST! ========================================================================= Date: Mon, 18 Mar 1996 16:42:33 -0800 Reply-To: Internet Bonsai Club Sender: Internet Bonsai Club From: Hud Nordin Subject: Re: wtw5918, Who Complained of Being Unsubscribed I got a bunch of different species from Carter Seeds, in the FAQ. I like legumes. Unfortunately they come in smallest packets of 1 ounce, and sometimes that is thousands, at least hundreds of seeds; it seems so wasteful. (Too late... I split my extras amongst net folks last time.) Avoid species that have phyllodes instead of leaves. These are usually the Australian species. I'll be writing about Acacia seedlings I have known and loved for the Tree of the Week. They are warm-weather species. I know some people who grow some species indoors. ========================================================================= Date: Mon, 18 Mar 1996 21:02:00 -0500 Reply-To: Internet Bonsai Club Sender: Internet Bonsai Club From: RickBonsai@AOL.COM Subject: Re: Tree of the Week - ACACIA!!! Some Texas Acacia: Acacia smallii (Texas Huisache)- I haven't done a lot with the one I have but even with severe pruning it has been reluctant to branch. This tree has spines at the base of the leaves and blooms from December-March with bright golden blossoms. In the wild they tend to be multi-trunk and about 15-20' tall. Acacia wrightii (Wright's Acacia, Wright's Catclaw, Uno de Gato)- So far, this tree is amazing. I bought mine last year in a 1 gallon nursery pot. Knowing the nursery where I bought it, I believe the tree to be only about 2-3 years old and it has a base of about 5/8". When I got the tree, which was about 2' tall with few branches, home I cut it back to about 6" to see if it would stimulate branching. Boy, did it. Seemingly overnight there were buds popping out from all over the trunk. I just repotted it a few weeks ago and, after some leaf drop, it is responding tremendously. Like Sabrina's, I suspect this tree will need a lot of pruning attention but since it buds back so well, I have high hopes for it. The compound leaflets are smaller than the huisache and fold up at night (or during the day if it needs water). As you might guess, the tree gets the catclaw name for its recurved spines. Rick S-most, Tx ========================================================================= From: "DLNorton@3RD|\\/|iL" Subject: Re: Tree of the Week - ACACIA!!! Message-ID: Date: Wed, 27 Mar 1996 14:27:14 -0800 References: <4ifpgk$hom@azure.acsu.buffalo.edu> In-Reply-To: <4ifpgk$hom@azure.acsu.buffalo.edu> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Lines: 19 Ahh..!! Mimosas!! What a fun and pain in the butt tree to grow...!! I live here in sunny and hot Southern California. I remember about 20 years ago my folks bought a house with two big mimosas in the front yard. My dad didn't like them and eventually cut them out. For about ten years hence, some of the seeds that made it to the ground would start to sprout. I tried saving them, but they died from the torrid heat we have out here. Since then I've moved away, got married, and started up bonsai garden. I've been meaning to get a mimosa like the one my folks used to have, but haven't found one that grabbed my fancy. And quite recently, my dad told me that he's now kicking himself for taking out those mimosas because they made great shade trees. He's now trying to grow a jacaranda on the same spot of one of the trees. My dad's a fruit tree specialist now, but back then, he didn't have the knowledge...now he's learned his lesson. -D.L.Norton ================================================================= From: havener@netten.net (havener) Newsgroups: rec.arts.bonsai Subject: Re: Tree of the Week - Acacia - at last! Date: 4 Apr 1996 16:20:43 GMT Organization: T-Net from Memphis! Lines: 27 Sender: havener@cedar.netten.net Message-ID: <4k0sss$qk@pine.netten.net> References: <4jupnt$ita@azure.acsu.buffalo.edu> NNTP-Posting-Host: d8.netten.net X-Posted-From: InterNews 1.1@d8.netten.net X-Authenticated: havener on POP host cedar.netten.net In article <4jupnt$ita@azure.acsu.buffalo.edu> rcaine@acsu.buffalo.edu (Robert F Caine) writes: > Acacias are warm weather trees with compound leaves, and, usually, > with nasty thorns. They must be wintered indoors, although they > generally like it somewhat cool -- under 64 degrees. I just sent Hud a bunch of legumes which include endemic Hawaiian Acacia koa and will also send him a more recently introduced exotic (within the last 100 years) Acacia which we can't quite figureout exactly what they are. You see, in Hawaii, what tropical/sub tropical may grow only 10 feet tall in their indigenous enviroment will often grow 200-1000+ percent taller in Hawaii. I'm sure Nina would have a field day trying to classify some of the exotics in Hawaii by sight without the benefit of DNA analysis. Hawaii adapted material like the Acacia koa grow best in a humid, 75-85 degree F range, rather than the cooler temp Acacia. Hud tried to "harden" a previous batch of Acacia koa to the cooler California enviroment, and they did not like it one bit! Hawaii plants, like the local Hawaii people, find temps lower than 75 degrees F, FREEZING! You frequently find the local Hawaiians in jackets when the temps are in the lower 70's F range. I currently have my dixie cup Koa sprouts in plastic baggy jactkets. Acacia koa also has a rich native cultural history as the warrior wood. Geoline, Looking foward to setting-up the foundation to The Memphis Musubi Hard Rock Bonsai Cafe with homegrown Koa =================================================================
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