Albizia Trees


While Albizia trees are very beautiful, they are an extremely dangerous invasive species. They have taken over the mountain behind our home here in Maui. They are short lived, grow to enormous height and width, have shallow roots, fall over easily, drop limbs the size of cars, killing other trees and vegetation. They fall on powerlines, homes, people, plants, animals and cost millions of dollars every year to remove. And they just grow back as they shoot seeds out in the millions, showering down on everything like rain.

Do your part and get them out while they are small. In five short years they grow so big it can cost thousands to remove them before they fall over and hurt something or someone.

Below is a collection of videos, images, and articles. If you have more information to contribute, please email




Dr. James Leary, CTAHR Invasive Weed Specialist, conducts field trials at Maunawili Experiment Station, Oahu, targeting the invasive tree Albizia (Falcataria moluccana; syn. Albizia moluccana, Albizia falcata, Albizia falcataria, Adenanthera falcataria, Paraserianthes falcataria). Using Milestone® VM (active ingredient: aminopyralid), he researches two application methods: drill application vs. frill cut. A second trial compares the effects of three different herbicides on albizia: 2,4-D® (active ingredient: 2,4-Dichlorophenol), Garlon®4 Plus (active ingredient: triclopyr), and Milestone® VM (active ingredient: aminopyralid). Preliminary results are shown after 1 week, 2 weeks, and 5 weeks. Partial funding provided by the USDA via the RREA and TSTAR programs.


0:08so I’m here today July 25th 2009 and I’m

0:12at the maunawili Experiment Station on

0:14the windward side of Oahu and today

0:16we’re going to start an experiment to

0:18look at how we can manage large class

0:21albezia that’s infesting this area using

0:24basal incision techniques some of you

0:27guys are more familiar with the frill

0:29cut or the hack and squirt we’re also

0:31going to try with the drill and we’re

0:34using a JK injection system that is

0:37self-contained so I’ll be using a

0:39quarter inch drill bit and going in

0:42flush at about 6 centimeters deep we’re

0:51comparing this to the standard frill cut

0:54application using a cane knife so the

0:59treatment formulation we’ll be using

1:00today is milestone which is the active

1:03ingredient amino Pyrrha lid and each

1:05incision will receive a 1 mil

1:07application with this self-contained


1:19for today’s experiment we’re going to

1:22look at a single chemical formulation

Albizia is beautiful but menacing and invasive. It destroys everything around it as it grows to monstrous size and is weak, its limbs fall and they are the size of a bus, crushing and killing. Grown trees fall over as their roots are shallow and cannot support their own weight, especially in high winds and hurricanes.

1:24milestone with the active ingredient

1:26amino Pyrrha lid and determine its

1:28efficacy on this invasive species

1:30Albizia and the treatment design we have

1:33setup is the two different types of

1:35incisions the cut versus the drill and

1:37the number of incisions per specimen

1:40eight incisions versus four incisions

1:43now each incision will receive one ml of

1:46full concentrate mile stone and so an

1:49eight incision treatment will receive

1:51twice the amount of chemical as the four

1:53incision treatment the albezia selected

1:56for this experiment are what I would

1:58consider a larger class mature stand

2:00that with an average diameter at breast

2:03height of about 30 centimeters you can

2:05see the canopy height is approximately

2:0720 to 30 meters and with a canopy

2:10diameter of 7 to 8 meters so we’re back

2:14at maunawili that site where we

2:16administered milestone 2 albezia and one

2:19week later what we’re already seeing for

2:21all treatments is massive defoliation

2:25you can see the pennant leaves of the

2:27albezia covering the soil surface

2:30underneath the canopy where the trees

2:32were treated we also notice increased

2:35light levels created by the exposed

2:37canopy of the treated albezia there’s no

2:41appreciable difference so far between

2:43the frill cut and drill application but

2:46what I’m noticing for both techniques is

2:49that there’s not a lot of SAP flow and

2:51so that suggests that there was an

2:53excellent uptake of the herbicide by

2:55this species so we’re back at the

2:58maunawili Experiment Station it’s August

3:007 2009 I’m here to administer another

3:03herbicide trial on Elba Jie the large

3:07mature class and we’re going to use a

3:09slash and injection technique similar to

3:12our first trial and in this trial today

3:15we’re going to look at three different

3:16chemistry’s two for D and garland for

3:20which is trike Lapeer and also our

3:22milestone formulation and based on our

3:25previous experiment we found that four

3:28incisions within

3:30around the base of the plant was

3:31adequate for administering a strong dose

3:34to the tree so we’ll be administering

3:36the same dose rate of four incisions

3:39with a total of four milliliters of

3:42concentrate for our treatment design and

3:45this experiment will be replicated four

3:47times these trees appear to be about 30

Albizias have shallow root systems and easily fall over during storms.

3:51meters tall with an average DBH of 25 to

3:5530 centimeters welcome to another

3:58episode of extreme weed control here

4:01behind me we have a albezia specimen

4:04with a DBH of 150 centimeters now

4:07albezia didn’t become invasive until it

4:10lost its natural predators the dinosaur

4:12and so today we think we have a new

4:15formulation in a milestone that will

4:17assist in controlling albezia in these

4:20environments and so today we’re going to

Giant Albizia in Winter

4:22use an incision injection method with a

4:24simple cane knife and concentrate

4:28applications now I’m going to make my

4:30incisions around these buttress roots of

4:32this large tree and we counted the

4:35number of buttresses and there’s about

4:37seven of them so we’ll make a

4:39concentrated application of a total of

4:42seven milliliters just some real simple

4:46cuts we don’t have to get too crazy with



5:12as you can see how much this specimen

5:14dominates the canopy above now we’re at

5:23the original site where two weeks ago we

5:25applied milestone with eight and four

5:27cut incisions and for all of the

5:30treatment plants two weeks later we have

5:33one hundred percent canopy defoliation

5:35and you’ll see the light levels that

Albizia trees send off thousands of air-borne seed pods and quickly take over and destroy the other native trees and vegetation.

5:37have changed substantially within this

5:38test area this area hasn’t seen that

5:41kind of light in a long time so we’ll

5:43continue to play this out we’re really

5:45early but I suspect we’re still going in

5:47the right direction so I’m back at the

5:50maunawili site where we administered a

This tree is a Monkeypod tree, not an Albizia. They look similar but are very different.

5:52herbicide injection trial on Albizia and

5:56we are now five weeks after the trial

5:59and we looked at three different

6:00formulations two for D in the ester

6:04formulation the trike Lapeer in the form

6:07of Garlin for ultra and then finally

6:09also the milestone vm which is the

6:12active ingredient amino Pyrrha lid all

6:14these applications were made with

6:16concentrated formulations of the active

6:19ingredients and a total of four MLS was

6:22applied to each of the trees at four

6:24incision points and so far at five weeks

Millions are spent every year fighting Albizia trees. They are fragile, weak, dangerous, and can fall on people, property, animals, and other valuable plants and trees. They are invasive and harmful, and while they look pretty, they should be removed when young, as they grow into giant trees in just a few years.

6:27after we’re seeing a dramatic difference

6:30among the different treatments where our

6:32our best formulation so far has been the

6:34milestone where we have complete canopy

6:38defoliation our second best is Garland

6:41where two out of the four trees that

6:43were administered this treatment showed

6:45really good results in D foliate in the

6:47canopy but the other two were not

6:51showing the same kind of results so

6:53there’s an inconsistency with the

6:55garland for this particular experiment

6:57versus milestone across the board

6:59showing complete defoliation and of

7:02course two for D showing no canopy

These beautiful but deadly seed pods take over and eliminate other plants. They are fast-growing, short-lived and leave a massive path of ecological and physical destruction.

7:05defoliation whatsoever showing that 240

7:07is not an act or an effective

7:09application in albezia control so here

7:13you can see the differences among the

7:15treatments with milestone at the top of

7:17the frame showing complete canopy

7:19defoliation at five weeks after

7:21application while on the bottom of the

7:23we show a to 4d application showing no

7:26level of activity or loss of foliar

7:28canape as a conditional response to the

7:32herbicide we’re also noticing secondary

7:35infection which suggests that these

7:37trees are going to have a difficult time

Albizias Take over.

7:38recovering here we’re looking at the

7:41bark surface of an untreated specimen

7:43where we have some insect activity but

7:46not at the same level as what we’re

7:47observing on the herbicide treated

7:49specimens nor do we see the prevalence

7:51of infection points that are common on

7:53the treated specimens as well on this

7:56larger specimen where we treated with

7:58mile stone we see that in one segment of

8:01the canopy we have pretty good

8:02defoliation but if we look at another

8:05Zone in the canopy the foliage is still


8:08suggesting that the herbicide was

8:10shuttled away from this zone now if the

8:12herbicide is still active in circulating

8:15within the vasculature there’s still a

8:17chance for this to take effect now we’re

8:21back at the original site where we

8:23administered milestone 2 albezia in 8

8:26mil and for maltreatment applications of

8:28concentrate and at 50 days after

8:31treatment we’re still seeing complete

8:32canopy defoliation and no signs of

8:35recovery so what this tells me is even

8:37though we’re not quite ready to say that

8:39this is a lethal dose we should consider

8:41new experiments to look at lower dose

8:44rates including down to 1 ml of

8:47concentrate and to determine if that is

8:49a lethal dose

From Wikipedia, the free encyclopedia

For the Australian tree commonly named “Albizia”, see Paraserianthes lophantha.

Persian silk tree (Albizia julibrissin),
foliage and blossoms
Scientific classification
Clade:Mimosoid clade
Durazz. (1772)
About 150 species
Albizzia Benth.Arthrosprion Hassk. (1855)Besenna A. Rich. (1848)Parasamanea Kosterm. (1954)Parenterolobium Kosterm. (1954)Sassa Bruce ex J. F. Gmel. (1792)Serialbizzia Kosterm. (1954)Sericandra Raf. (1838)

Albizia is a genus of more than 160 species of mostly fast-growing subtropical and tropical trees and shrubs in the subfamily Mimosoideae of the family Fabaceae. The genus is pantropical, occurring in Asia, Africa, Madagascar, America and Australia, but mostly in the Old World tropics. In some locations, some species are considered weeds.

They are commonly called silk plantssilk trees, or sirises. The obsolete spelling of the generic name – with double ‘z’ – is still common, so the plants may be called albizzias. The generic name honors the Italian nobleman Filippo degli Albizzi, who introduced Albizia julibrissin to Europe in the mid-18th century.[2] Some species are commonly called mimosa, which more accurately refers to plants of genus Mimosa. Species from southeast Asia used for timber are sometime termed East Indian walnut.


They are usually small trees or shrubs with a short lifespan, though the famous Samán del Guère near Maracay in Venezuela is a huge Albizia saman specimen several hundred years old. The leaves are pinnately or bipinnately compound. The small flowers are in bundles, with stamens much longer than the petals. The stamens are usually showy, although in some species such as A. canescens the flowers are inconspicuous.[3]

Unlike those of MimosaAlbizia flowers have many more than 10 stamens. Albizia can also be told apart from another large related genus, Acacia, by its stamens, which are joined at the bases instead of separate.[4]


Numerous species placed in Albizia by early authors were eventually moved to other genera, most notably Archidendron. Other genera of Ingeae (AbaremaArchidendropsisBlanchetiodendronCalliandraCathormionEnterolobiumHavardiaHesperalbiziaHydrochoreaPararchidendronParaserianthesPseudosamanea and Serianthes) have also received their share of former Albizia species, as have the Mimoseae Newtonia and Schleinitzia. Some presumed “silk trees” are in fact misidentified members of the not very closely related genus Erythrophleum from the Caesalpinioideae and Lebeckia from the Faboideae.[5]

The delimitation of Falcataria and Pithecellobium, close relatives of Albizia, is notoriously complex, with species having been moved between the genera time and again, and this will likely continue. These include Falcataria falcata (the Moluccan albizia, formerly named Albizia moluccana), a common shade tree on tea plantations. Other closely related genera like Chloroleucon and Samanea are often merged with Albizia entirely.[5]


Albizias are important foragetimber, and medicinal plants,[6][7] and many are cultivated as ornamentals for their attractive flowers – notably Albizia julibrissin.[8]

Some species are used as food plants by the larvae of moths in the genus Endoclita, including E. damorE. malabaricus, and E. sericeus.


Molucca albizia (Falcataria moluccana (synonyms: Adenanthera falcataria, Albizia falcataria, Paraserianthes falcataria)) is considered an invasive species in Hawaii and on many other Pacific Islands.[9] The tree grows very rapidly and can quickly colonize disturbed areas in wet environments. It tends to shed large branches, damaging power lines, houses, and other infrastructure in Hawaii.

See also[edit]


  1. ^ Albizia Durazz. Plants of the World Online. Retrieved 4 August 2023.
  2. ^ Albizia adianthifolia. South African National Biodiversity Institute.
  3. ^ Lowry, J.B. 2008. Trees for Wood and Animal Production in Northern Australia. Rural Industries Research and Development Corporation. Indooroopilly, Queensland.
  4. ^ Singh, Gurcharan (2004). Plant Systematics: An Integrated Approach. Science Publishers. p. 445. ISBN 1-57808-351-6.
  5. Jump up to:a b ILDIS (2005)
  6. ^ Lowry, J.B.; Prinsen, J.H. & Burrows, D.M. (1994): 2.5 Albizia lebbeck – a Promising Forage Tree for Semiarid Regions. In: Gutteridge, Ross C. & Shelton, H. Max (eds.): Forage Tree Legumes in Tropical Agriculture. CAB Intemational. HTML fulltext Archived 2007-04-05 at the Wayback Machine
  7. ^ Joycharat N, Thammavong S, Limsuwan S, Homlaead S, Voravuthikunchai SP, Yingyongnarongkul BE, Dej-Adisai S, Subhadhirasakul S (2013). “Antibacterial substances from Albizia myriophylla wood against cariogenic Streptococcus mutans”. Archives of Pharmacal Research36 (6): 723–730. doi:10.1007/s12272-013-0085-7PMID 23479194S2CID 11823016.
  8. ^ Albizia julibrissin. RHS. Retrieved 27 February 2020.
  9. ^ Common Forest Trees of Hawaii (Native and Introduced)- Molucca albizia – CTAHR UH Archived 2015-09-23 at the Wayback Machine Albizia (Falcataria moluccana) – BIISC Archived 2012-10-30 at the Wayback Machine.

External links[edit]

Wikimedia Commons has media related to Albizia.

Taxon identifiersWikidataQ664945WikispeciesAlbiziaAPDB: 187922APNI80280CoLRJBEoL1271473EPPO1ALBGFloraBase21512FoAO2AlbiziaFoC100949GBIF2972897GRIN356iNaturalist47451IPNI21602-1IRMNG1352561ITIS26448NBNNHMSYS0020704059NCBI3812NZOR: d99d0720-bf0c-486e-9d16-2bbbc24315d8Open Tree of
Authority control databases: National Israel


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