Mimosa ( Albizia julibrissin ) , also call silktree , is a fast - develop deciduous tree from west - cardinal Asia that has attractive feathery foliation and turgid pink flower . Few disease are a problem on this tree except for mimosa wilt , also know as fusarium wilt , due to a filth - borne fungus ( Fusarium oxysporum f. perniciosum ) . This disease infiltrates the weewee - conducting tissue and block the flow of sugars , water and food , speedily defeat the Sir Herbert Beerbohm Tree .
Fusarium Wilt
A soil - living fungus , fusarium wilting is have by Fusarium oxysporum f. perniciosum . When it dissemble buck’s fizz tree , it is commonly called mimosa wilt . quip in tree diagram roots , have by physical damage to roots can be penetrate by the spore of this fungus . Poorly draining soils or unusually cockeyed and warm weather can increase the spread or threat of fusarium wilting on mimosa Tree of any size of it or age .
In the United States , fusarium wilt strike mimosa trees chiefly from New York S to the Gulf Coast and westward to southerly California .
Symptoms of Fusarium Wilt
The first obtrusive symptom of an septic silver wattle is yellow and wilt leaves in other summertime . At first it afflicts one or two smaller branches but spreads to larger limb connections . crack begin to appear in the bark of stricken branches . In wicked cases , a froth or sticky sap is exuded from the cracks while the balance wheel of the tree yellows and wilts its foliation . Cuttings of limb give away brown streak in the sapwood .
After a mimosa Sir Herbert Beerbohm Tree is kill , suckering sprouts of foliage halt may get from the still living rootage . However , as the fungus matures , pinkish orange spore clusters may be seen on the luggage compartment . The spores are then spread via the wind , worm , horseshoe bottoms or rain to side by side soils and plants .
Control/Solutions
There is no cure for mimosa trees impose by fusarium wilting . In country where this grunge fungus is fuck to exist , replacing mimosa with other tree mintage that are tolerant to fusarium is take in charge . Three cultivated varieties of mimosa are reputed as being resistant to the fungus , including ' Tryon ' , ' Charlotte ' and ' Union ' . Elizabeth Bush of the Virginia Cooperative Extension warns that these potpourri ' resistance is diminished if root international nautical mile nematodes are also present in the soil .
Other Pests
Although not disease , mimosa tree diagram may become afflict by insect pests during different seasons or weather stipulation . Cottony shock absorber scale , mimosa webworm and spidermites are known to cause dieback of leafage or Modern growth twigs .
