Several factors , known as causal broker , can cause tree diagram disease . The Florida oak is affect by these agent , both biotic ( life ) and abiotic ( non - survive ) . Living agents are pathogen - disease - produce organism . They are not the disease themselves , but the pathogens that make the disease . Pruning and using fungicides can control several disease . learn with your nursery for the right antifungal for the disease that affects your Florida oaks .
Anthracnose
Anthracnose infects white oak tree leave , leaving idle , brown areas along the vein . As the disease move on and start to severely sham the foliage , allow curl , and light off during the rainy time of year . Anthracnose affect the lower branches more severely than the upper limb . It eventually spreads to sprig and forms canker . It is because of the fungus , Gnomonia quercina . Anthracnose overwinters on the leaf and is pass around by rain or sprinkler weewee . The fungi germinate on new maturation , and enter the leaves and raw twigs . During the moist , humid rainy season , another genesis of spores come about in the antecedently infected parts of the leaves .
Leaf Blister
The fungus Taphrina coerulescens causes leaf blister . This disease taint the folio of Florida oaks . It induce yellowish - clean spots up to a half - column inch in diameter on the leaf . The slur are generally circular , farm and wrinkled . The affected leave-taking do not fall and function as normal leaves . Wind and rainwater spread spores to young buds . The spores lodge themselves under the bud scales and overwinter there . They germinate in the spring and induce new infections .
Large Leaf Spot
orotund foliage smudge is make by a effortless fungus , Monochaetia desmazierii , and infects the leaves of cerise and whitened oaks . The disease stimulate 2 - in orbitual spot with yellow centers and reddish - brown margins to take form on leaf . When the disease progresses , rings form around the spots .
Common Oak Tree Diseases
Oak is part of the mutual name of about 400 mintage of trees and shrubs in the genus Quercus . Oak trees are beloved for their grand , beautiful appearance and their lovely foliage in fall . These chemical group includered oaks , know oaksandwhite oaks . you may easy place an oak tree diagram by its leafage contour because the shape mold the species of oak tree . tree in thewhite oakgroup have fan - shape leaves with blunt or rounded tips ; trees in thelive oak grouphave ellipse leaves with pointed to rounded tips ; and trees in there d oakgroup have fan - shape leave with blunt or rounded tips . The cap of the mushroom is typically about 1/2 to 6 inches in diameter with a more or less depressed center . Leaf symptoms typically include chocolate-brown spot or patch up that enlarge outward to the folio margins . You may involve a magnifying glass to see these spots . ) * Oak wilt disease is a fast - spreading and fatal disease that ’s do by the fungusCeratocystis facacearum . This disease affect the vascular system of the Sir Herbert Beerbohm Tree . Here are some prove - and - unfeigned way to manage diseases and salve your oak tree Sir Herbert Beerbohm Tree from dying off ( or foreclose other trees from being regard ) , organized by disease type : * * Luckily , folio blister is seldom severe enough to need control measures ( and fungicide treatments are generally ineffective ) . * * * Armillaria Root Rot . * * Remove the diseased tree(s ) along with as much of the radical system as possible . Any tree with fungal fruiting structures , such as those with ganoderma root rot , should be removed right away . * * * Powdery Mildew . * * Avoid injury to the trunk and never put on filling grease around the tree . * * * Oak Anthracnose . * * Prune and destroy dead sprig and branches during dormancy ; apply a antimycotic to protect fresh leaves and subdivision . ( luckily , footling scathe results from this disease ; no control action is recommended . If you care for your oak tree diagram by properly pruning it , using oak tree fertilizer and water it the correct amount , this will help your tree remain healthy and better able to stave off infection or have diseased acorn and experience other environmental stressor . Depending on the type of oak , a little goes a long way ( and you may not even ask to irrigate at all ) . * debar -injury to your oak during favorable conditions for infection ( typically in spring and former summer ) in the form of terms from construction , serious violent storm or pruning .
