Freckles may be cute on your kids , but ifyour rubber tree(Ficus elastica ) has browned spots stud on its leaf , it is likely a symptom of disease or else of harmless aesthetics . Whether you grow it alfresco in U.S. Department of Agriculture plant hardiness zones 10 through 12 , or indoors as a houseplant , rubber tree is susceptible to various diseases that mar its foliation with brownish spots .
Anthracnose
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Anthracnose , a fungous disease that lash out many plants , is due to different pathogens , but on rubber Sir Herbert Beerbohm Tree the primary wrongdoer are species of the Glomerella and Colletotrichum genera . Because these fungi need water supply to procreate , tight leaves provide a favorable environment for this disease to thrive . folio pip may appear initially as tiny , yellow-bellied dots , but they eventually ferment dour brown . Diseased leave-taking may fall down from plants , where they harbor fungal spores that may go on to infect your industrial plant .
Botrytis Blight
Botrytis blight , which is due to the pathogen Botrytis cinerea , is another fungal disease that may cause brown topographic point on golosh tree ’s foliage . In dividing line to the smaller DoT of anthracnose , blighted berth are larger and are typically butt on by layers of rings . This ringed result give this disease its common name , gray mildew , because of its moldy appearance . Infected folio may drop prematurely and go along to produce infective spores . Botrytis favour cool weather , in particular during a wet bound .
Bacterial Blight
Bacterial blight , due to the pathogen Xanthomonas campestris pv . fici , is the chief bacterial disease of ficus species , note University of Florida IFAS Extension . Unlike fungous leaf spot disease , bacterial blight does not need piss to multiply , although it may spread to plants by splashing from the soil to the leave or from works to plant . Bacterial blight invades a gumshoe tree through wounds , such as pruning cuts , or natural openings , such as the stomata that come naturally on leaves . Leaf smirch bring forth by this disease look different than those because of fungal diseases . ab initio , the dapple are tiny water - soaked dots that mature together into on an irregular basis shaped dark-brown lesions .
Disease Management
If you notice chocolate-brown post on your rubber tree , whether they ’re due to a fungal or bacterial problem , it may be hard to manage the disease . Once you note brown spots , a disease is already present . Remove all leaves with browned spots from plants , and also polish off any shed leaves to aid break the life story cycles/second of these disease . If you grow safe tree alfresco , keep its leafage dry by moving sprinkler or redirecting sprinkler heads away from the flora , and do not haze over your plant if you grow it indoors . If your India rubber tree is in a container , repot it in desexualise potting admixture and discard the contaminated soil .
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