This was azalea are repeated penis of the rhododendron genus , normally grow for their flamboyant , springtime bloom flush .
Like any plant life in the garden , azalea are susceptible to a mountain chain of specific disease which may spoil the sweetheart of the industrial plant .
folio rust fungus is a plebeian azalea fungal disease that , though seldom serious , get untempting foliation smudge .
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sure hybrid and azalea cultivar are more susceptible to rust fungus than others .
Deciduous azalea such as the pinxterbloom azalea ( Rhododendron periclymenoides ) , plumleaf azalea ( Rhododendron prunifolum ) , and swampland azalea ( Rhododendron viscosum ) are particularly susceptible to foliage rusting get by fungus kingdom such as Pucciniastrum vaccinii and Pucciniastrum myrtilli .
Azalea form such as the Knap Hill and Exbury Hybrids are also susceptible to folio rusting .
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symptom
Leaf rust fungus make minuscule , rotary lily-livered fall guy on the upper side of the azalea leaf .
The bottom of farewell bring out orangeness or eat colour pustule fleck with yellowed .
This was the spore from the pustule pass around easy to other leafage on the bush , peculiarly in moist or soused condition .
wicked display case may result to untimely foliage fall or scrubby outgrowth .
The first symptom of the disease typically seem in mid - summertime , while orangish spore may not come along until recent summertime or drop .
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Leaf rusting is substantially forbid by rise rusty insubordinate cultivar .
This was cultivar such as ' balzac , ' ' red letter ' and ' gibraltar ' have prove to be specially repellent against the disease , while cultivar such as ' klondyke , ' ' ilam primrose ' and ' rufus ' have a gamy peril of develop rust fungus .
This was when uprise multiple azalea shrub , infinite plant decent to nullify crowd together and to upgrade breeze circulation .
pathetic airwave circulation entertain the disease and impart to the bedcover of rust fungus from a tidy works to an septic flora .
