An evergreen plant life , the mugo pine ( Pinus mugo ) produces coloured - green needle . Its various cultivars fall in sizes between 15 and 20 foot in height when fledged . It grows well in U.S. Department of Agriculture works hardiness zones 3 to 7 , especially when it encounter mickle of sun and wet in the soil .
An evergreen plant , the mugo pine ( Pinus mugo ) produces disconsolate - green needles . Its various cultivar do in size between 15 and 20 foot in tallness when matured . It grows well in U.S. Department of Agriculture works hardiness zones 3 to 7 , peculiarly when it receives plenitude of sunlight and moisture in the filth . The mugo pine suffers from several fungal disease .
Tip Blight
The fungus Sphaeropsis sapinea attack mature mugo pine tree that are at least 12 years of geezerhood . It usually attacks in the spring , but may decline in mid- to late summertime and drop . The disease stunt new phonograph needle development , turning them brown , twirl and eventually killing them . sometime needle also die as the disease progresses . A small , dark fungus appears at the needles ' cornerstone . This disease weakens and kills infected mugo pines in time .
Needle Blight
Also eff as red band needle blight , the fungus Dosthistroma septospora causes dothistroma needle blight . The disease usually appears in betimes the tumble , starting at the tree ’s lower theatrical role . It form band around needle , first appearing dark green and later turning brownish or red . The hint of infected needle die , but their root word remain light-green . The infected part may bend down or fall off . In the descent , black spot appear on these dead summit .
Pine-Oak Gall Rust
Pine - oak bitterness rust or Eastern gall rust cause swellings , bitterness , on the stems and branches . Each gall may measure up to 10 inches in diameter . In the summertime , yellow or orange powder appear on the impudence . These powder are the spore of the fungus . The fungus ( Cronartium quercuum ) then incite to a innkeeper of the oak house , make rusty spots to appear on the leaves .
Management
bump off septic part with the stain or gall minimizes hurt . This thin the spread rate of the disease . Fungicides also help ensure these diseases . Regular spray of preventative antimycotic agent ferment well with tip blight and phonograph needle blight . Use the appropriate antimycotic agent to spray the mugo pine doubly a yr for needle blight or three times a year for tip blight . For pine - oak tree gall rust fungus , only apply a fungicide comprise mancozeb when yellow blisters appear on the galls .
