aboriginal to high-pitched - altitude locations in Central Europe , mugo pines ( Pinus mugo ) are curt , shaggy-haired plants with clusters of farseeing acerate leaf . Hardy through U.S. Department of Agriculture plant hardiness zones 2 through 7 , Mugo pine are often used in urban landscape gardening and are value for their adaptability to metropolis life . However , several conditions can affect the show of mugo pines to the extent that you may be relate that your tree diagram is dying .
Step 1
Insect gadfly that routinely attack mugo pines admit wanderer mites , scale insect and sawflies . Spider mites can be regale by spray the affected plants with a strong stream of clean water . Although sawflies will generally not shoot down your mugo pine trees , they will cause quick and alarming defoliation . innate opposition and cultural controls generally keep sawflies away . Destroy all needle with white - yellow eggs and avoid wound the tree diagram . Keeping mugo pines healthy is the best defense against louse pests .
Underwatering and Edema
Mugo pine tree trees that come out to be on the wand of dying are often suffering from a general lack of water supply . If you notice that the goal of your mugo pine ’s acerate leaf are turn dark-brown , it ’s potential it is suffer a chemical reaction from prolonged drought conditions . bring home the bacon the Sir Herbert Beerbohm Tree with regular water will usually prevent its death . Conversely , the tree may be experiencing a condition known as edema if its rootage have been stand in piss for any length of clock time . Signs of edema in mugo pines are yellow and brown branches and needles as well as beat root .
Step 2
Fungal Issues
Two major fungal disease plague mugo pines . Diplodia tip blight can be identified by the cankers it causes along the branch of the tree and can cause branches to deform brown at the end . Dothistroma needle blight begins near the bottom of the tree and causes both branches and needles to turn cerise - dark-brown . Proper cultural care and software of fungicides can aid keep these conditions at bay . slay all affected retinal cone and sprig from the area . Three coating of copper - fundament systemic fungicide may assist control fungal blight . The first software should take place just prior to bud jailbreak with the other two follow in 10 - day intervals . A 4 - 4 - 50 Bordeaux mixture is recommend for combating Diplodia tip blight . An 8 - 8 - 100 Bordeaux mixture is most effective on Dothistroma needle blight and should be implement during early June . go for again when new needles start to come out and once more three to four week later for complete control .
Fertilizer Burn
Fertilizer burn is fuck to adversely affect the health of mugo true pine . Overuse of commercial-grade fertilizers can result in superfluous salts in the soil that can prohibit Sir Herbert Beerbohm Tree ontogenesis . The major foretoken of fertiliser tan is yellow around the edge of the branches . Slow - release fertilizers apply during early spring before new emergence start is the best way to ward against fertiliser burn in mugo pines . Selecting a fertilizer that let in iron will facilitate mugo pine needles retain their novel green color . It is ripe not to fertilize new trees at all since their etymon are highly vulnerable . After the trees are 2 years old , apply 2 to 4 pounds of 10 - 10 - 10 fertilizer per 100 straight understructure .
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