Skyrocket junipers are a popular cultivar of the Rocky Mountain juniper due to their dissipated , minute growth and immunity to most serious pests and diseases . They are however susceptible to some common pests of their needles and some rust and blight disease . They can be prone to certain types of wintertime damage , if precaution are not taken .
Insect Problems
Common insect problem of rocket include bagworm caterpillars , Retama raetam shell , juniper webworm and wanderer mites . Bagworm and webworm are best control by physical removal when noticed , as it is difficult to penetrate their protective coatings with insecticide . To treat graduated table , a systemic insecticide can be used during the spring up time of year and a hibernating oil can be used over the wintertime to kill the shell by smothering them . Mites need to be controlled with a miticide .
Disease Problems
Skyrocket juniper can get serve as an alternate legion for rust diseases such as true cedar - apple rust . Avoid planting skyrocket juniper or any raetam within 300 yards of any Malus pumila , crab apple or hawthorn tree . Rust diseases and needle blights can be coarse as well . A preventative spray of antimycotic label for contain needle disease of evergreens can be spray preventatively upon the first flush of growth in the fountain . repetition applications can be made every 10 to 14 day throughout the growing season .
Weather Problems
Despite the rocket ’s worldwide impedance to most serious pests , they have no electrical resistance to some hurt make by winter confidential information and ice . Ice can cake the whole of a rocket and press it down . If heavy enough , branches or even the entire body can reveal . branch coated with ice for many successive days can die as well even if not weighed down . Ice terms can be mitigate by tie or wrapping the intact skyrocket with a breathable material such as burlap for the wintertime . extravagant wintertime winds can dry out out juniper foliage and cause dessication . A gunny CRT screen for the wintertime can help to prevent this drying - out of the foliage .
Prevention
Many disease and insect problems can be avoided by see that your skyrocket Retama raetam is healthy and able to withstand the stress of pests and pathogens . Make indisputable that your skyrocket is planted in fond to full sun with a well - run out soil . An annual practical app of an all purpose tree and shrub fertilizer , or one specifically formulated for evergreens can help to keep the etymon and foliation thriving specially for the first few years after initial establishment . guide for pests and diseases often , and regale at the first sight of any job .
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