- - TIPS bit.ly/CSUjb bit.ly/japbeetle bit.ly/CSUJapBeetle can be effective for gardeners. can be effective late in the day when tempera tures cool. beetles don’t attract live ones. is critical. Late summer is more than spring. effective choose plants beetles avoid week keeps grass alive and too dry for grubs Hand-picking beetles off plants Hand-picking beetles off Beetles are less active early or dead Crushing them is okay, If treating plants or turf, timing Switch to xeriscaping or Deep watering lawn once a Credit: Whitney Cranshaw, Colorado State University State Colorado Cranshaw, Whitney Credit: » » » » » » bit.ly/palisadeJB » » » » » »

- USDA guide: USDA CSU Q&A: CSU Extension: - - ), mi Ovavesic Popillia japonica Popillia Reported by ), parasitic Community united over peaches (economic All lawns in public areas plus 712 homes only horticul Under authority of Colorado’s Read the story: Discovered infestation early motivation) treated or dried out ture pest-control district so property owners could be forced to participate How Palisade beat the Palisade How • • • • • Tiphia vernalis, Tiphia ). aldrichi Insecticides can kill adult Natural predators include birds, Drying out lawn (Jun-Aug) beetles, but must be sprayed labels to see if it Read directly. hurts beneficial . par Also: racoons and skunks. asitic wasps ( popilliavora Tiphia ( crosporidian disease ( ula popilliae makes turf inhospitable but lawn can grubs in a neighbor’s to your garden as adults. Grubs need moisture to survive. • • • - - - 2. Dahlia 3. Hibiscus 4. Common mallow 5. Evening-primrose 6. Soybean smartweed Penn. 7. 8. Rose 9. Grape corn Sweet 10. Susceptible Plants Hollyhock 1. Know your bug: your bug: Know , Colorado State : Females lay 40-60 eggs : Females lay 40-60 Grubs burrow 8-10 inches or Grubs head back to surface 1 year, though adults live about though 1 year, Eggs hatch after two weeks. Eggs hatch after Feeds on 300 species of plants, Feeds on 300 species Adults mate. Females lay eggs in Adults mate. Females lay eggs

Whitney Cranshaw Milky spore bacteria is Beneficial nematodes are Traps attract beetles from Traps habditis. Also need water to habditis. survive and are pricey. your yard. spread on lawns and in gested by grubs, which die. But CSU says the treatment inconsistent and impacts a small population. that parasitic organisms larval or feed on ’s pupal stage. Pick nema todes in the genus Heteror 1-2 miles away, not just 1-2 miles away, Grubs feed on grass roots for 3-4 weeks Grubs feed on grass roots for 3-4 Fall-winter: below frost line during winter April-June: roots and but stay underground to feed on pupate into an adult Lifespan: 30 to 45 days Reproduction Threat: loves watered lawns July: than 3-inches deep the ground no more August: 8. Foxglove 9. California poppy Coral-bells 10. Resistant Plants Ageratum 1. 2. Columbine 3. Dusty-miller 4. Begonia. 5. Lily-of-the-valley 6. Coreopsis Larkspur 7. Treatment Pros & Cons Treatment Credit: Agriculture; USDA University; Colo. Dept. of • • • Do you have Japanese beetles? Japanese have you Do plants, some 300 and creeper Virginia on roses, feed They to miss. are hard beetles Adult and underground grubs develop Young and fruit. leaves, flowers and damaging leaving holes grubs. a sign of hungry of brown grass is patch softball-sized A eat grass roots. typically

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Illustration: Dale Taylor, Illustration: Dale Taylor, Special to The Colorado Sun UNDER GROUND