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Garden Pests

Cranberry Mite

Plants Affected - Cranberry
• Small gall like growths are seen on the surface of maple leaves in early to mid-summer.
Controls - Cultural or Non-chemical Controls:
• Prune out affected sections as soon as damage noted.
• Spray bare branches with lime sulphur either in fall after leaves are shed or in spring before bud break.
Controls - Chemical:
• No chemical insecticides are effective; damage is cosmetic and will not harm tree.


Plants Affected - many - seen lots on Ash, Linden, Virginia Creeper and Grape.

• Sap suckers—deform leaves by stippling them.
• Insects jump away when you near the plant.
Controls - Cultural or Non-chemical:
• Strong jet of water will knock them off plants
• Ladybugs, birds feed on them.
Controls - Chemical:
• Insecticidal Soap
• Permethrin based insecticide such as Doktor Doom House and Garden (not on edibles such as grape)


Plants Affected - Numerous
• Severe infestations will cause curling/twisting of foliage, flowers to wilt and drop.
Controls - Cultural or Non-chemical:
• Ladybird beetles/larvae, lacewings are natural predators.
• Strong jet of water to knock aphids off plants.
Controls - Chemical:
• Insecticidal soap, Doktor Doom House and Garden and various other insecticides.


Plants Affected - many
• Foliage has holes in it, may see lots of excrement with larger numbers of sawflies.
• small worms come in numerous colours – white, green, black.
• When disturbed larvae will form a distinctive ‘S’ shape with their bodies.
Controls - Cultural or Non-chemical:
• Handpick small amounts
Controls - Chemical Controls:
• Spray with Sevin, Doktor Doom House and Garden, or Ambush (BTK will not work because these are not larvae of moths and butterflies but larvae of sawflies).


Plants affected:
• Aspen, Poplar mostly but also Apple, Ash, Elm.
• Egg masses found in late spring; eggs covered with Form silken tents over themselves where they rest and feed.
Life Cycle:
• Eggs laid in early June, eggs hatch 4-6 weeks later
Cultural/non-chemical Control:
• Remove ‘tents’ - best done in late evening or early morning
• Handpick, scrape cocoons off of branches in summer.
• BTK - spray foliage with BTK, repeat within 5-7 days. Thorough coverage of the   foliage is required.
Chemical Control:
• Not recommended, BTK very effective.

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