Beetles-the common garden invader

Abell Pest Control

When a beautiful spring day presents the perfect opportunity for throwing on your work gloves and digging your fingers into the rich soil for the first time, the last thing you want to deal with is a host of garden pests. From caterpillars and cutworms to maggots and beetles, there are a number of unwelcome invaders that could chew up your fresh vegetable plants and lovely blooming flowers. However, one of a variety of beetles may just be the most likely to come crawling through your plants.

Colorado potato beetles
There are a number of different kinds of beetles known to be a nuisance for anyone with a garden. According to Rodale's Organic Life, the Colorado potato beetle can create a lot of damage by reducing yields, defoliating plants and even killing young plants. Yellow-orange in color, these adult beetles typically have 10 black stripes on their wings. Feeding on eggplants, petunias, tomatoes and - you guessed it - potatoes, they're found throughout much of North America.

Prevention methods include using deep straw mulches, placing floating row covers over your garden and spraying plants with neem or spinosad.

Ground beetles
While there are several hundred species of beetles found throughout Canada, the largest family is the ground beetle. According to the Canadian Biodiversity Information Facility, ground beetles account for close to 930 different species. Ground beetles, or Carabid beetles, are very fast with long legs and usually only come out at night. Mostly found under damp stones, wood and leaves, they are dark in color and therefore difficult to spot. Unlike other beetles however, ground beetles actually feed on other pests - making them useful for insect control.

Flea beetles
The flea beetle is extremely common and is usually found on vegetables and flowers, and occasionally on shrubbery. Very small in size, flea beetles can be gray, brown, black or blue and some of them will have stripes, according to the University of Minnesota Extension. When disturbed, they use large black legs for jumping. Feeding on a variety of plants, beetles leave rounded but irregular-shaped holes in leaves. If heavy enough, beetles will cause plants to droop.

Found in gardens across the entire region of Canada, these beetles cause the most damage during the spring so be sure to keep a close eye out. Careful inspection can help spot these beetles and sticky traps can help to catch them.

Japanese beetles
Rodale's Organic Life reported that Japanese beetles are typically a 1/2-inch in size with dark metallic bodies and bronzed wings. Attacking small fruits, flowers and some vegetables, they have been known to cause significant damage. According to Canadian Gardening, the hot spot for Japanese beetles is on turfgrass roots in regions across Southern Ontario over to Eastern Canada.

In the early morning, these beetles can be easily shaken off most of the plants in your garden and if they aren't, spray them with an insecticidal soap. Floating covers work for preventing this beetle as well. The larvae of Japanese beetles can also cause damage to plants in your surrounding property as they feed on garden plant roots as well as your grass.

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