Identifying Potato Pests (and Natural Solutions)

Potatoes are unfortunately loved by bugs and critters as much as gardeners. The good news? With a bit of regular attention, you can spot pests early and use natural controls to keep your crop healthy and your soil chemical-free.

Common Potato Pests

• Colorado Potato Beetle:
  Yellow-orange beetles with black stripes; their larvae and adults eat leaves rapidly.
• Aphids:
  Tiny green, black, or white insects clustered on leaves and stems; suck plant sap and spread disease.
• Wireworms:
  Thin, hard larvae found in soil—tunnel into young tubers, causing holes and rot.
• Slugs & Snails:
  Leave ragged holes in leaves and chew tubers, especially in wet weather.
• Cutworms:
  Fat, grey or brown caterpillars that may cut off young stems at ground level.
• Flea Beetles:
  Small, black beetles making tiny “shot holes” in leaves.

Natural Pest Solutions

• Hand-Picking:
  The simplest (and organic) method for Colorado beetles, slugs, and snails—inspect leaves early morning or dusk.
• Encourage Beneficial Insects:
  Ladybugs, lacewings, and hoverflies feast on aphids—plant marigolds and nasturtium to attract them.
• Neem Oil or Insecticidal Soap:
  Safe for plants and people; spray as directed to manage aphids and young beetles.
• Crop Rotation:
  Avoid growing potatoes in the same spot two years running; breaks pest life cycles like wireworm and cutworm.
• Mulch and Beer Traps:
  For slugs, use mulches they don’t like (straw, pine needles); bury beer traps flush with soil to attract and drown slugs/snails.
• Floating Row Covers:
  Lightweight fabric covers keep flying pests (like beetles and flea beetles) away.

Early Detection is Key

• Inspect plants twice weekly, checking both sides of leaves.
• Remove yellowed, chewed, or sticky leaves as you spot them.
• If pest populations explode, try a combination of natural methods for rapid reduction.

Disease Transmission

• Aphids may spread viruses and should be controlled quickly.
• Remove any viral-diseased plants (mottled or twisted leaves).

Pro Tips

• Keep your plot clean of debris and weeds that harbor insects.
• Don’t over-fertilize; lush growth attracts aphids and beetles.
• Attract birds to your garden—they’ll naturally prey on many potato pests.