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 Botanic Garden >> Gardening >  >> Question and Answer >> Plant Species >> Cactus

Biological Control of Invasive Prickly Pear: Cactoblastis Moth Introduction

Case: Illinois Yard Overrun by Wild Prickly Pear

Mason County (Havana) property overwhelmed by native prickly pear. Too numerous for manual removal. Seeking natural eradication.

Biological Control Option

  • Agent: Cactoblastis cactorum (cactus moth)
  • Proven success: South Africa, Australia
  • Mechanism: Larvae bore into pads, killing plants
  • Reference: IAEA technical summary (link provided)

Considerations

  • Native species - ecological role considerations
  • Moth may spread beyond property
  • Regulatory approval may be required
  • Timeline: Months to years for control

Alternative: Targeted Herbicide

Selective application to individual plants if biological control unsuitable.

Cactus
Prickly Pear Pad Propagation: Yellowing Top on Rooted Cutting
Small Round Cactus ID: Mammillaria or Notocactus; Flower Was Glued On
Weeding a Mature Prickly Pear Patch
Propagating Prickly Pear from Pads
Prickly Pear Growth Surge After Relocation: Light Response vs. Flowering
Eradicating Prickly Pear: Diesel Poisons Soil; Use Biological Control
Fixing Skinny, Etiolated Cactus: Support and Light Correction
Prickly Pear in New Jersey: Native or Naturalized?
Forcing Prickly Pear to Flower: Patience Required
Prickly Pear Control: Herbicide Not Diesel
Garden Articles

Rescuing a Stress-Damaged Columnar Cactus After Relocation

Repotting a 7-Foot Columnar Cactus Safely

Prickly Pear Brown Spots: Scale Insect or Fungus

Ocotillo (Fouquieria splendens) Relocation: Rescue Clubs and Legal Checks

Propagating Prickly Pear Cactus in Southwest Florida

Brazilian Prickly Pear (Brasiliopuntia brasiliensis): A Tree-Like Cactus with Flattened Branches

Are All Prickly Pear Cactus Fruits Edible? Most Are, But Handle Spines Carefully

Plants

Follow-Up Care for a Toppled Columnar Cactus: Stabilization and Recovery

Identifying a Mystery Columnar Cactus

Fixing Severe Etiolation on a Tall Indoor Cactus ("Cactus Jack")

Saving a Dying Cactus: Propagate Healthy Segments

Cochineal Nopal Cactus (Nopalea cochenillifera): The Historic Dye Cactus

Prickly Pear Cactus (Opuntia monacantha): The Drooping Paddle Cactus

Cow's Tongue Prickly Pear (Opuntia engelmannii var. linguiformis)

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