Are they invasive? Not legally in the state of Illinois. (Yet!) But we are seeing Callery pear and burning bush escape from our yards into natural areas across the state. Today Ken and Chris talk about these two plants, give some background, and then what we can plant instead of these baddies!...
- Mechanical: Not recommended.
- Cultural: Not recommended.
- Chemical: Always read and follow the herbicide label before initiating treatment.
- Foliar: Apply 2% to 4% v/v glyphosate in water or 1% to 2% v/v triclopyr in water.
- Basal bark: For plants 4 inches in diameter or less, apply a triclopyr ester formulation at a 20% v/v rate, mixed with basal oil, to the lowest 15 inches of the stem.
- Cut stump: Apply glyphosate at a 25% to 50% v/v rate in water or triclopyr amine in water or ester in oil at a 20% to 25% v/v rate within 10 minutes of cutting.
From the Management of Invasive Plants and Pests of Illinois guide.