1. David Hodge, President, Turning Leaf Conservation Co.
Techniques for Controlling Solidago altissima (Tall Goldenrod) in Natural Areas
David Hodge, President, Turning Leaf Conservation Co.

2. Characteristics that Make Tall Goldenrod Difficult to Control
Forms monocultures
Produces tremendous number of seeds
Rhizomatous
Allelopathic – ester formulations

3. Control Methods Hand pulling
– Usually leaves roots /rhizomes. Is not feasible on a large scale
– Seems to have no effect. Hard to burn in areas with dense goldenrod
– Shown to keep goldenrod from spreading (theoretically controls it)
– Offers best means for control
Hand pulling
Burning
Mowing
Herbiciding

4. Herbicides Used for Control of Goldenrod
Transline (1.5 – 2%)
Pros
Best herbicide available for controlling goldenrod
Cons
Can affect other species (composites)
Not approved for use over water
Slow acting
Garlon 3A (5%)
Works quickly
Can be used over water
Not as selective -- kills other forbs
Not as effective as Transline

5. Other Solidago Species of Concern
Solidago canadensis: Canada Goldenrod
Solidago gramnifolia: Grass-leaved Goldenrod
Solidago sempervirens: Seaside Goldenrod