Larkspur - Tall

Scientific Name: Delphinium barbeyi

Family: Ranunculaceae

Structure: 2-6 feet in height, hollow stem.

Life Cycle: Perennial.

Flowers: Blue flower with a spur.

Treatment:

Application Timing: Treat from the rosette to bud growth stage. Apply when plants are approaching maximum vegetative growth, but before flowers open.

Recommendation:
1–2 quarts of Tordon^® 22K herbicide per acre. Rates at the lower end of the labeled rate range will require annual retreatment for several years.