What's eating my agastache 'black adder'?

Agastache 'Black Adder' shares the pest-resistance of the Agastache genus — strong anise-mint scent repels deer and most browsing animals. The four-lined plant bug is the most common insect problem, creating spotty leaf damage in early summer. Aphids are occasional. This cultivar is bred for vigour and generally shrugs off minor pest pressure.

Circular sunken brown or translucent spots on upper leaf surfaces; red-and-black nymphs visible on new growth in late spring Hand-pick nymphs and eggs; apply neem oil or insecticidal soap to tender growth; plants typically recover fully once adults complete their lifecycle in midsummer

Small colonies on soft shoot tips in spring; honeydew and minor leaf curl; rarely builds to damaging levels on Agastache Dislodge with water; one application of insecticidal soap usually resolves; beneficial insects provide ongoing control

Pale stippling across leaf surfaces; tiny wedge-shaped insects jump when disturbed; heavy feeding causes general yellowing Insecticidal soap targeting undersides; reflective mulch deters adults; remove weeds around the bed that serve as leafhopper reservoir hosts