Growth Regulators: B-Nine spray at 1,500 – 2,500 ppm if needed. Patina
Ageratum generally doesn’t need any PGR if grown under high light and
adequate spacing. After plants are established, cool temperatures can be used to
control growth.
Insects: Aphids and Whiteflies. Scout plants regularly and control using
appropriate chemical and biological products.
Diseases: Fungal Root Rot. Avoid over-saturated media, especially early on in
production.