Harrell's Compendium of Tropical Plant Diseases & Disorders

TROPICAL PLANTS COMMONLY AFFLICTED BY ALGAL LEAF SPOTS Cephaleuros parasiticus

MANAGEMENT RECOMMENDATION

Cephaleuros virescens

Aglaonema Anthurium Bouganvillea Bromeliads Croton English Ivy Eugenia Ficus Gardenia Ginger Heliconia Hibiscus Philodendron Sansevieria Spathiphyllum

+ M inimize plant stress with proper nutrition and irrigation. Space plants to apart to increase air flow to reduce humidity.

FUNGICIDES FOR CONTROLLING ALGAL LEAF SPOTS Tradename

FRAC Group

Chlorothalonil

Daconil Ultrex®, Daconil Weatherstik®

M5

Phosphorus acid

Oxiphos®

P07

Copper octanoate, copper oxychloride

Camelot® O, Grotto®, COC DF

M01

Bacillus amyloliquefaciens *

Triathlon® BA, Double Nickel®

BM02

- - - -

Sodium carbonate peroxyhydrate

Phycomycin®, GreenClean® Pro

Reach out to your Harrell’s rep for more information.

Quaternary ammonium (DDAC)

KleenGrow TM

Hydrogen peroxide + peroxyacetic acid

Zerotol®

Potassium bicarbonate *

MilStop®

Follow the product label and rotate between FRAC groups to reduce resistance development * May not perform well under high disease pressure.

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