Cercospora Leaf Spot — Cercospora spp.

Spotlight Name Archive: Leaf Spots

Spotlight Header Archive: Disease Diagnostics Photo Library

Host: Cordyline, dracaena, ficus, hosta, hydrangea, pansy, pittosporum, succulents
Symptoms: Cercospora leaf spot on some foliage plant hosts appears as tiny, slightly raised red or dark green spots that appear on the lower leaf surfaces. On Ti plants rust-colored specks form initially then enlarge into elliptical areas up to 7 mm across and turn tan to brown in color. On pansies, small purplish spots enlarge into conspicuous black spots with fringed margins 1/4 inch or more in diameter. Other symptoms include angular leaf spot.
Conditions Favoring Disease: Cercospora leaf spot is associated with heavy rainfall or with the use of overhead irrigation.
How Pathogen Survives/Disperses: Spores are spread by splashing water. Extended periods of leaf wetness allow spores to germinate and infect the foliage.
Photo and write up provided by Syngenta Professional Products

(Visited 13 times, 1 visits today)
from Syngenta Horticultural Services

Latest Photos see all »

GPN recognizes 40 industry professionals under the age of 40 who are helping to determine the future of the horticulture industry. These individuals are today’s movers and shakers who are already setting the pace for tomorrow.

75 Applewood Drive, Suite A
P.O. Box 128
Sparta, MI 49345

Get one year of Greenhouse Product News in both print and digital editions for free.
Preview our digital edition »

Interested in reading the print edition of GPN?

Subscribe Today »

Be sure to check
out our sister site.
website development by deyo designs