|Decay at the terminal portion of the flowering stem of |
poinsettia, due to infection by Botrytis cinerea
|Dark blotches are bract|
infections by B. cinerea
Botrytis cinerea can wreak havoc with many different host species, even causing canker on rose canes and fruit rot on plants such as strawberry. More specialized species of Botyrtis also exist. One is Botrytis elliptica, which affects primarily lilies. Botrytis tulipae causes a disease called "fire" on - you guessed it - tulip.
|Closeup of conidiophores and conidia of Botrytis cinerea,|
growing on cyathia (true flowers) of poinsettia. Black bar = 1mm.
|Pansy bed at NCSU in early 2012. Botrytis blight.|
|Light colored dead blotches on flowers, spreading to leaves,|
are a hint that you might have Botrytis blight in your pansies.
Just a reminder to check our holiday closing schedule. We look forward to seeing you in 2014!
Mike Munster and Kelly Ivors