Botrytis blight on rose flowers. |Severity:||1.5 out of 5|
|Frequency:||5 out of 5| |Symptoms:||Botrytis often lives on
dead plant material and from there, spread into weakened living
plant material. It can also infect through wounds or healthy
tissue without going though dead or dying tissue. This fungus
disease can cause twig blights on stems, buds, flowers, fruit
and leaves; can be confused with other diseases that cause
similar damage. It can cause gummosis, fruit rot and damping
off. When humidity is high a thin to thick web of mycelium
develops on diseased tissue. This mycelium is grayish in color,
hence the name gray mold. Symptoms may vary depending on the
plants attacked, plant parts attacked, and growing conditions.
Botrytis is sometimes confused with old age and thrips damage.
To help separate browning on petals caused by old age versus
botrytis, check the petals closely. Browning from old age should
occur on the outer petals first and along the edges or at the
tip of the petals. When inner petals