Anthurium Diseases
Root Rot
Anthurium root rot is common with anthuriums planted
in beds as well as in containers. Numerous fungi are recovered
from dead and dying roots including; Pythium, Calonectria,
Crotalariae, Rhizoctonia, Phytophthora, Pyhtium
and Fusarium. None of these fungi, in the absence of
one or more external factors, has been shown to be a primary
cause of root rot.
Symptoms of root rot include reduced plant height,
smaller leaves and flowers, lack of leaf and flower sheen,
and a general lack of vigor. In severe cases, all the roots,
except for a few aerial roots that have not yet begun growth
into the medium, may be rotted. Roots often have a strong
odor of decay as a result of secondary invasion by bacteria.
Plants are prone
to root rot if drainage is poor. Common causes of poor drainage
are: old decomposted media, media that retain excessive moisture,
shallow depth of media over a solid substrate and failure
to shake off old medium from roots of containerized plants
when transplanting into a different medium.
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