leaves on Pyracantha
of the leaves on my Pyracantha have turned brown and withered. What
is causing this and what can I do?
sounds like fireblight, which is common among pyracanthas and cotoneasters.
Infected plants can appear to have been scorched by a fire, hence
the name. Shoots may also die back, particularly flowering spurs,
and lesions can develop at their base. Once established, fireblight
can kill mature trees within six months.
If your plant is small,
dig it up and burn it, or put it in the rubbish bin. If your plant
is large, cut out the infected shoots, taking out the whole branch,
or cut at least 60 cm of healthy stem on either side. Spray with
a copper-based spray.
Fireblight also affects
apples, pears, hawthornes and Sorbus species.
by Dr Dan Blanchon from Unitec's Diploma in Sustainable Horticulture and Bachelor
of Resource Management.
with permission from NZOOM Home and Garden content,
from the previous
The views expressed here are not necessarily those of the RNZIH