Notes on Saskatoon Berry Diseases
Saskatoon-juniper rust
Identification
Early symptoms include yellowish spots and swellings on leaves and fruit.
Older infections develop spiky outgrowths. On juniper, the fungus appears
as woody round galls. Jelly like horns grow out of these galls in the
spring.
Saskatoon-juniper rust gall
Period of activity
In spring, after a rain, juniper galls produce spores that can spread
to saskatoons up to 2 km away. The disease is favoured by cool wet spring
weather.
Management Notes
- Prune out rust galls or remove entire juniper plants in the immediate
vicinity of the orchard to reduce disease pressure.
- See Saskatoon Berry Calendar.
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