Cypress trees
Cypress trees were introduced from Europe. The African species is Widdringtonia from the Cedarberg area. These evergreen trees produce woody cones and release their allergenic pollen from June.
No action required. Pollen levels pose no risk to allergy sufferers.
< 20% of pollen allergy sufferers will experience symptoms. Known seasonal allergy sufferers should commence preventative therapies e.g. nasal steroid sprays.
> 50% of pollen allergy sufferers will experience symptoms. Need for increased use of acute treatments e.g. non-sedating antihistamines.
> 90% of pollen allergy sufferers will experience symptoms. Very allergic patients and asthmatics should limit outdoor activities and keep indoor areas free from wind exposure. Check section on pollen and day-to-day weather changes for planning activities.
These levels are potentially very dangerous for pollen allergy sufferers, especially asthmatics. Outdoor activities should be avoided.
There is currently no data available for this period.
Cypress trees were introduced from Europe. The African species is Widdringtonia from the Cedarberg area. These evergreen trees produce woody cones and release their allergenic pollen from June.
