Prince Albert, Saskatchewan

Alder season can start from late March to mid-Apri and end mid to late June. The counts vary mostly from low to moderate with the occasional high. The alder season is highly sensitive to weather conditions. The highest counts occur from april to mid-June. They are usually considered important allergens.

This group of weeds are similar microscopically and are not differentiated. They include some weeds which are considered allergenic. Low and moderate counts are observed from mid-June to late September.

Ash pollen season can start from late April to mid-May and end late May to early June. Some years very high counts are observed but the season varies from year to yearin timing, season length and pollen levels. This is partially due to weather. Considered to be allergenic only in highly sensitized individuals.

Birch season can vary by as much as a month which is due to the effect of weather. The start of the season can occur from late April to mid-May and the end can occur from late May to late June. The counts can get in the high range.

Cedars, junipers and yews produce significant counts, mostly in the moderate range, with a few high counts. The season can start late March to mid-April and end late May to mid-June. Some high counts are observed. There is great fluctuation in the season due to the effect of weather. Probably of no significance in causing allergic reactions.

Elm are important allergens. The season can start from early April to early May and end late April to late May. There is a large fluctuation from year to year for the season length, timing of the season and the amount of pollen produced. This is partially due to the effect of weather.

Grasses produce significant counts, usually in the low and moderate ranges with the occasional high counts in June and July. The main season can start from mid to late May and end early to mid-October.

Hazelnuts produce low and moderate counts. The season can start from the second week of April to the second week of May and end mid to late May. The counts can be in the low to moderate range. May cause allergic reactions in individuals who are highly sensitized.

Maple season varies greatly which is mostly due to the effect of weather. Not only does the season start and end vary but the amount of pollen produced as well as the season length. The season can start from late April to mid-May and end mid to the end of May. Most years the counts are low and moderate. Occasionally a high count is observed.

Mugwort season is from mid-July to mid-October with low and moderate counts observed. Certain species are considered highly allergenic.

The mustard and cabbage family are responsible for contact dermatitis and food allergies. They are not considered important in airborne allergies since they are mostly insect pollinated but a significant amount of pollen is observed in our samples at this location. The season can start around late June and lasts until mid-September. Mostly low, with the occasional moderate, counts are observed.

Poplar, cottonwood and aspen season can start from early April to the end of April and end from early to late May. Some of the counts are very high and may cause allergic reactions.

Ragweed season is from late July to early October with only low counts observed.

Sagebrush season is from mid-July to mid-October with low and moderate counts observed. Certain species are considered highly allergenic.

Willows pollen season can start from mid-April to early May and end early to late June. There is a great variation in the season from year to year not only in when the season occurs but the amount of pollen produced. Some years very high counts are observed. Considered to cause allergic reactions in individuals who are sensitized.