Plants with Pollen That Cause Hay Fever in Australia
When am I likely to get hay fever (seasonal allergic rhinitis) from pollen in Australia?
Pollen seasons can cause hay fever & asthma almost year round in parts of Australia. Exposure to pollen is very difficult to avoid outside the house throughout a lot of the warmer parts of the year.
Grasses (particularly improved pasture grasses) that were introduced for livestock disperse vast amounts of airborne pollen, as do weeds. Not a lot of people know that troublesome non-native plants are usually more of a problem child than the natives; their pollen is more allergenic.
Grasses start pollinating in Spring into Summer; trees pollinate in the last part of Winter through to early Spring and some weeds pollinate from August through to May.
Atmospheric pollen loads are worse inland, because there are few barriers to wind borne dispersal.
I’ve compiled a table that lists some of the most allergenic plants in Australia, in terms of airborne pollen. The table is not complete and will be added to as more allergenic Australian plants come to my attention. Please feel free to add any plants that you’re aware of in the comments section and I’ll add them to the table.
Hay Fever: Pollen in Australia - When & Where.
|Plant Name||Distribution||Pollen Season||Plant Image|
|White Cypress Pine|
(Callitris glaucophylla &
|NSW (Northwest), QLD (Southwest) |
Minor Occurrence: WA, NT, VIC, SA
|Late July - August.|
|NSW, QLD, NT, VIC||Oct-Dec|
|Couch (Bermuda Grass)|
|Australia-wide, particularly coastal & sub-coastal regions.||Dec-March|
|ACT, NSW, QLD, SA, VIC & WA||Nov-Jun|
Summer to Autumn in Western NSW.
Nov-May in SA.
Nov-Jun in Perth & WA.
|ACT, NSW, QLD, SA, VIC, WA||NSW - Spring to early Summer.|
SA - Oct-Mar
WA - Spring & Summer.
Perth - Sep-Nov
|Asthma Plant (Pellitory)|
|Likes urban areas (disturbed earth). Eastern NSW, Southern VIC, Southwestern WA & Southern SA||Spring to late Summer, can be all year in warm areas.|
|Asthma Plant (There are more than one) |
|Most common in tropical & sub-tropical regions. Northern WA, NT, QLD & North Eastern NSW.||Year round.|