Why do some species have a phenophase for Pollen release and others do not?
While you should be able to see pollen release from almost all plant species when the mature male or bisexual flowers are shaken or blown, at this time we have only included this phenophase for species that are considered moderate or severe allergens. ‘Pollen release’ should be reported only if you can actually see pollen dust upon blowing or shaking a flower or pollen cone. Do not try to observe this phenophase if you can not get close enough to a flower or pollen cone to blow or shake it to see if pollen falls into your hand.
While you should be able to see pollen release from almost all plant species when the mature male or bisexual flowers are shaken or blown, at this time we have only included this phenophase for species that are considered moderate or severe allergens. ‘Pollen release’ should be reported only if you can actually see pollen dust upon blowing or shaking a flower or pollen cone.
