The time of year you experience symptoms will depend on the type of allergy you suffer from. Hay fever sufferers will most likely experience symptoms in spring and early summer as trees pollinate between March and May and grass and flowers follow in May and June. Other allergy sufferers such as those who have a pet allergy can suffer all year round.
The calendar shows the general situation in the UK. The exact timing and severity of pollen seasons will differ from year to year depending on the weather and also regionally depending on geographical location.
Try to avoid cutting the grass or ask a non-hay fever sufferer to do it instead, as grass pollen can trigger hay fever.
Information supplied by the National Pollen and Aerobiology Research Unit. University of Worcester.