Lambert KA, Katelaris C, Burton P, et al. - Researchers intended to determine if there is an association between exposure to multiple pollen types and lung function and markers of airway inflammation at 8 and 14 years of age and to explore potential modification by residential greenness. Spirometry and fractional exhaled nitric oxide (FeNO) were assessed at 8 and 14 years of age by a cohort of high‐risk children living in Sydney, Australia. They modelled the connection between six pollen types and lung function and FeNO, as well as evaluated modifying effects of residential greenness. Casuarina , cypress and Pinus pollen in the air the day before measurement and 3 days prior respectively, were linked to decreased lung function in 8‐year‐olds. The pollen exposures have been related to decreases in FEV₁ and FVC but did not affect the FEV₁/FVC ratio. Effect modification by greenness was not noted due to power loss. Airborne tree pollen of cypress, Casuarina and Pinus and not grass in some regions can be harmful to childhood lung function.