This tree isn't on fire — it's releasing pollen. Often called "mountain cedar," it's actually an Ashe juniper, one of many allergenic juniper species. Others include the Eastern red cedar, Pinchot's juniper and Western juniper.
Habitat: Usually semi-arid regions
Description: Small evergreen trees or shrubs with many stems. Most are dioecious, meaning only males produce pollen.
Allergenicity: Moderate to severe
Allergy season: Varies (e.g., winter for Ashe junipers; spring for Western junipers)
Tips: Avoid male junipers, especially near true cedars, since juniper and cedar pollen can cross-react. Also limit outdoor activity from 5 to 10 a.m. during juniper-allergy season, since that's typically prime time for pollen.