Privet

Banana, Cucumber, Tomato, Olive oil, Olives

Privet is one of the most common privacy hedge plants used across Phoenix area landscaping, valued for its dense evergreen foliage, fast growth, and tolerance for shearing into clean geometric shapes. It is a fixture along property lines, around pool areas, and as a screening plant separating homes and commercial properties throughout the Valley. What many homeowners do not realize is that privet belongs to the same plant family as olive and ash, two of Arizona’s most significant allergens, and shares meaningful allergenic overlap with both.

Studies on the Oleaceae family have shown a seasonal succession pattern where ash flowers during winter, olive in spring, and privet at the beginning of summer, meaning the allergic reaction triggered by olive and ash during winter or spring can be aggravated by privet pollen during summer, promoting chronic symptoms in sensitized patients. This makes privet a key piece of understanding why some patients in Phoenix experience allergy symptoms that never fully resolve between the spring tree pollen surge and the summer grass and weed season.

Privet allergy manifests with symptoms such as sneezing, itchy or watery eyes, runny or stuffy nose, cough, and fatigue, which can become more severe during the plant’s pollination season from late spring through midsummer. Despite producing large, insect-dispersed pollen rather than the lighter, more far-traveling wind pollen of trees like olive or ash, privet has two recognized allergens including a profilin protein and an Ole e 1-like protein that is the marker allergen connecting it to the broader Oleaceae cross-reactivity pattern.

Privet hedges are everywhere in Phoenix landscaping, often planted in long uninterrupted rows that create a concentrated pollen source right at nose level for anyone walking, gardening, or relaxing nearby. Because the pollination window overlaps with the tail end of olive season and the start of grass season, privet symptoms are frequently misattributed to those more well known allergens.

If your allergy symptoms persist into early summer rather than resolving after the spring tree pollen season ends, privet could be a contributing factor, especially if you are already sensitized to olive or ash. The team at Carefree Allergy can confirm your specific triggers through targeted testing and build a treatment plan tailored to your needs. Options range from medication management to long-term immunotherapy to reduce your sensitivity to privet and the other Oleaceae allergens active across Phoenix throughout the year.