Holm oak allergy (Quercus ilex) is a typical seasonal reaction to pollen released during flowering. A Mediterranean oak, an allergen along the coast and in Dalmatia. Symptoms of Holm oak allergy include sneezing, watery eyes, a runny nose and a feeling of fatigue during the peak of the season.
Holm oak allergy symptoms
Typical symptoms of Holm oak allergy are sneezing, a runny nose, itchy and watery eyes, a blocked nose and a scratchy throat. People with asthma may also experience breathing difficulties during the peak of the season.
Flowering season
Holm oak flowers from March to May, peaking in April. The actual length of the season depends on weather conditions and region.
View the full pollen calendar 2026Regions in Croatia
Holm oak can be found in various regions of Croatia. Track the pollen concentration for your region on the pollen map.
View the Holm oak pollen mapHow to protect yourself
During the Holm oak allergy season: close your windows in the morning hours, avoid spending time outdoors at the peak of the season, use a HEPA filter and shower after coming home. Antihistamines and nasal sprays help control symptoms - consult an allergist about treatment.
When to see a doctor?
If symptoms of Holm oak allergy significantly affect your daily life, last longer than two seasons, or cause breathing difficulties, see an allergist. Allergy testing and immunotherapy can reduce sensitivity over the long term.
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