Pollen, grass pollen and cereal pollen

Synonym(s)

Cereal pollen

Definition
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In the present text grasses and cereals are listed whose pollen is of allergenic importance (see also tree pollen, see also cross-reaction).

General information
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Airport oats (Windhafer): The pollen very often causes allergies. Flight time: June to August. Size: 36-44 µm. Cross allergies are possible with all other grass pollen.
Barley: Low pollen count. Flowering time: July to September. Allergies are very rare. The pollen are 34-55 µm in size. Some grass pollen allergy sufferers also react to barley.
Glasswort: Allergies are rare in Germany, but frequent in Mediterranean countries. The pollen fly between June and September. Size: 12-17 µm. Possible cross-allergy to nettle pollen.
Oatmeal (also: false oat, meadow oat): Intensive pollen flight between June and July. Allergies are very common. The pollen size is 27-44 µm. There are cross allergies with all other grass pollen.
Oats: self-pollinator. No significant pollen flight. Flowering time: July and August. Cross-allergies exist against grass pollen.
Honey grass: Pollen is highly sensitizing. Flight time: June and July. Size: 25-34 µm. Allergens of honey grass pollen are the proteins Hol l 1 and l 5. Cross-allergies: to pollen of all other grasses.
Bermuda grass: pollen is highly sensitizing. Flight time: May to August. Size: 18-32 µm.
Meadow-grass: pollen is one of the most common allergens among grasses. Flowering time: May to August. Size of pollen: 23-42 µm. Allergens of the grass pollen are the proteins Dac g 1 to g 3 and g 5. Cross-allergies: to pollen of all other grasses.
Ryegrass: allergies to pollen of ryegrass are common. The pollen fly between May and July.
Maize: rare allergies. The pollen does not fly far. Maize flowers between July and September. Size of the pollen: 52-142 µm. Cross allergies with the pollen of all other grasses are possible.
Cockle: pollen is one of the most common grass allergens. The pollen fly from May to July. Pollen size: 20-26 µm. The main allergen is the protein Poa p1. Cross allergies occur with the pollen of all other grasses.
Rye: One of the most common and aggressive allergens. The pollen fly in May and June. Cross-allergies with all other grass pollen are possible.
Scented grass (golden grass, lavender grass): Allergies are very common. The pollen fly between April and June. Size: 23-39 µm. Cross allergies are possible with all other grass pollen.
Fescue: pollen very often causes allergic reactions. Flowering time: June and July. Size of pollen: 25-35 µm. Cross-allergies with the pollen of all other grasses are possible.
Ostrich grass: pollen often causes allergic reactions. Flight time: June and July. Size: 25-35 µm.
Wheat: Only low pollen count (wheat usually pollinates its own flowers). Allergies are very rare. Flowering time: July and August.
Timothy grass (Timothy grass, fire grass): Common allergies. The pollen fly between May and September: size: 30-45 µm. Allergens of timothy grass pollen are the proteins Phl p 1 to p 13. Cross-allergies with all other grass pollen are possible.