Pollen corona / walnut (Juglans)

Season for walnut-tree pollen:: Mid of April to Mid of June

Sketch of a walnut pollen corona around the moon, artificially caused by shaking some branches.
Richard Löwenherz, Klettwitz, 09.05.98, in the evening

Description:

Walnut pollen coronae could, up to now, only be generated by shaking the branches of a walnut tree. The reason is the scarcity of walnut trees. In southern countries, this type of coronae should probably be more frequent and easier to observe.

Birch-tree (Betula) | Barley

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