First flowering

Record hazel first flowering when the male catkins have expanded and are releasing their pollen. You may notice this on a breezy day or by lightly tapping a branch with you finger.

If you have recorded hazel events before, continue to record on the same shrub.

Expected Date Range: early January to mid-March 

Available historic data: we have individual records from 1872-1902 and good records from 1923-1999