When beech-nuts are plenty, expect a mild winter.
Beans.
Be it weal or be it woe,
Beans must blow ere May doth go.
Convolvulus.
The convolvulus folds up its petals at the approach of rain.
Cherries.
As long as the cherries bloom in April it is said that the grape-vine will be in bloom.
Chickweed.
The flowers of the chickweed contract before rain.