Biennial a plant that produces seed during

Biennial a plant that produces seed during

Biennial a plant that produces seed during

Biennial: a plant that produces seed during the second year of its existence and then dies.

Blight: a diseased condition in plants in which the whole or a part of a plant withers or dries up.

Bluestone: a chemical; copper sulphate. It is used to kill fungi, etc.

Bordeaux Mixture: a mixture invented in Bordeaux, France, to destroy disease-producing fungi.