Glossary

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A compound that, when added to a spray solution, causes the spray to spread over and wet surfaces more thoroughly.

A plant that starts from seed in the fall, lives over winter, and completes its growth, including seed production, the following season. (Examples: vetch and chickweed.) Many plants commonly known as annuals can also be classified as winter annuals, depending on time of germination, etc. (See also Annual.)

Plants that develop woody tissue.