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Do you know the difference between an annual, biennial and perennial plant? If not, here's everything you need to know.

Plants are classified by the number of growing seasons it takes to complete their life cycles. Plants are classified as annuals, perennials or biennials.

Biennial plants take twice as long to complete a full life cycle as annual plants. These plants require a dormant period induced by cold temperatures between vegetative growth and flowering.

So, grab some gardening gloves, a trowel and a rake and follow these simple steps to get these flowers blooming for summers to come. As mentioned, you can plant your Sweet William seeds in the ground ...