The Life Cycle of the Broccoli Plant

Written by kimberly sharpe Google
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The Life Cycle of the Broccoli Plant
Harvest broccoli before the flower heads open. (Jupiterimages/Goodshoot/Getty Images)

A cool-season annual vegetable, broccoli grows well from seeds or transplants. Broccoli seeds grow and the plants reach maturity 11 to 15 weeks after planting, and transplants mature in 8 to 12 weeks after planting.

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Growth Time Frame

Broccoli transplants and seeds offer gardeners the chance to plant two to three weeks before the last expected spring frost because the broccoli plant grows best in cool weather. A second crop of broccoli thrives in the fall months and can be started three weeks before the first anticipated fall frost.

Best Growth

Broccoli grows and produces an ample crop when the weather does not exceed 23.9 degrees Celsius. It can withstand low temperatures to 0-2.222 degrees C. before it suffers damage and ceases growing. A heavy drinker, broccoli requires 1 to 2 inches of water per week to grow well.

Harvest Considerations

Broccoli must be harvested before the flower heads of the plant open and seeds form. Cut the heads when they are still compact. After harvesting the first heads, continue to water and fertilise the plant to encourage it to grow side shoots for further harvest before the end of the plant's life cycle.

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