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Examples of flowers with ballistic seeds include sweet peas, lupines, milkweed, California poppies, impatiens and Wisteria. Wisteria, a vine with fragrant purple or white flowers, produces pods that resemble peas. After they have matured and dried and the weather is hot and dry, the pods explode, sending seeds up to 70 feet away from the parent plant. It is the drying of the pod that supplies the force for the ejection of the seeds; the seeds themselves do not explode. As a pod dries, tension builds in the tissue of the pod walls, causing it to split suddenly, which hurls the seeds away, sometimes with an audible popping sound.

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10y ago

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