In addition to the seeds being spread by the prickly burs, the plant also spreads by stolons that grow underground - this can make it hard to remove completely. Pirri-pirri causes artificial dune stabilisation, competes with native sand dune species, invades the botanically rich areas of the dunes in dry seasons, and burs can get tangled in fledgling bird's feathers preventing them from flying.
John one of the volunteers helping us to remove the burs from the sides of a path to help prevent spread. |
The burr acts like velcro and sticks to clothing and dog fur. |
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