Answer: Brooms are on the noxious weed lists of most counties along the west coast. While the invasive brooms are not necessarily the ones gardeners choose for their landscapes, botanically speaking, brooms are brooms. There has been an attempt to control the spread of invasive brooms by introducing an insect called the twig mining moth (Leucoptera spartifoliella). These fellas (and their caterpillar youngsters) love to feed on brooms of all kinds. Before you make further attempts to kill off the critters, why not take a specimen to your local cooperative extension office for identification? (Phone 619-694-2845) If it's the biocontrol insect, the extension office would like to document it. If not, they can recommend control measures for them. Good luck with your brooms!
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