ACT NOW TO PRE­VENT IN­VA­SIVE SPECIES

The Tribune (SLO) - - The Cambrian -

Right now, in the tall grass cov­er­ing Cam­bria’s many hills, prickly in­va­sive, non-na­tive this­tles are grow­ing.

The two worst kinds are the Ital­ian this­tle and the Cana­dian (or milk) this­tle.

A good ex­am­ple of out-of-control milk this­tle can be seen in the eu­ca­lyp­tus grove off Corn­wall in West Vil­lage. (This this­tle is not the va­ri­ety eaten by but­ter­flies.) Some this­tles are al­ready topped with their purple flow­ers that, when fer­til­ized by bees, will cre­ate seeds that will spread the con­ta­gion.

Now is the time to act. This this­tle can be killed by any broadleaf her­bi­cide or, if you are against her­bi­cides, wait un­til the flower has been fer­til­ized and closed and then weed whack it be­fore the seeds ma­ture. Not only are the this­tles of this plant nasty, but when fully grown (to 4 feet tall) and dead, they cre­ate a highly dan­ger­ous fire sit­u­a­tion. Each flower cre­ates thou­sands of seeds, and they spread rapidly with our on-shore winds.

None of us wants to in­fect our neigh­bors. Nancy Moure, Cam­bria

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