This slightly blurry photo, taken at dusk, shows a newly grazed, now resting area of pasture on the right, and a yet-ungrazed section on the left. We use these electric fence ribbons in much of our grazing management, allowing us to quickly graze, then rest, our pastures, allowing for maximum grass growth and pasture regeneration.

We only wanted the cows to graze the right hand portion, which they did over a two day period. This area is full of common tansy, a plant whose tea can cause abortions in humans.

However, it is also a natural cattle wormer, and high in calcium. Previous to this, the cows grazed sections of our hayfield (back portion of this photo), a mixture of grasses and clovers. Upon introduction to the “weedy” area here along the irrigation ditch, they consumed every tansy plant in sight.

Within several days, as they moved along the ditch, their tansy consumption was down to nearly nil. They had their fill, consumed the minerals and medicinals they needed, and passed back, free choice, to primarily grass consumption.