These are southeast of St. Walberg, southeast of Big River, and north of Humboldt. The concern for other farmers is that it could spread. Stork's Bill has a flexible life cycle that is particularly adapted to reduced tillage grain production systems. It can survive as an annual, winter annual, or biennial. It can only reproduce from seed but there can be several flushes per season.
Emergence is optimal in moist soil so rainfall tends to bring on another flush.
Individual plants can produce 200 - 600 seeds which do not have any dormancy unless placed deep in the soil. Once established the plants are drought tolerant so in dry years they can take over knolls and significantly reduce yields. One of Stork's Bills competitive advantages is that it can emerge and thrive under low soil and air temperatures. This adaptation along with the winter annual form means that it can be quite advanced when other weeds are at the burn down stage. The seed also has a burial mechanism that gives it an advantage in reduced till systems because it can wiggle through residue layers.