bromus tectorum, cerastium glutinosum, chaenorhinum minus, digitaria sanguinalis, erigeron canadensis, poa annua, senecio vulgaris, tripleurospermum inodorum, viola arvensis, draba verna, epilobium ciliatum, lactuca serriola, matricaria discoidea, medicago lupulina, polygonum aviculare, thlaspi arvense