melilotus officinalis, melilotus albus, ambrosia artemisiifolia, artemisia absinthium, berteroa incana, capsella bursa-pastoris, elymus repens, euphorbia seguieriana, poa angustifolia, achillea millefolium, bromus tectorum, cirsium arvense, convolvulus arvensis, echium vulgare, erigeron canadensis, medicago falcata, verbascum phoeniceum, erigeron acris, plantago major, tanacetum vulgare