guasca flowers galinsoga parviflora, a wide distributed invasive species

agriculture agronomist beautiful beauty bloom blooming blooms botanic botany bright closeup environment farmer field flower flowers foliage food galicia galinsoga gallant garden green growing growth guasca herb herbal invasive leaves lovely medicine mielcilla natural nature outdoor parviflora petals pharmacy plant pretty problem silvestre small soldier species summer unculitvated vegetal weed