blue lupins crop cultivars cultivated dense edge edged fodder foliage furry green greenery hairy legume legumes light lupins lupinus angustifolius narrow leaf nine-finger leave nitrogen nitrogenous plant pulse radiating road-side weed shadows stalk stalks symmetrical symmetry texture textures vegetation weed yellow centre appearance background clinging close-up cold color colors colour colours droplets drops fine leaves moist moisture rain raindrops reflection reflections reflective round rounded stems suspended water wet winter wintery blue flowers purple white