'Yellow Lupine', also known as 'Annual Yellow Lupine' and 'European Yellow Lupine', is a native to the Mediterranean region of Southern Europe and commonly found growing on mild sandy and volcanic soils. As a wildflower, it is widespread throughout the coastal areas of the western part of the Iberian Peninsula, Morocco, Tunisia, and Algeria, on the islands of Corsica, Sardinia and Sicily, and in Southern Italy.
In other parts of the world where it was cultivated, it has become naturalized.
The plants grow to a height of up to thirty inches, a foot in diameter, have strong taproots, and densely hairy stalks. The leaves are compound and palmate with nine to eleven leaflets each. It flowers in whorls around a spike-like stalk, typically from June to July with its seed pods ripening from August to September.
'Yellow Lupine' requires sunny locations to thrive, prefers moist, well-drained soils, but as a nitrogen-fixing legume, it can tolerate nutritionally poor locations.
It is a nice choice to be grown as an ornamental annual flower, it is attractive to bees and other pollinating insects. Since it does fix nitrogen, it is used as a cover crop to improve the fertility of poor soil. On a larger scale, 'Yellow Lupine' is used in land reclamation work. Each packet contains 0.25 ounce, which is approximately 63 to 66 seeds.