Native to the European Alps, Dutch crocus emerges in March-April from an underground tuber called a corm. It grows 4–5 inches tall. The violet cup-like purple flowers of 'Remembrance' open in the morning and close up at night, lasting three weeks. The grassy foliage with narrow silver bands turns yellow as the plants go dormant. Use in beds or borders or naturalize in lawns to introduce spring to the garden. Watch out for squirrels and rodents whose radar is especially adapted to finding and devouring the corms. This variety was introduced in the early 1900's and if not eaten or dug up can last for decades.