Penstemon digitalis "finger": the flowers resemble fingers of a glove. The plant grows in moist, sandy soil in full sun in meadows, prairies, fields, wood margins, open woods and along railroad tracks. Its bloom period is from late spring to early summer. The plant is known to attract, butterflies, and birds such as hummingbirds. It tolerates deer browsing. Native states for "P. digitalis" include Iowa, Nebraska, and Missouri although it is less common in Iowan native prairies compared to other "Penstemon" species. The genus "Penstemon" is the largest in North America with 270 species. However, genome size was relatively unknown for the
Plant as rayon and acetate derived from plant cellulose. Thread used to sew cloth likewise comes in large part from cotton. Thousands of plant species are cultivated for aesthetic purposes as well as to provide shade, modify temperatures, reduce wind, abate noise, provide privacy, and prevent soil erosion. Plants are the basis of a multibillion-dollar per year tourism industry, which includes travel to historic gardens, national parks, rainforests, forests with colorful autumn leaves, and festivals such as Japan's and America's cherry blossom festivals. While some gardens are planted with food crops, many are planted for aesthetic, ornamental, or conservation purposes. Arboretums