Several species are found in cultivation, including
Primula latiloba (
Dodecatheon dentatum),
Primula hendersonii (
Dodecathon hendersonii) and
Primula meadia (
Dodecathon meadia). Species of
Primula sect.
Dodecathon need good drainage and often dry soils in summer and winter when plants are dormant, in the spring plants like moist soils for best growth. Plants grown in dry soils tend to be smaller and lower growing. Since plants typically go summer dormant, seed raised plants need three or more years of growth before they are large enough to bloom. For some species, if given frequent light fertilization and kept moist, dormancy can be delayed resulting in larger plants after germination and the interval between germination and flowering decreased by a year or two. Another technique to shorten the interval between seed germination and flowering is to place the plants in a cooler after dormancy has set in, in late spring, and after a number of weeks move the plants to a shadehouse in midsummer where new growth will start. The flowers produce seeds via
buzz pollination. They can be propagated by division in winter. Several varieties of the
Pacific Northwest are edible. ==References==