Flowers begin in May and slack off with really hot weather; however, it remains a drought tolerant plant. Can handle hot temperatures with little water. Seems to thrive and live longer in average soil as long as it is well drained which is why a slope is a plus.
It is winter hardy to USDA Zones 3-9. Many of the new cultivars will bloom the first year from wild flower seed when the seed is started early enough. In optimum growing conditions it will re-seed each year and remain in the xeriscape garden for many years as if it...
