Robinson's Red sports scarlet-red flowers which measure 2.5 inches wide and are daisy-like with a bright yellow center. Tanacetum also has interesting ferny foliage much like that of yarrow. Plant it in large groupings for plenty of cut flowers and for greatest impact in the landscape. Tanacetum should be grown in full sun and well-drained soil. Removing faded flowers will prolong the bloom time. Trimming the foliage back after blooming will help to rejuvenate the plant. It should be divided in the spring or in the fall every 2 years to maintain vigor.