Most species have finely divided leaves (often aromatic) and clusters of daisylike flowerheads. Some have gray to nearly white foliage.Tanacetum parthenium
Native to southern Europe and the Caucasus. Compact, leafy, aggressive, spreading by volunteer seedlings; once favored in Victorian gardens. Plants are covered in small yellow, white, or yellow-centered white daisies in summer. Leaves have a strong peppery scent that some people find offensive. Varieties range from 1–3 ft. tall.
To propagate, divide the clumps in spring; or sow seeds in spring for bloom by midsummer.
Native to southern Europe and the Caucasus. Compact, leafy, aggressive, spreading by volunteer seedlin...
Native to Armenia, this rampant, thorny blackberry has naturalized in two dozen states from coast to c...
Often called waterlily tulip, T. kaufmanniana is a very early bloomer with 3-in., creamy yell...