Hardy perennial flowers for September and October, in America

SEPTEMBER AND OCTOBER. 2. Achillea Ptarmica, pl. Double Milfoil; white. 2. Coreopsis grandiflora. Large yellow Coreopsis. 1. Aster linifolius. Fine-leaved Aster; white. 2. Eupatorium c�lestinum. Azure blue Eupatorium. 2. Phlox Wheeleriana. Wheeler's Phlox; red. 3. Aster macrophyllus. Broad-leaved Aster; white. 3. Eupatorium aromaticum. Fragrant Eupatorium; white. 3. Liatris elegans. Elegant Blazing Star; purple. 3. Liatris spicata and scariosa. Blue Blazing Stars. 1. Gentiana saponaria. Soapwort Gentian; blue. 3. Aster nov�-angli�. New England Aster; purple. 3. Echinops retro. Globe Thistle. 3. Chrysanthemum indicum. Artemisias, many sorts and colors.