Look for plants that belong to Asteraceae family, if you wish to introduce tall, daisy-like flowers to a planting scheme. Asteraceae encompasses a wide variety of plants, including asters, cosmos, chrysanthemums, dahlias and sunflowers. Most Asteraceae form a central disk surrounded by a ring of ray florets. Members of Asteraceae grow as annuals or perennials and present a wide array of color options.
Annual fleabane (Erigeron annuus (L.) Pers.), also known as daisy fleabane or eastern daisy fleabane, blooms from June through September. The hairy stem grows up to 4 feet tall and bears 80 or more white to pink rays that radiate from a central yellow disk. The plant occurs naturally at roadsides and near cultivated fields, but it also grows well in the garden. Cultivate annual fleabane in a sunny location with fertile, well-drained soil. Use the plants as a specimen or for a border or cut flowers.
Baltonia (Boltonia asteroides (L.) L'Hér.) adds a daisy like-touch to gardens from July to October. The yellow dome-shaped disks and white, lilac, pink or blue flowers top 3- to 6-foot-tall stems. The perennial prefers sun and slightly acidic soil but adapts to wet, dry and clay soils. Baltonia propagates through seed and root division. Most tall varieties require staking, but the popular Snowbank variety remains self-supporting throughout the growing season.
Plant cup (Silphium perfoliatum) blooms up to 45 days in early summer. The central disk and protruding rays appear daisy-like, while the yellow and brown flower color and 4- to 10-foot stems resemble a sunflower. The sun-loving perennial prefers moist, loamy soil. It turns brown and drops leaves during periods of drought and may topple in high winds. The section of the plant where leaves attach to the stem forms a cup. The cup holds water and attracts birds and butterflies.
New England Aster
New England aster (Symphyotrichum novae-angliae) brightens fall gardens with showy, daisy-like flowers from August to October. The leafy branches grow up to 6 feet tall and bloom a profusion of purple rays from a central orange disk. Sow cold-stratified seed in the fall on a moist, partially-shaded site for best results. The Connecticut Botanical Society notes the perennial plant's lower leaves appear "tatty" by fall, so tuck it behind other low-growing vegetation.