Coreopsis grandiflora
Tickseed is a cheerful perennial that floods the garden with bright yellow daisy-like flowers from June to September. The plant grows compactly and is particularly suited to dry, sunny borders. Butterflies and bees happily visit the blooms.
Plant in full sun in light, well-drained soil. The plant is drought-tolerant and needs little water. Avoid overly rich or wet soil as this makes the plant floppy. Apply a light layer of compost in spring.
Deadhead regularly to prolong flowering. Cut the plant back to just above ground level in autumn. Divide every two to three years to prevent exhaustion.
Echinacea purpurea
Purple Coneflower is a sturdy perennial with distinctive pink-purple petals surrounding an orange-brown cone. The flowers appear from July to September and are a magnet for butterflies and bees. In autumn and winter, the seed heads attract goldfinches and other seed-eating birds.
Rudbeckia fulgida
Black-eyed Susan blooms from July through October with radiant golden-yellow petals surrounding a dark brown center. The plant is virtually indestructible, spreads gradually, and suits large borders and prairie-style gardens. After flowering, the seed heads provide food for birds.
Salvia nemorosa
Woodland Sage is a compact perennial with striking purple-blue flower spikes blooming from June to August. It attracts plenty of bees and butterflies and works well in sunny borders. Cutting back spent flower stems often triggers a second flush of blooms.