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ADDITIONAL NOTES Alternate leaves Annual SCIENTIFIC NAME/FAMILY areas Asteraceae Asteraceae Compositae basal leaves blue flowers bracts bright bulbs color plate COMMON NAME corolla CULTIVARS CULTURE cut flowers dense DISEASES AND INSECTS double flowers early summer edging erect plant fern fertile flower color flower heads flower stems flowers are borne foliage fronds full sun germinate grass ground cover grow growth habit Hosta hybrid inflorescence Lamiaceae lanceolate Late spring late summer lavender leaflets Liliaceae lobes margins midsummer moist soil Native to Europe orange ovate panicles partial shade perennial border Perennial SCIENTIFIC NAME/FAMILY petals petiole pink flowers pinnately Poaceae powdery mildew PROPAGATION pubescent purple racemes red flowers RELATED SPECIES rhizomes rock garden root SEASON OF BLOOM Seeds germinate selection sepals serious problems sessile spikes spread spring or fall spring to early sun or partial tall and 12 usually UTILIZATION variegated violet well-drained soil white flowers wide winter yellow flowers