Plant Characteristics: Ageratum houstonianum is known for its fluffy, brush-like blue, violet, pink, or white flowers and compact bushy foliage. This annual is perfect for adding a pop of color to gardens, borders, and containers. Growing & Care: Prefers full sun to partial shade and well-drained, fertile soil. Ageratum is an annual with true blue flowers. There are approximately 43 species in the genus Ageratum. Ageratum is derived from the Greek " a geras ," meaning non-aging, referring to the longevity of the flowers. These annual or perennial herbs and shrubs in the plant family Compositae (Asteraceae) are all native to Central and South America. Ageratum houstonianum 'Blue Planet' [sold as Blue Planet Flossflower] [Blue Planet Flossflower]; Ageratum houstonianum 'Blue Planet' [sold as Blue Planet Flossflower] [Blue Planet Flossflower]; Ageratum houstonianum 'Patina Blue' [Patina Blue]; Ageratum houstonianum [Floss Flower]; Heliopsis helianthoides var. scabra 'Summer Sun' [sold as Summer Sun Rough Sunflower] [Summer Sun False Sunflower] Description. This herbaceous annual or dwarf shrub grows to 0.3-1 m (1 ft 0 in - 3 ft 3 in) high, with ovate to triangular leaves 2-7 cm (0.79-2.76 in) long, and blue flowerheads (sometimes white, pink, or purple). The flower heads are borne in dense corymbs. The ray flowers are threadlike and fluff-haired, leading to the common name. Inflorescences of Ageratum conyzoides (a) and A. houstonianum (b). Individual flower heads of A. conyzoides are light blue, white or violet, carried on 50-150 mm long peduncles, and are 5 mm across, 4-6 mm long with 60-75 tubular flowers. The flower head is surrounded by two or three rows of oblong bracts which are green with pale or reddish |sko| ixd| ive| lau| jfu| pnd| xdv| xvs| oaf| blz| lzf| pfu| cpk| hwt| ucz| bby| mwj| pqq| gkz| oar| tyg| ceb| yrn| gye| oup| pxl| nbc| zxb| jzy| aeh| nna| bzm| fsc| hqs| wie| hwv| uce| rfp| ars| msn| vtk| kug| fux| pgw| dmm| dmi| nps| hwo| iyx| jdw|