Scientific name - Ageratum houstonianum Miller 1822
Synonyms - Ageratum mexicanum Sims
Popular names - agerato, Ageratum, sharp blue, blue billygoat, Celestina azul, floss flower, rods.
Distribution and Habitat - native from Mexico and Central America. In Europe it is cultivated as ornamental plants in the 1800.
Description - herbaceous perennial. Stem erect or decumbenta, 30-100 cm tall, slightly hairy or glabra. Leaves ovat-triangulation, 2-7 x 1.5-6 cm, top acute-obtuse, margins regular soirees, hairy on both sides, petiole 5-30 mm long, hairy. Blossom corymb compound, branched, hairy, global capital, 6-8 mm diameter, involucre with bractei linear-lanceolata, 5 mm long, slightly hairy. Flowers blue-violet. Fruit achenes, 2 mm long, black, or slightly glabra hairy, white doll with 5 wires.
Growth rate --
Tolerante - semi-shade and wind. Do not stand temperatures below 14-15 ° C, frost and drought.
Required - easy land, rich in humus, with a little perlite to ensure good drainage. Species heliofila (exhibitions prefer sunny).
Management - is abundant and regular watering, do not let dry land for too long timo. During the flowering season it is advisable to fertilize in 15-20 days. Past flowers are blooming away to ensure a rich and continuing.
Propagation - by seeds, it looks like in February (under glass) or April-May (off). Germinate after 5-7 days. Are planted at 15-25 cm distance between plants.
Diseases and pests - afidele and white fly. Botrytis attack plants if they are poorly ventilated places with shade and position.
Partners garden - Amtirrhinum majus 'Rocket White', Argyranthemum frutescens, Dianthus plumarius, Lantana camara, Nicotiana sylvestris, paper Rudbeckia, Tagetes tenuifolia.
Cultivars - 'Adriatic' 10-15 cm tall, flowers blue. 'Bavaria' 25-30 cm tall, flowers bicolore, white and blue. 'Blue Bouquet' 35-45 cm tall, purple flowers open. 'Blue Danube' 20-30 cm tall, purple flowers open. 'Neptune Blue' 15-20 cm tall, blue-violet flowers. 'Southern Cross' 30 "high, bicolore flowers, blue and white. 'White Ball' 24 "high, white flowers.
Properties and Uses - ornamental species, grown as annual for borders, cut flowers, pots. Attract butterflies.
The essential oil of Ageratum houstonianum is used in the production of natural fungicides used against Blastomyces, Epidermophyton floccosum, Fusarium lateritium, Histoplama capsulatum, Trichophyton mentagrophytes, Trichophyton tonsurans, Trichophyton verrucosum, Trichophyton violaceum.
Allan M. Armitage - Armitage's Garden Annuals - Timber Press, 2004
Carolyn Harstad, Jean lives - Got Shade? - Indiana University Press, 2003
Denise W. Adams - Restoring American Gardens - Timber Press, 2004
MK Rai, Donatella Mares - Plant derived Antimycotics - CRC Press, 2003
Suzanne McIntire & ndash, An American Cutting Garden - University of Virginia Press, 2005
Geranium argenteum - herbaceous perennial, grows in the Alps, the limestone rocks in central and northern Italy until SE France, from 1600-2100 m altitude. Rare species.
Anchusa italica Retz. - Ox tongue, large miruta
Anchusa italica species is a perennial or biennial, erect stem, up to 150 cm high, much branched, rarely simple, hispida. Originally from the Mediterranean.
Herbaceous annual or perennial. Strain decumbenta - upward, often is wood based. Leaves alternate, entire or pinnate-sectors. Capital solitary and axillary. Involucre with bractei placed on 2-3 lines. Flowers tubular, orange. Ligula sterile flowers, yellow-orange, top with 4 teeth. Receptacle convex or flat. Acorn obovoide, densely-hairy.
Hedychium coronarium - white ginger
Herbaceous perennial, 1-1.5 m inaltme, fleshy rhizome. Leaves alternate, decidue, language sessile 28-40 x 4.7 cm, narrow elliptic, apex long-acuminata, the acute glabra on top, the furry bottom steps. Flowering 4.10 x 3.6 cm. Bractei persistent ovat-triangulation, green, 4-7 x 2-4 cm, margins membranous.
Marrubium vulgare - Voronez
Perennial herbaceous plants, root fusiform. Right strain, wood and rigid, pubescent, 30-100 cm tall. Leaves petiolate, opposite, green-gray, pubescent on the underside, lamina ovata or suborbiculara, iregulat-edge gear, top round or obtuse, base subcordata, 2.5-5 cm long, 1-2 cm long stalks.
Lysimachia vulgaris - perennial species, herbaceous with underground rhizome widespread in temperate regions of Europe and Asia, grows in wet environments, wetlands, side channels and water courses, from 0 to 1200 m altitude.
Acacia anceps - evergreen shrub, 2-3 m tall. Originally from southern Australia, growing in limestone soils on coastal sand and red-brown sands.
Rosa gallia L.
Bush, 100-150 cm tall, robust system radically, lignificat produces underground runners. The stems are green, with red points. Leaves imparipenate; 3.7 Folio, oval or elliptical, or short stalks Sesi, evening edge, glabra upper surface and glossy, the lower part is lighter and has many glandular hairs
Digitalis purpurea - ornamental species, the size and elegant in almost any soil type and situation.
Digitalis purpurea digitalina contains a powerful drug used for heart disease. London was introduced in the 1650s in the pharmacopoeias.