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
Pedicularis rostrata-capitata - grows on alpine and subalpine meadows, cave sites, 1800-2400 m altitude.
Pedicularis rostrata-capital belongs to the family Orobanchaceae, which contain parasites or semiparazite, with or without chlorophyll, leaf bracteiforme.
Cosmos sulphureus - used as an ornamental species for borders or groups, in association with Asclepias curassavica, Coreopsis tinctoria, Oenothera fruticosa, Rudbeckia hirta, Salvia farinacea, Solidago canadensis, Tagetes erecta.
Asclepias fruticosa - shrub native from South Africa, introduced in the Mediterranean for textiles.
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.
Herbaceous plants, roots rizomatoase, 2-4 mm in diameter. Stem erect, tube or fistiloase, foam, and longitudinally striated. Leaves basal, long petiolate (5-20 cm); language cordata, margine crenata, wavy carnoas, top obtuse, bright green. Caulinare Leaves are similar to those that are based only smaller sessile or subsesile.
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
Dictamnus albus L.
Dictamnus albus L. - Species native to southern Europe to northern China, perennial to 1 m, stem node, erect, leafy coriacee, compound, alternate, 9-11 lobes, ovata, parties, 7.5 cm long; iregulate flowers, white-pink, 2.5 cm long, 5 SEPA and 5 petals, 10 stamens, terminal raceme, fruit capsule with 5 lobes.