Orchidées chez lavandula

Cloo a écrit:

Et au tirage, j'ai gagné un Dendrobium lindleyi x jenkinsii
https://www.youtube.com/watch?v=ZdGsseqbAik

Ce croisement s'appelle Dendrobium Ueang Phueng:
http://apps.rhs.org.uk/horticulturaldatabase/orchidregister/orchiddetails.asp?ID=95046

Une très belle plante.... mais qui demande un repos absolu en hiver! Même si on voit les cannes rabougries, il ne faut pas céder... ce que j'avais probablement fait quand j'avais mon jenkinsii, du coup je ne l'ai jamais vu en fleurs

Cloo a écrit:Voici ce que je lis sur Orchidwiz (donc, les fiches de culture de Baker, une référence):

Pour D. jenkinsii:
REST PERIOD: Winter days average 69-72F (20-22C), and nights average 45-49F (7-9C), with a diurnal range of 23-24F (13C). In the habitat, winter rainfall is low, but additional moisture is often available from heavy deposits of dew. For about a month in late winter or early spring, however, humidity is so low that even the moisture from dew is uncommon. Cultivated plants should be allowed to dry out between waterings in winter, but they should not remain completely dry for extended periods. Occasional early morning mistings between waterings, especially on warm, sunny days, may help prevent the plants from becoming too dry. Fertilizer should be eliminated until water is increased in spring. In the habitat, light is highest in winter. The cool, dry rest with increased light may be necessary to initiate blooming.

GROWING MEDIA: Plants are best mounted on wood, cork, or tree-fern slabs if humidity is high and plants are watered at least once daily in summer. When plants must be potted, any open, fast-draining medium may be used. Repotting is best done in early spring when new roots are growing.

Pour D. lindleyi:
REST PERIOD: Winter days average 76-82F (25-28C), and nights average 48-49F (9-10C), with a diurnal range of 27-33F (15-18C). Growers report that plants tolerate light frost, but extreme temperatures should be avoided in cultivation. Growers also indicate that D. lindleyi will still bloom with 60F (16C) winter nights if a dry rest is provided, but plants are healthiest if temperatures are closer to 50F (10C). The cool dry rest is needed to initiate blooms. Plants that do not receive a rest may produce keikis instead of flowers. In the habitat, rainfall averages are very low for 4-5 months in winter, but during the early part of the season the high relative humidity indicates that additional moisture is available from frequent fog, mist and heavy deposits of dew. Growers report that several months of winter drought is essential to promote flowering. Some even recommend eliminating water in winter; but plants are healthiest if, for most of the winter, they are allowed to become somewhat dry between waterings but do not remain dry for extended periods. For 1-2 months in late winter, however, conditions are clear, warm, and dry with humidity so low that even the moisture from morning dew is uncommon. Plants should be allowed to dry out completely between waterings and remain dry longer during this time. Occasional early morning mistings between waterings may help keep the plants from becoming too dry. Some growers recommend misting only enough to prevent severe pseudobulb shriveling. The pseudobulbs normally shrivel, however, so growers are cautioned to use care when using the amount of shriveling to indicate the need for additional water. The dry rest should be continued until new flower spikes are about 1 in. (2.5 cm) long. Fertilizer should be eliminated until heavier watering is resumed. Winter light should be as high as possible.

GROWING MEDIA: Mounting plants on bare wood or tree-fern slabs accommodates the rambling growth habit. Growers often place a pad of sphagnum moss between the mount and the plant. If plants are mounted, summer humidity must be high, and plants should be watered at least once a day in summer. If plants cannot be mounted, hanging pots or baskets may be filled with any open, rapidly draining medium. Containers should be barely large enough to hold the roots. Mounts or baskets reduce the risk of the slender new canes becoming kinked under their own weight. Repotting should be avoided as long as possible, but it must be done before the medium starts to break down. Plants should not be divided into clumps smaller than 3-4 growths. When necessary, repotting is best done immediately after blooming.


Ça rejoint pas mal ce que faisait Marty

lavandula a écrit:elles me font languir