Orchid Q&A

* Air Conditioning
* Ansellia africana
* Aquarium Water
* Brassavola Care
* Brassavola Little Stars
* Black Growths
* Brassavola Care
* Calanthe Culture
* Catts in Hawaii
* Change of Environment
* Coconut Husk
* Cymbidiella rhodocheila
* Cymbidium Care
* Cymbidium Foliage
* Culture of Alba Orchids
* Dehydration
* Dendrobium Care
* Dendrobium Repotting
* Dendrochilum magnum
* Dormancy
* Dry Conditions
* Encyclia lancifolia
* Epsom Salts
* Eulophia species
* Fertilizer Injector Dosage
* Flowering Vanilla
* Habenaria rhodocheila
* Holcoglossum kimballiana
* Inobulbum munificum
* Jewel Orchids
* Judging Orchids
* Leaf Color
* Leaf Residue
Leaftip Burn
* Liparis viridiflora


This year all my Catasetum Alliance and calanthes went from leaf drop to new growth without going dormant. Could this have anything to do with this year's weather here in the Bay area? — Patrick T. Duffy



Yes, indeed, it could have been unusual weather patterns. Especially if cool and foggy conditions prevented proper maturation of growth until very late in the season, the plants may simply begin growing again. The solution to this for plants that require a dormant period to initiate flowering is to begin to withhold water and fertilizer in late autumn, whether or not you feel the growth has reached full growth. This will slow down the plant and initiate dormancy. This is also important with many dendrobiums from monsoonal climates. — Ned Nash

In nature dormancy in deciduous orchids
such as Catsetum saccatum is triggered
by a distinct dry season —
photo © 2009 Greg Allikas

Orchid Q&A

* Masdevallia coccinea
* Mastering Miltonias
* Maxillaria sophronitis
* Mealybug Infestation
* Meristemming Monopodials
* Missing Pollen
* Night Length
* Night Lights
* No Flowers
* Non-flowering Doritaenopsis
* Oncostele Wildcat
* Oncidium Sharry Baby
* Orchid Honeydew
* Paphinia herrerae
* Paphiopedilum armeniacum
* Paphiopedilum delenatii
Phaius Culture
* Phalaenopsis Problem
Phalaenopsis Spiking
* Plant Sitter
* Psychopsis papilio
* Rainwater Collection
* Redwood Bark
* Re-rooting Plants
* Spotted Oncidum Leaves
Sticking Flowers
* Storing Pollen
The Larger the Better
* Vanda Keiki
* Virus Question
* Volck Oil Spray