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Oncidium spp.
Growing calendar
Typical timing for central Japan (Kanto region). Shift it for your own climate, and record your actual dates.
Guides
- Where to Put an Oncidium Orchid: Brighter Light Than a Moth Orchid
- How to Water an Oncidium Orchid: Soak It, Then Let It Dry Out
- Repotting and Dividing an Oncidium: Fresh Bark and Clumps of Three Bulbs
- Why an Oncidium Will Not Flower, and Where the Spike Comes From
- Oncidium Orchid Care Through the Year: A Growth Cycle Calendar
- Oncidium Orchid Problems: Scale, Mites, Black Leaf Tips and Rot
Common problems
Start from what you can see on the plant.
Pests and diseases (4)
Problems recorded for this plant, most serious first.
Late Blight
Disease
Dark green water-soaked lesions appear on the leaves and expand quickly into brown dead tissue. White mold forms on the underside and at the lesion edge, and dark brown lesions spread to stems and fruit.
Southern Blight
Disease
The stem rots at soil level and white silky mycelium spreads over the crown and the surrounding soil surface. Brown sclerotia the size of rapeseed then form and the plant wilts and dies rapidly.
Bacterial Soft Rot
Disease
The crown or the head becomes water-soaked and soft, then collapses into a slimy mush. The rotting tissue gives off a distinctive foul odor.
