I purchased this Dendrobium Victoria-Reginae x sib from Napa Valley Orchids at Orchids in the Park in San Francisco. I discovered this plant about 5 minutes after I had entered the show, and was really impressed by it. It was one of the larger Victoria-Reginae I had ever seen, and had several buds, and a new growth. Just perfect. The price seemed also very low for the quality and size of the plant. I walked away to continue my first pass through the show, and then came back and made this my first purchase.
Later when retrieving my plants from the “Plant Hotel”, one of the women behind the desk commented on this plant, and how wonderful it was. When she found that I paid $50, she thought it was a very low price, and asked me to lead her to the vendor. I later found out that she immediately purchased the other Victoria-Reginae that Napa Valley was offering.
The plant has many buds, so it should start to bloom soon.
So I made a good purchase! Let’s hope it does well.
The culture sheet at Akatsuka Orchids says [emphasis is mine]:
Dendrobium Victoria-Reginae is a species native to the highland areas of the Philippines. Beautiful violet-blue flowers emerge from the sides of the pendulous pseudobulbs. They are long-lasting and the plant can often flower more than once per year. These are small plants with narrow canes at the base. The growths should be staked up when grown on a bench or hung with a single wire hanger allowing the canes to hang down. This plant rarely grows more than 10 inches in height.
Temperature and Humidity: This plant prefers temperatures of 55-62 degrees at night and days of 68-75 degrees. Humidity of 50% or higher is ideal. The use of humidity trays or room humidifiers is beneficial.
Light: Medium light is best, from 1500-3500 foot-candles. More light is acceptable in winter with slightly shadier conditions in the spring and summer. This plant will do well under artificial light and in light that is given for the Cattleya variety.
Watering: It is best to use rainwater, distilled or reverse osmosis water. Municipal water with a pH of 7.5 or lower can be used. This plant likes an abundance of water during the growing season from spring through fall. During the winter months after the growths have matured and hardened; allow the plant to become drier at the roots between watering. Watering every 2-3 weeks in the winter may be sufficient. It is acceptable for the canes to shrivel slightly. If they continue to shrivel, however, increase the frequency of watering. Overwatering can cause severe problems such a root rot and promote infectious growth in the potting medium.
Re-potting: This plant has a pendulous growth habit in nature. The best time for repotting or mounting is in the spring just after flowering. New Zealand sphagnum moss or a small bark mix is best for potting.
Flowering: The heaviest production of flowers occurs in the spring months. The growth that matured over the summer will start pushing out flower buds between the leaf axils of the plant causing the foliage to turn yellow and fall off. This is normal. When you see these buds forming, keep the plant more evenly moist. New growths should follow flowering. The flower size is between 1 ½ to 2 inches. The colors vary slightly but for the most part are deep violet blue. Temperature and light can influence color as well. When the light is bright and the temperature is cooler, darker blue flowers will result.
So intermediate-to-cool temperatures, and oncidium light. It seems that no winter’s rest is necessary. Should do well here.