Dendrobium anosum

[1kathleen]

Have large dendrobium anosum that now has large buds on 3 long hanging canes - I got it on e-bay about 9 months ago and kept it cool and dry for 3 months. I can't find any information on when to start watering..Now??after it blooms??Thanks so much.

[cb977]

Hi Kathleen...I've read that all Den anosum needs to spend some time in Florida to achieve perfection

This is the second time in as many days that this plant has come to my attention...maybe I'll find one at the Tampa sale this weekend

Seriously, from what I've learned, most of the winter resting dens like a rest from Nov-Mar. With the crazy warm weather we had here recently, some of mine are coming out of their rest period a little earlier. I'm easing them back into their normal regimen now.

Let's see what some of our other members have to say...maybe I'm wrong

[Ross]

Mine are in bud right now. This is normal for this spp. after a winter rest with NO water. I withhold all water from halloween till Feb 1 and get blossoms regularly. Start dunking the plants for several minutes till they quit putting up bubbles. Do this daily from hear on till fall.

[Orchonubee]

The Baker's, Orchid Species Culture book, says to increase water in late winter, after the flower buds develop. Mine are still sleeping and are quite dry. I mist them occasionally in winter, and they usually reward me in early spring.

[1kathleen]

Thank you - these buds are quite large - you can see stems now - can't wait to see it bloom - have another question though about another dendrobium farmeri - got also on e-bay - won it in Sept. .it arrived (from Malaysia) on December 17th ( went by freight boat) it was totally dry and had lost all leaves but the 7 pseudobulbs that are four sided are green - I have been dipping once a day and keeping 62 or higher temp. Looks like the roots(its mounted on bark) are coming to life but it has no leaves . Do you think it will recover??..thanks..k

[Ross]

Originally Posted by Orchonubee

The Baker's, Orchid Species Culture book, says to increase water in late winter, after the flower buds develop. Mine are still sleeping and are quite dry. I mist them occasionally in winter, and they usually reward me in early spring.

After many years of growing and flowering these plants I would add, though, that if the flower buds fail to develop by February, they aren't coming that year. For instance, I have three right now and all three started developing the new green shoots. Only two have buds. I wait till the buds get at least 1/4" before watering and it is always the same each year - Feb 1 (for me). Mine get NO water or misting over winter - natta. When I see the buds, that's great, but I start checking for new shoots on Feb 1 and once growth starts you really must start full watering regime or you chance damaging the growths.

[4page]

I bought one last month, and was told not to water it. I put it in the garage with north window. It is kind of cold here in the garage, may go down to 50. The leaves are yellowish now. I would not worry about them since I know that they will be gone normally, but the cane is also kind of yellow too. Was it too cold?

[Ross]

I think that might be a bit cold, but not sure. Mine sit at 62F at night and 74-75F day temps but are right in a south window. I don't think it's the temps that cause the leaves to fall, but the drought. It's a normal response to the dry season in Southeast Asia where they are native.

[Gin]

Mine are on a cool insulated porch .
This is what happned last year , it was suppose to get very cold ,and it did .
I moved mine into the greenhouse was not sure if the heater would keep the porch from freezing they were in the greenhouse for a few days until the extra cold was gone , at that time they still had most of thier leaves , they budded up and bloomed but not well .
They went back to the cool porch dropped more leaves and bloomed again in the spring but again not well . The blooming seemed to be triggered by the cool Temps. on the porch then the warm Temps. in the greenhouse they were dry .
This year the leaves are gone seeing just the start of buds the porch goes to 50 easy .I think yours will be fine . Gin

[Ross]

Gin, I REALLY am sure temps are NOT the trigger. I have spent time in Viet Nam (one of the areas these orchids grow naturally) and cold temps are not the norm - cool, yes, but not cold) I am pretty-well convinced it's the dry spel and then the increasing daylight length they respond to. I am willing to put up a culture sheet to this effect. That's how sure I am. I've gone periods ignoring this advice with no blooms. Now I get yearly blooms without fail.