Non blooming dendrobium

[Murna]

This is my first post and I would love to have some imput to my problem.
Ilive in the caribbean so I have my orchids outside year round, good humidity and temp but with all this I i cannot get my dens. to bloom.
They're healthy with new canes but just don't spike, natrually I fertalize regularly and still no blooms.
Any sugestions as to what I can do differently?

[RosieC]

Welcome to Orchid Board

Dens are a large group and can vary in the care they need. Do you know what sort they are? Once you have 5 posts you can post pictures and that might help to show us what you have.

Dens in the Phalanthe group tend to need high light to bloom (though where you are direct light could still easily burn them), too much shade may stop blooming.

Also many orchids can be inhibited from blooming by too much Nitrogen in the fertiliser. You need to get a balanced amount to both encourage growth but allow flowering. What fertiliser to do you use and at what concentration?

[WhiteRabbit]

[NYCorchidman]

Yeah, you need to identify what kind of dendrobium you have. Many of them need cooling to induce blooming and they may never bloom in the tropics.

[RJSquirrel]

The diurnal range. Difference between day and night temps. Cooling off at night indeed is needed for many orchids to set blooms. A dormant period during the winter months is needed for many of the dendrobiums. The combination of cooling off and staying dry over the winter months sets new roots new shoots and BUDS. In the Caribbean you have no much winter and the plant is perfectly happy to grow and thrive.
.
Being close to the equator your diurnal range is going to be slim. Where as being farther from the equator provides a much wider range of temps. For example Jamaica has an annual avg diurnal range of 3 degrees. Malaysia on the other side of the world has an avg range of 23 degrees. Thier dry season is from May thru september. Your dry season is early in the year january thru february.

You have to accommodate and adjust your culture some to get the plants internal mechanism clicking for you. Know what the plant is and what its needs are and gauge that against what you are giving it and you can realize very rapidly whats causing your issue. Its not easy sometimes to get to the bottom of it but it if were easy we would have found something else to do.

[Murna]

I am soooo confuded. Doing all these things except the temp.,cant controle that.
The pronlem is I lost it's tag long time ago, so she has no name, no wonder she's confused like me.My other plants are happy and show off regularly except this ungrateful child.
It's big with strong canes and has never spiked.
Would love to send picture but I'm not tech savy and can't find how to do that.

[WhiteRabbit]

http://www.orchidboard.com/community...ng-photos.html