Several times in the past few years we thought we had a flower, but it was only a new growth, so this year when a knob started to form at one end, about the third week in March, we didn't get excited until a definite ring of buds had formed around it. We looked over the vine and found two more of these clusters, and by early May it was apparent that each one would have from 16 - 20 flower buds. The first flower opened on May l1th. It was yellow-green, more like an Easter lily in shape (though about one-quarter that size) with a nicely fringed lip and petals of good substance. Blooming time is similar to that of daylilies. Each flower opens for a day, but each day new flowers open and this continues for a period of six weeks to two months or more. The continuing bloom gives time for trial and error in the effort to pollinate the flowers for Vanilla beans. No doubt the insect which does the job in nature needs this multiple opportunity almost as much as I did.
I had successfully pollinated some Cattleyas, but I knew from Mrs. Rebecca Northen's book, Home Orchid Growing, that there is a gimmick to pollinating Vanilla flowers. Quoting from her book - "Hand pollination was a mystery. Placing the pollen on what appeared to be the stigma produced no results. Finally, a Creole worker discovered that the stigma was covered by a shield, which had to be lifted in order to place the pollen on the stigma. After pollination, the shield snaps back into place."
With this information in mind I commenced the operation. I found that the column was attached to the lip on both sides of the column and it was impossible to lift the anther and remove the pollen without tearing the lip. There is a tiny cap underneath the anther which can be raised. Assuming that this must be the shield, I placed the pollen (which was anything but adhesive) underneath the cap and pressed it back into place. There is nothing snappy about a Vanilla flower.
The following day my treated flower fell off. With a Cattleya flower that means the operation was not successful, but maybe a Vanilla flower is different? In a few days the stem fell off too! Flowers which had not been treated also fell off the second day.
I went through my eight years of BULLETINS; I wrote letters to possible sources of information; I tried to think what an insect would do. Short of telephoning long distance to one of Mrs. Northen's workers, I was stuck.