Aroids forum: Pollinating Aroids, specifically Colocasia...HELP!

Views: 1597, Replies: 8 » Jump to the end
Name: Andrew
Arkansas (Zone 8a)
Container Gardener
Image
Irrelephant
Sep 10, 2012 10:10 PM CST
I noticed one of my many elephant ear plants, Thumb of 2012-09-11/Irrelephant/541034 (and also my smallest) Colocasia esculenta var. Illustris is what I'm pretty sure it is. It's definitely a colo. It started growing this. This picture was taken yesterday and already today the spathe is open and reflexing. I couldn't find much practical information on pollinating any aroids, especially Colocasia, but I read a lot of technical information, most of which I already knew from the research I made before acquiring these plants a few years ago. That day the picture was taken, I went to every nursery in town and out of six, I found one colocasia plant in bloom. It looks like it will open tomorrow or the next day.

How do I go about cross pollinating these? The newer plant has one larger, nearly open inflorescence, and another one starting to form. Are the two plants blooming to close together in time to pollinate? I know they reach male anthesis and female anthesis at different times to prevent selfing, but I don't even know what comes first (though from pollinating other, less tricky plants I'm guessing male), or how to tell when they reach the times. When do I need to pollinate and how do I do it. If I need to, tomorrow I can take a picture of the second plant. It's a blue, purple color with a yellow inflorescence with a red base, really need looking.

Please help!
Andrew
Name: LariAnn Garner
south Florida, USA
When in doubt, do the cross!
Forum moderator Pollen collector Charter ATP Member I was one of the first 300 contributors to the plant database! Aroids Seed Starter
Foliage Fan Region: Florida Tropicals Container Gardener
Image
LariAnn
Sep 11, 2012 11:53 AM CST

Moderator

Blooms on Aroids in general are female-receptive first, then later (next day) the pollen drops. So in your case, you need to look for pollen on the bloom that opened first, and then save and/or use it on the second bloom when it opens. Here is where the trickiness comes in - I haven't done any crosses using Colocasia but in my experience with other aroids, some are receptive in the early evening, some in late evening, some in early morning and some in later morning. I don't know when Colocasia is female receptive, so you will have to check frequently when the bloom begins to open, especially to see if there is a fragrance emitted and if the spadix gets warm. Both of those are signs of female receptivity. Often the period of receptivity is short, being just an hour or two, so timing is of the essence.

Good luck,
LariAnn
Aroidia Research
Be the Captain of What's Gonna Happen!
Name: Andrew
Arkansas (Zone 8a)
Container Gardener
Image
Irrelephant
Sep 11, 2012 7:03 PM CST
How do I get the pollen into the closed part of the spathe where the female part of the spadix is?
Name: LariAnn Garner
south Florida, USA
When in doubt, do the cross!
Forum moderator Pollen collector Charter ATP Member I was one of the first 300 contributors to the plant database! Aroids Seed Starter
Foliage Fan Region: Florida Tropicals Container Gardener
Image
LariAnn
Sep 12, 2012 7:17 PM CST

Moderator

You'll need to cut away (carefully) a portion of the spathe that is covering the female flowers. I use a scalpel but whatever you use, be careful to avoid cutting into the female blooms.

LariAnn
Be the Captain of What's Gonna Happen!
Name: Evan
Pioneer Valley south, MA, USA (Zone 6a)
Charter ATP Member Plant Database Moderator Forum moderator Aroids Irises Celebrating Gardening: 2015
I was one of the first 300 contributors to the plant database! Tropicals Foliage Fan Bulbs Hummingbirder Lover of wildlife (Black bear badge)
Image
eclayne
Sep 12, 2012 9:29 PM CST

Plants Admin

Hi Andrew,
Good luck and please let us know how it turns out.
Evan
Name: Andrew
Arkansas (Zone 8a)
Container Gardener
Image
Irrelephant
Sep 15, 2012 12:16 AM CST
I couldn't get the picture to turn out very well, but it looks like it's pollinated! The female flowers are enlargening
Name: Evan
Pioneer Valley south, MA, USA (Zone 6a)
Charter ATP Member Plant Database Moderator Forum moderator Aroids Irises Celebrating Gardening: 2015
I was one of the first 300 contributors to the plant database! Tropicals Foliage Fan Bulbs Hummingbirder Lover of wildlife (Black bear badge)
Image
eclayne
Sep 15, 2012 8:30 PM CST

Plants Admin

Good news Andrew. Thumbs up In you're photograph it looks like the inflorescence is rising from a petiole with an uncharacteristic zig-zag bend in it. Is that correct?
Evan
Name: Andrew
Arkansas (Zone 8a)
Container Gardener
Image
Irrelephant
Sep 16, 2012 12:35 AM CST
Yes, when I first saw that I thought it was typical for all petioles with an inflorescence following, but the other two I have seen don't have it. Ever seen one before?
Name: Evan
Pioneer Valley south, MA, USA (Zone 6a)
Charter ATP Member Plant Database Moderator Forum moderator Aroids Irises Celebrating Gardening: 2015
I was one of the first 300 contributors to the plant database! Tropicals Foliage Fan Bulbs Hummingbirder Lover of wildlife (Black bear badge)
Image
eclayne
Sep 16, 2012 9:02 AM CST

Plants Admin

No, I haven't Andrew. The only Colocasia to bloom for me is a gigantea. We don't have a photo in the DB and I only found a few on other sites and it's hard to tell from them.
http://www.pacificbulbsociety.org/pbswiki/index.php/Colocasi...
http://www.flickr.com/photos/rnranimals/8669900/
Evan

« Garden.org Homepage
« Back to the top
« Forums List
« Aroids forum
You must first create a username and login before you can reply to this thread.

Today's site banner is by sunnyvalley and is called "Hair-raising"