Amorphophalus 'titus'?

Acton, CA(Zone 8b)

Got this plant at a succulent sale in Southern California recently but can't find name on the internet... what do you think it might be?

Thumbnail by palmbob
Pontotoc, MS(Zone 7b)

that looks just like the one I have that I just posted the question about its seed pod !

noonamah, Australia

The differences in the leaf between species can be very subtle, the flower is the better bet for ID. A very close up photo of the petiole might give it away as there are differences in the colour and pattern on them.

I haven't been able to find any reference to Amorphophallus titus in the genera lists. I'd suspect that somewhere along the line someone has taken the expression "Titan Aroid" for Amorphs, has mistakenly latinised and applied it as the specie name. That's the only answer I can come up with.

Dandridge, TN(Zone 6a)

It looks like Amorphophallus konjac.

Poughkeepsie, NY(Zone 6a)

Well, this is a 4 pound Konjac. 7 inches in diameter at planting time. Photo taken this morning:

Thumbnail by tommyr2006
Dandridge, TN(Zone 6a)

Nice. Here is a photo of the biggest one I ever had, unfortunately the growing season was not long enough for it to make a new bulb, when we dug it in October there were lots of roots but no bulb, very strange!

Thumbnail by lakesidecallas
Prairieville, LA(Zone 9a)

Palmbob. I believe it is Amophophallus Titanum. Saw pictures of one a few years ago, and a man was standing in the center of the flower with a gasmask on. The trunk was many feet above his head. The tag line said it was the largest known of its genus.

Miami, FL(Zone 10a)

I have to say that your plant is not A. titanum, as the A. titanum does not have a dark trunk as yours has. Also, the leaflets on A. titanum are much larger and fewer than those on your plant. It is surprising that you did not get a bulb; was the plant growing from Spring to Fall? if so, perhaps you needed more phosphorus (P) in your fert mixture. I have a couple of the large variety of A. paeonifolius that were much taller than your plant is shown in the picture (mine were 6 to 7 feet). They both bloomed this year so no leaf until next year.

LariAnn

noonamah, Australia

I haven't seen konjac directly, but from all the photos I have seen it appears its leaf (leaflets) don't spread out as wide as the paeoniifolius. From that, Geoff's (palmbob) amorph looks more like paeoniifolius to me. On a different thread someone said there was a difference in colour and pattern between those two.

My largest paeoniifolius has flowers virtually each year and a leaf every year, but it doesn't set seed. It looks as though the leaf is a trade off against the seeds when they do flower.

The other day I collected some more tubers, the biggest weighed in at 2016 grams (the smallest 56 grams). My original one was nearly twice the size of that when I first collected it, and the leaf grew a good 2 metres tall. Over a number of years I never re-potted or fertilised and tree roots grew into the pot. This year when I pulled it out it was much smaller. They do appreciate a bit of TLC.

Dandridge, TN(Zone 6a)

Really,I'm positive it's konjac.
Paeoniifolius has a green petiole with green spots.

Thumbnail by lakesidecallas
Dandridge, TN(Zone 6a)

Here is one of the gas mask pictures, maybe not the one you saw, but it's still funny.

This is Craig Allen, who was famous for growing all sorts of Amorphophallus at Fairchild Gardens in Florida. He flowered "Mr. Stinky" and "Alice the Amorphophallus"

Thumbnail by lakesidecallas
Acton, CA(Zone 8b)

not sure if they all have weird leaflets like this, but the leaflets almost look like one long leaf spread out along the petiole.

Thumbnail by palmbob
Acton, CA(Zone 8b)

here's a close up of top of stem

Thumbnail by palmbob
Prairieville, LA(Zone 9a)

It is my understanding that the plant puts out a stalk with one single leaf comprised of multiple leaflets.

A word of caution, my grandson was playing around my potted Amorphs and was running a toy dinosaur up and down the stem of Grandma's dinosaur food plant. He suddenly began to cry and rub his hands and arms. He scratched the surface of the stem and the sap caused a burning rash. Soap and water and a little benadryl cream took care of it, but not something you want in your eyes.

noonamah, Australia

Amorphs only produce one leaf at a time, usually for the season. Nutrients are finally withdrawn from that leaf which withers and the tuber becomes dormant. I have heard that very young plants of some species will produce additional leaves but not as they get older.

That petiole looks too dark to be a paeoniifolius. Mine are a paler green. The leaf looks the same though.

Post a Reply to this Thread

Please or sign up to post.
BACK TO TOP