General Discussion forum: Weak stems ?

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Views: 26, Replies: 12 » Jump to the end
Imagecrowrita1
May 19, 2014 4:17 PM CST
Name: Arlyn
Whiteside Co, Illinois Zone 5A
Ok, this is the second one of these I've seen this spring. 1st was on a clump of Snow Maiden, and I just cut it off, and forgot it. This one is on a clump of Sans Souci. The stem is as limber as a wet noodle, and seems sticky( maybe sap oozing out?) it was fine yesterday. What's your guess as to cause? Have you ever seen it before ?....ArlynThumb of 2014-05-19/crowrita1/64fad3
Thumb of 2014-05-19/crowrita1/ba5aba
ImageDaveinPA
May 19, 2014 6:33 PM CST
Name: Dave
south central PA, Zone 6a
I have seen similar things with the foliage of several varieties. Some were "stuck" to other leaves, or curled with one curve or with a wavy pattern. The stem of one did the same. I was able to "unglue" the leaves and the stem; the stem then straightened somewhat. My suspicion is that the winter harshness late in the season is a possible cause.
Imagegrannysgarden
May 19, 2014 6:46 PM CST
Name: Bonnie Sojourner
Harris Brake, Arkansas, zone 7
The Magnolia Zone
I am still puzzled by TB Coal Seams. Its rhizome is healthy and its leaves are green....they are just floppy like a rabbits ears. about half way up they just lean over and sink to the ground. I took it up and put it in a big pot. I moved it away from all other irises. It has not put up a bloom stalk. It still looks healthy, and has increases....its just floppy. If that is the way it is supposed to look I probably will not keep it. I like all kinds of irises but I want the standards to stand up and the leaves to be upstanding also. it was a bonus last year from Schriener's. Does anyone else grow Coal Seams or has anyone else gotten it as a bonus iris? If so let me know how it is growing in your garden.
Imagecrowrita1
May 19, 2014 6:54 PM CST
Name: Arlyn
Whiteside Co, Illinois Zone 5A
I think tomorrow, I mat do a "dissection" on that stalk.And maybe that whole rhizome and fan. It is literally as limp as a piece of string! I've seen what I think you're talking about, Dave, and if so, this isn't it ! In that case, as I remember, the stalk stood up, almost right away, when it was "un -hooked".....Arlyn
Imagetveguy
May 19, 2014 7:55 PM CST
Name: Tom
Wisconsin
a couple of years ago I had something like that Arlyn, it was rot in the middle of the stem. I haven't seen it since, though. The middle of the stem just turned to mush. This year I have noticed a few spindley stems on Cat's Eye that I attribute to the lack of sun shine. We've had some long streaches with no sun here.
ImageSnork
May 19, 2014 9:45 PM CST
Name: Pam
Southeastern PA
Bonnie I have new planting of Coal Seams. It is growing normally and has a bloom stalk with a bud. No problems with it so far.

Arlyn I am also finding limp bloom stalks in various areas of the garden. The center of the stalk turns to mush and the whole thing eventually rots off. Seems to only affect a single stalk here and there - not an entire plot. I have been cutting them out and cleaning the remaining stump with a bleach / water drench. I have never noticed this before in the garden. Wondering, as Tom stated , if it is from the late season and then rapid growth and big swings in temperature.
Imagegrannysgarden
May 20, 2014 5:21 AM CST
Name: Bonnie Sojourner
Harris Brake, Arkansas, zone 7
The Magnolia Zone
Thanks for the response Pam to my question on Coal Seams. I really wanted to see it bloom and it will not this year. I am going to keep it isolated and take care of it and perhaps next year it will be 'normal'. When your CS blooms post photos of it. The only pictures of it I have seen are the ones in schreiner's catalog.
Imagecrowrita1
May 20, 2014 2:40 PM CST
Name: Arlyn
Whiteside Co, Illinois Zone 5A
I sharpened my pocket knife and did some "exploratory surgery" on the "weak stem " today, and it appears that in the area just below the spathe, the interior of the stem has rotted. I wonder if moisture is "funneled" into the spathe, and some how caused the interior of the stem to start to rot?! The stem, both above the spathe, and below the "soft 'section, appears fine, and sound.Thumb of 2014-05-20/crowrita1/7ea39f

Thumb of 2014-05-20/crowrita1/35db93
Thumb of 2014-05-20/crowrita1/ee3d78
You can sorta' see in the last pic, with the stem split open, that the interior is all mush, while the outer layer is still sound. But with no "innards" it's not strong enough to support itself.I guess all I can do is remove them if more appear, so the rot doesn't spread down the stem, to the rhizome..Arlyn
ImageMuddymitts
May 20, 2014 2:47 PM CST
Name: Mary Ann
Kentucky
I've found several of these too this year, Arlyn. Other stalks on the same clump were fine. Can't account for the ruined one. But I've found several abberations this year -- limp stalks, rotted rhizomes, smaller than normal flowers. I think it's just a consequence of the weather -- it would get warm for a few days and the stalks would start, and then it would get real cold and they'd stop. Then it would get warm again -- and cold again. Not a normal spring for us at all.
Every day is a second chance. Every day is precious time.
Imagegrannysgarden
May 20, 2014 3:23 PM CST
Name: Bonnie Sojourner
Harris Brake, Arkansas, zone 7
The Magnolia Zone
I have heard of this referred to as 'stalk wilt'. I don't know what causes it but think it is due to a lot of environmental stress like Mary Ann says. I have not heard that it is fatal to any iris.
Imagecrowrita1
May 20, 2014 4:20 PM CST
Name: Arlyn
Whiteside Co, Illinois Zone 5A
Here's a pic I took just now, of California Gold, and it's displaying "damage" from what Dave was referring to,earlier in the thread. The stalks wouldn't "come out' of the leaf sheath, and grew crooked, and it even deformed the bloom, as the bud was "trapped".

Thumb of 2014-05-20/crowrita1/b891ca
Thumb of 2014-05-20/crowrita1/9d2244
I guess with this many iris, there are bound to be one, or two, with problems Shrug! ...Arlyn
Imagetveguy
May 20, 2014 6:39 PM CST
Name: Tom
Wisconsin
That appears to be just what I refered to earlier. It only occured in one iris that year though, but both stalks on it were affected. I cut them off above the rot and put them in a vase and they bloomed anyway.
ImagePollyK
May 22, 2014 8:51 AM CST
Name: Polly Kinsman
Hannibal, NY

I've had it happen a couple of times. I just cut off the misformed stalk, and it's always fine the next year. I would agree with environmental causes.

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