Ask a Question forum→Help Please? Aglaonema Soft Brown Leaf

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Alberta, Canada
Sam_mj
Nov 9, 2020 8:25 PM CST
I just noticed this very limp brown area on one of the leaves of my Sparkling Sarah Aglaonema. I look at my plants every morning to check soil moisture—and to enjoy their beauty, of course—and only just noticed this today, so it can't have been there for more than a couple days.

I was hoping someone could shine some light on what the cause could be. It is time for its watering, but I assume underwatering would cause crispy brown or yellow leaves, not soft leaf tissue? I've also only ever watered it when the soil is nearly dry. It still lives in its 6" nursery pot with drainage holes, and I keep that in a decorative cover pot. I inspected it for signs of pests, and couldn't find any evidence on any leaves or stems. Aside from this one leaf, it appears quite healthy to me, with 2 new leaves just unfurling, and a flower (which I would cut off but this is my first one and wanted to get to see it at least once).

Any opinions?
Thanks in advance!

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[Last edited by Sam_mj - Nov 10, 2020 6:24 PM (+)]
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Name: Sally
central Maryland
Seriously addicted to kettle chips.
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sallyg
Nov 11, 2020 5:56 AM CST
Your care sounds right on to me. Maybe a transient problem.
That's a very pretty cultivar.
I've had/have two of these 'red' or 'pink' marked Ags. One has this leaf shape, the other more slender and tapered more like the older green and silver ones. Anecdotal at best, but mine with the leaf shape like yours was not a thriving plant- seemed to have some vague problems.

How is your light?

Here's a different question with a similar looking problem on a pink Ag--
The thread "Mysterious Aglaonema problems. Help please?" in Ask a Question forum
i'm pretty OK today, how are you? ;^)
Name: Sally
central Maryland
Seriously addicted to kettle chips.
Charter ATP Member Houseplants Keeper of Poultry Vegetable Grower Region: Maryland Composter
Native Plants and Wildflowers Organic Gardener Region: United States of America Cat Lover Birds Butterflies
Image
sallyg
Nov 11, 2020 9:37 AM CST
Here is a current picture of my Ag with those rounded leaves. It still has problems, the other two kinds in the pot seem fine.
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i'm pretty OK today, how are you? ;^)
Alberta, Canada
Sam_mj
Nov 11, 2020 4:45 PM CST
sallyg said:Here is a current picture of my Ag with those rounded leaves. It still has problems, the other two kinds in the pot seem fine.
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Thank you for responding, Sally. Yes, I have looked at that exact post since it does look quite like what is happening to my plant. Although the poster says the spots would get bigger quite quickly. And, so far, Crossing Fingers! mine doesn't seem to be doing so. The area may be very slightly larger than it was a couple days ago when I posted, but barely. I'm starting to think it MAY be somewhat normal(ish) for this variety? It does have a bit of guttation on the back of the leaf. And I do believe she could use slightly more light being a pink variety; I have her in a lower light area. A couple feet from an west facing window, but she never gets direct sunlight since she's on the opposite side of the window to where the light angles in.

Thank you, I do love her so much! I know a lot of people say they are common plants, but who cares? They're so lovely to look at! I really want to get a Silver Bay! Your Ags look lovely!
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[Last edited by Sam_mj - Nov 11, 2020 11:19 PM (+)]
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Southwest U.S. (Zone 7a)
MsDoe
Nov 12, 2020 9:59 AM CST
I've had an Aglaonema for just a few months. A few days after I brought it home, it developed rapidly spreading brown areas on parts of several leaves. I trimmed the brown parts off--shaping the cut a little to blend with the leaf shape. I didn't treat the cut edges with anything. The cut edges callused, the remainder of the leaves have stayed healthy with no more brown areas.
Four months later it seems to be doing well. New leaves are developing, no further problems. And--it perfectly matches my 1960's modern pink tiled bathroom!
Alberta, Canada
Sam_mj
Nov 12, 2020 10:43 AM CST
MsDoe said: I've had an Aglaonema for just a few months. A few days after I brought it home, it developed rapidly spreading brown areas on parts of several leaves. I trimmed the brown parts off--shaping the cut a little to blend with the leaf shape. I didn't treat the cut edges with anything. The cut edges callused, the remainder of the leaves have stayed healthy with no more brown areas.
Four months later it seems to be doing well. New leaves are developing, no further problems. And--it perfectly matches my 1960's modern pink tiled bathroom!


Hurray! That's fantastic to hear, MsDoe!! I know plants can take time to acclimate to their new homes and environments, and I haven't had her for too long either. Maybe I'll give that a try on this girl; I was going to just cut the leaf off down to where it branches out from the stalk.

Your bathroom sounds amazing, btw! Smiling
Name: John
Pomona/Riverside CA (Zone 9a)
CPPgardener
Nov 12, 2020 1:04 PM CST
It's probably a bacterial soft rot. There seems to be a lot of it going around. Trim the spot out or remove the whole leaf. Try to keep the leaves dry.
“That which is, is.That which happens, happens.” Douglas Adams
Name: Rick R.
Minneapolis, MN, USA zone 4
I was one of the first 300 contributors to the plant database! Garden Sages The WITWIT Badge Garden Photography Region: Minnesota Hybridizer
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Leftwood
Nov 12, 2020 2:45 PM CST
I think CPPPgardener is right, although what is "going around" in California would not have an effect in Canada. The infection is a hold over from when it grew in warm humid greenhouse conditions favorable for the disease. I don't think you have that problem again with your dry Alberta air. Just snip it off a cm back from where you detect damage. You want to be sure you remove it all.
When the debate is lost, slander becomes the tool of the losers. - Socrates
Name: John
Pomona/Riverside CA (Zone 9a)
CPPgardener
Nov 12, 2020 3:20 PM CST
What I meant was that this is the second post about this problem from 2 different people in the last 2 days. Maybe a grower is having some issues or a shipping problem. Anyone buying an Aglaonema should be forewarned.
“That which is, is.That which happens, happens.” Douglas Adams
Alberta, Canada
Sam_mj
Nov 12, 2020 7:25 PM CST
CPPgardener said:It's probably a bacterial soft rot. There seems to be a lot of it going around. Trim the spot out or remove the whole leaf. Try to keep the leaves dry.


Thank you! I think you may be right. And, yes, I always keep the leaves dry. I only ever water the soil, never over top of the leaves. Keeping an eye on her closely. 👍
Alberta, Canada
Sam_mj
Nov 12, 2020 7:39 PM CST
Leftwood said:I think CPPPgardener is right, although what is "going around" in California would not have an effect in Canada. The infection is a hold over from when it grew in warm humid greenhouse conditions favorable for the disease. I don't think you have that problem again with your dry Alberta air. Just snip it off a cm back from where you detect damage. You want to be sure you remove it all.


Thank you! I did choose to cut the area out, as suggested by MsDoe earlier. Good to hear some other agreements on that method. I made sure to get the entire spot, and little more healthy tissue to be sure. If the leaf browns any further after the excision, I'll snip it back to where it branches from the main stalk.

I would guess the plant shop I bought her from likely had a Canadian supplier, but I can't be certain. If I get another one from her, I'll be sure to inquire.

Thanks for the help! I will update in a week or two! Crossing Fingers! Thumbs up
Name: Lin Vosbury
Sebastian, Florida (Zone 10a)

Region: United States of America Region: Florida Charter ATP Member I was one of the first 300 contributors to the plant database! Million Pollinator Garden Challenge Garden Procrastinator
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plantladylin
Nov 12, 2020 7:55 PM CST
Your Chinese Evergreen (Aglaonema 'Sparkling Sarah') looks really nice! I agree, that one leaf appears to have a bacterial issue going on. I'd advise removing that leaf to prevent any bacterial spread to other leaves or other plants in the vicinity. If you use pruning shears or scissors to remove the affected leaf, be sure to clean them with alcohol before using them again.

Aglaonemas (Aglaonema) are one of my favorite plants, I've been growing a few for quite a few years. The ones in the photo on the left are strictly indoor plants and the single plant in the photo on the right stays outside in my screened courtyard year round. I am a very inconsistent plant caretaker so I wick water all of my indoor plants.

~ I'm an old gal who still loves playing in the dirt!
~ Playing in the dirt is my therapy ... and I'm in therapy a lot!


Name: Lin Vosbury
Sebastian, Florida (Zone 10a)

Region: United States of America Region: Florida Charter ATP Member I was one of the first 300 contributors to the plant database! Million Pollinator Garden Challenge Garden Procrastinator
Birds Butterflies Bee Lover Hummingbirder Container Gardener Houseplants
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plantladylin
Nov 12, 2020 8:05 PM CST
I wonder if the affected plants came from nursery growers in Florida? It's very warm and humid here and we've been having a lot of rain the past few months which is the perfect setup for bacterial infections to take hold in plants. Greenhouse growers usually have fans for good air circulation but I think many plants grown in the southern part of the state are grown in fields with tarps protecting them from the direct sun.
~ I'm an old gal who still loves playing in the dirt!
~ Playing in the dirt is my therapy ... and I'm in therapy a lot!


Alberta, Canada
Sam_mj
Nov 12, 2020 10:09 PM CST
plantladylin said:I wonder if the affected plants came from nursery growers in Florida? It's very warm and humid here and we've been having a lot of rain the past few months which is the perfect setup for bacterial infections to take hold in plants. Greenhouse growers usually have fans for good air circulation but I think many plants grown in the southern part of the state are grown in fields with tarps protecting them from the direct sun.


Hi plantladylin! Your Ags look quite beautiful and healthy! I hope to have a couple more myself, eventually!

Yes, I always do clean my snips before and after using them, and sometimes in between cuts, if I feel it's necessary.

I don't think there's much of a chance that this plant came from a Florida grower since I live in the western part of Canada. It likely game from a grower in western Canada.

Thanks for your advice with the sick leaf, and thanks for showing me your Aglaonema collection! Lovey dubby
Name: Lin Vosbury
Sebastian, Florida (Zone 10a)

Region: United States of America Region: Florida Charter ATP Member I was one of the first 300 contributors to the plant database! Million Pollinator Garden Challenge Garden Procrastinator
Birds Butterflies Bee Lover Hummingbirder Container Gardener Houseplants
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plantladylin
Nov 12, 2020 10:23 PM CST
LOL, I didn't even notice your location. Yes, although many south Florida wholesale nurseries ship to garden centers throughout the U.S. and Canada, there are likely a few tropical plant nurseries in Western Canada too.

~ I'm an old gal who still loves playing in the dirt!
~ Playing in the dirt is my therapy ... and I'm in therapy a lot!


Southwest U.S. (Zone 7a)
MsDoe
Nov 12, 2020 10:28 PM CST
Mine did come from Florida, but it was a long trip and I can't say I blame the grower!
Alberta, Canada
Sam_mj
Nov 12, 2020 10:46 PM CST
plantladylin said:LOL, I didn't even notice your location. Yes, although many south Florida wholesale nurseries ship to garden centers throughout the U.S. and Canada, there are likely a few tropical plant nurseries in Western Canada too.



True. The only reason I say that is because when I got the plant we were in the middle of a crazy, early cold snap in my city, and I'm not sure they'd have shipped them that far considering the weather. The plant shop had halted all deliveries out of the shop, other then local purchases. But it's definitely not impossible, either. Now I'm really curious! Thinking Ha ha! The other larger garden centre I go to often has the grower's name on the plant ID tag, and they're mostly always from Burnaby, B.C. This smaller shop doesn't have that. Maybe I'll start asking.
[Last edited by Sam_mj - Nov 12, 2020 10:51 PM (+)]
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Alberta, Canada
Sam_mj
Nov 19, 2020 12:03 PM CST
Hey all!

Here's an UPDATE on my Sparkling Sarah Ag. She seems to be fine now. As I mentioned in a previous post here, I did trim out the large brown area on that leaf, as opposed to removing the entire leaf and stem, as it was less than 50% of the leaf that was affected. I took the following photos 2 days after trimming, but she still looks the same a week after the trim. I watered her the day before the trim, removed the affected area plus a little extra to be certain I got it all, and once the cut calloused, I put her in a brighter area. And I'm happy to report that she seems very happy so far, take a look:

Here's her trimmed leaf

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And her flower that immediately opened the day after her trim, which, since I finally got to see it, I trimmed off to direct that energy to new growth.

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And her 2 new leaves that opened right up. And a brand new one appearing!

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She's looking happy

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Thanks for all the help everyone! Hurray! Hurray! Thumbs up Thank You!
Name: Lin Vosbury
Sebastian, Florida (Zone 10a)

Region: United States of America Region: Florida Charter ATP Member I was one of the first 300 contributors to the plant database! Million Pollinator Garden Challenge Garden Procrastinator
Birds Butterflies Bee Lover Hummingbirder Container Gardener Houseplants
Image
plantladylin
Nov 19, 2020 12:37 PM CST
She's looking really Beautiful!! Lovey dubby
~ I'm an old gal who still loves playing in the dirt!
~ Playing in the dirt is my therapy ... and I'm in therapy a lot!


Name: Sally
central Maryland
Seriously addicted to kettle chips.
Charter ATP Member Houseplants Keeper of Poultry Vegetable Grower Region: Maryland Composter
Native Plants and Wildflowers Organic Gardener Region: United States of America Cat Lover Birds Butterflies
Image
sallyg
Nov 19, 2020 6:57 PM CST
quite a beauty I tip my hat to you. Hurray!
i'm pretty OK today, how are you? ;^)

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