Hi --

I have this zz plant that was doing quite well. We just moved and there is a climate difference in the room in which it rests. Formerly, it was in a room that was mostly dry and cool. Moderate indirect sun. For the past 2.5 weeks it's been housed in a room with a little more sunlight (coming from the west) but the room is a warmer and a little humid. The pothos seems to be enjoying it, but please see the pic for what I've discovered on the stalk of the zz plant. Of the 8 or so mature stalks, it's on 3 or 4 of them already. I'm guessing fungus? Any hope for this plant -- if so, would be grateful for your suggestions.

Thanks.

Never had one, sorry. Does it wipe off?

I'd wait to hear from someone else, but I got some beautiful angel wing begonia cuttings a few months ago that ended up having bad powdery mildew. Looked similar.

My friend blasted them with diluted horticultural-strength hydrogen peroxide.
Even diluted it still destroyed our fingertips and the leaves, even though I rinsed them as soon as I got home.

Didn't knock out the pm on the stems though, but I've had good luck with diluted rubbing alcohol wipe-downs.

Are you able to add a pic of the whole plant?

I have only a small baby ZZ, so cannot say I'm experienced with them. But mines been living outside in the heat with certainly more humidity for last few months than any typical al aorc9nditikned space. So I'm concerned about your pot and soil. How long have you had the plant, history, how long was it happy before the move..

My zz lives outside in Florida thriving in heat and humidity.
First I would remove the infected part. If it was kept very dry and then all of a sudden went to high humidity that may have caused it. But, I'm just guessing. But definitely remove the nasty parts.

looks like that stalk is dying. The powdery white spots may be fungus but the mushy black spots appear necrotic.. dead..

my advice. stop watering it.
my first zz plant is only about 3 years with me, so i'm no expert.
I repotted it this spring for the first time when it went outside. every stem died over the next 6 weeks. i didn't water it, but it did get more rain than it wanted and with the new slightly larger pot it just wasn't drying out, and they NEED to dry out.

mine had 8 stems, every leaf on all but the newest stem died, stems shriveled, and I thought it was doomed.

good news is zz plants have some sort of rhizome/corm near the surface, so even when they appear dead, they may not be. around 1st week in July I moved it to a sunnier spot under a roof to keep the rain out and haven't watered since. look at all my new growth! I have new sprouts coming up out of the ground all over this pot. the soil is dry as far as I can reach with my index finger and I'm still not watering it. This plant gets watered less than any other plant I own. i water my succulents, jade echiveria, tender sedums, etc 3-4 times as often as this. This may be due to high humidity provided by the other potted plants clustered around it, or just typical summer humidity...

usually I water more when plants are actively growing due to long days, bright outdoor light, and high temps but this guy hated that.

now I treat it almost like a fake houseplant, lol.
I will start watering again, but much less, maybe once every 3-4 weeks when it comes inside for winter, but the average humidity in my house in winter is usually in the low teens. as long as my outdoor humidity stays above 50-60%, i'm not watering at all. (and def no fertilizers) and it's never been happier.

I have 2 likies that grow and bloom in the Spring. They're sprouting now though, on their resting period. What should I do?❤

Hi & welcome to the site, @LenaAston ! I think you meant lilies? There is a forum here for lilies where the people who love to discuss lilies can be found. Your question has gotten placed inside another discussion about a houseplant, so somebody who could discuss lilies may or may not see it. If you scroll down to the bottom, you'll find the spot to start a new discussion in the lilies forum:
https://garden.org/forums/view...

Best luck!