What could be this on my Hylotelephium 'Pure Joy'

Could be a fungal infection?
First 2 photos show plants that are from cuttings, basically all have their own root, but the same pot. it seems that slowly most of the leaves are getting like that.
In the my 3rd photo I have a different plant where basically all are clones and none of the leaves have that issue at the tips.

They have not been overly watered that is for sure, but the weather has been alternating from damp and cloudy all day to days with full sunny weather. However I water the plants, so no the rain.

I suspect it could be a fungal infection as pretty much if a rose started to have something like that would be considered a fungi, except these plants are far from roses, so I do not know. Maybe it is a virus.

Angelo here is an article on leaf spot on Hylotelephium.
https://homeguides.sfgate.com/...

@springcolor
@Calif_Sue

Can anyone help with this? I will be offline for a couple of days while moving. From what I read on the above link you don't want to do overhead watering if it is a disease, as that will spread it.
Angelo I would remove those leaves and treat the plant with a fungicide.

I have used Thiophanate-methyl
10 days ago and yesterday also.
This is pretty powerful systemic fungicide, but it does not seem do to anything.
At any rate I have sprayed all plants with it just in case other would start going bad.

I threw away some other plants what were infected by some other fungi.
I even have a Sempervivum hat has developed this problem, the tips started dying, not other spots anywhere just like these Hylotepehium.

It kind of upsets me as some of those Pure Joy cuttings develop big leaves, while last yeas they barely even had some tiny leaves on their original plant.
That plant was rotten at the root this spring so I took some barely alive clones and waited for the to root, and it worked pretty well.
They appear to be branching if I am looking at the base of the leaves where they sit on the stem.

Today, I proceeded to cut the tip that were infected on all plants. I am not sure if that is a good idea but maybe that will stop spreading the death of the leaves.

But well at the same time I have noticed more Sempervivum start to get rotten leaves from the tip down.

So far these plants have been barely watered in the last 2 weeks, weather is overcast but no rain on them. So their substrate is dry, I am surprized to see new infections on new Sempervivum.

I already had another Sempervivum cultivar that started to rot from the tip of the leaves, cut the tips, leaves seem fine but the other leaves with a tip started rotting now.

Paleo, how long have you had the semp? It almost looks like physical damage to the leaf?

I have those for little time, 1 month. Those are chicks set to get roots, I believe they got some roots as they grew a big, they produced more leaves.
I doubt it's physical damage, I have not see that before with Sempervivum that I have actually been more careless with. I was careful with these ones.

I have been careful not to touch the plants with my hands to not carry bacteria or fungi that way.
But even if I am careful all kind of fly species roam around and they could probably also carry.

I would just isolate it from the other plants and see what happens. Remove the damaged leaves and through them in your garbage.

Well I realized that when watering these pots, basically even if I am careful not to splash anything from one pot to another actually the pots will have all the quickly drained water in a big common water puddle. Maybe it is not such a big deal, but I mean that is something for sure has happened and basically in the end somehow the pots "connected" that way. Maybe not enough to mean cross contamination but at least I realized this matter.

If you think there is something contagious going on it really is best to completely isolate the infected plants.

I mean I am not sure what this "infected tip" cutting could help with actually, as obviously the pathogen is inside the entire plant, but well, I did it anyway as an experiment.

What do you think should I attempt to root the chicks of a Sempervivum who clearly was infected or throw both the hen and the chicks away.
Now quite sure, the chicks look fine so far yet the plant continues to degrade very slowly now after the fungicide and with the infected tips cut off, before it was degrading rather fast.

I would remove the offsets and plant them. The leaf/leaves that are damaged should be entirely removed all the way to the base of the plant.

Now my sempervivum started getting some beige blisters towards the top of the leaves, leaves continues to degrade.
I even suspect the compost I was suing has various fungi in it ,even if my mix is like 50% to 75% perlite seems to be an issues.
I was so looking to get some big 'Donnerwetter' this year, but this seems clearly not the year for that.

I have bought another brand of organic material for new cuttings and clones and threw the old bag of compost in the trash bin just in case.

Can you take a new photo Paleo?

Yeap, you can see one blister.
Another sempervivum I took the chicks and the hen went to the bin, it was too affected and was getting more affected, it's root looked good apparently when I threw it away.

I thought I would update the situation, since these sort of threads are usually abandoned.
After cutting all infected tips and using anti-fugal solutions several times at around 7 days apart seems the infection stopped, weather is still the same, overcast and raining each day, that is how it was pretty much each day of June so far.
Hopefully things will stay this way as some of them have quite some good leaves.

What a relief to hear things are under control Paleo. It is scary to think our plants might have something that can infect our entire plant collection.

Well the problems are back, it seems the plants that had the issues initially they get a recurrence in the same issues again.
All in the same place, same substrate same everything.
Might be a pathogen that is highly persistent.
Also the plagued plants have smaller overall inflorescence and they opened up later than the rest, which is not really a surprize considering their leaves are not in the best shape.

I'm sorry to hear this Paleo. What are you going to do?

Thanks, Lynn, I am sorry too as I like these short ones.
I am thinking of throwing away the plants that have this issue, after all I can always clone new ones from the plants that do not have this issue and make sure to label the origin of cloning so I know which are the clones of which.

Two different plants exhibiting issues: