We had low night temps in january around -7°C, just for few nights, and sadly I can't remember when I noticed those leaves

We have very poor sunlight in winter because sun is low and we have some hills surrounding the house that stops sunlight.
Now the sun is changing position (or the earth?) and we get a bit more of direct sun.
There's a lot of humidity, moss everywhere and sometimes some mushrooms born in the garden.
The moss lives on the small rocks that are around the flower beds. Direcly on the soil I see it only near Stella de Oro, and it's in another spot of the garden. But Stella does great (apart aborting pods) and so does Little Show Stopper that is close to it.
Yes interveinail chlorosis appeared the past summer, in my hair too since I'm going white :nodding:.
We had a really hot and dry summer so I used tap water (not filtered) with high PH all summer long.

Well a few nights of -7C (19F) is certainly enough to do some damage. Chances are if the leaves had been like that before then you would have noticed. For the time being I'd put it down to the cold and just remove any leaves that don't look like they will recover (if you don't want to leave them to take their chances). If there's still interveinal chlorosis when the soil has warmed up then maybe think about adjusting the pH down a bit. Sorry to hear you're getting chlorotic as well

Chlorotic hair may be a new trend

I don't like the foliage in general, it's not so good so I can't decide. Some leaves have still traces of aphids attacks, some are brown, some are ribbony... not so good to see but maybe it's best to let mother nature do her course.

Well - functioning leaves are making food for the plants. This is the food that they use to grow (fertilizer is just a mineral supplement). If you cut off the leaves then they'll have to use whatever food they have stored in the crown/roots to stay alive. Then they'll also have to use stored food to regrow new leaves so that they can start photosynthesizing again to feed themselves. Chances are it wouldn't do them any serious damage, daylilies are tough, but it likely won't help them as much as it will help you when you look at them.

I will wait again and let DLs go as this, in the meanwhile I went outside with a torch and found.. slugs. I'm so ignorant that I didn't even know there are slugs that come out at night, I only knew the big orange ones that come out after rain and are more diurnal.

Do slugs nest???? I found them in couple at the base of the plants, close to each other like forming a circle.

Are you sure the circle ones are slugs and not caterpillars? Cutworm caterpillars curl up in a c shape like this:

http://www.daylilies.org/ahs_d...

They were slugs, they had horns and slime. I didn't see any caterpillar, and I can remember the past year I found many.
These slugs were very light in color with some brown streak, so I'm wondering if they were young baby slugs and about nests.

There are different species of slugs, so their appearance is also going to be different. They do kind of congregate, not sure it would be an actual nest. Anyway, are you going to pick them off?

I can't pick them off I can barely tolerate to look at them. One problem in gardening for me is that I can't stand animals and insects. If I hear a bee flying I immediately run in the opposite direction. I know it's a non-sense but I can't help myself. When I find pests on plants I feel itching for a couple of hours and keep on scratching my head and arms

I put some salt all over the soil. I found only 4 for now.

I'm chlorotic and hysterical LOL!

We talked about these types of leaves in our last club meeting. We determined they were weather related. We would have several warm days with growth and then have below freezing days. Planning cut the leaves back. Didn't have any blemishes on the leaves just discoloration.

Thank you Liz, so you would cut the leaves? It may be what happened here, I didn't pay enough attention so I don't really know when it all started. December has been very mild (and the plants were full of apihds) then in january we had some freezing at night. This is why it reminds me of frozen lettuce!

Sue,
Nice sleuthing. I was headed out for a bike ride so I just Googled the product name. Most of the sites were Italian. On the one I could read, I was a little puzzled when I saw no mention of a fungicide, because the chemical name resembled one, and if they're adding it, why wouldn't they brag about it, you know?

Sabrina,
Sometimes I find groups of slugs congregating under bricks or pots. I've noticed that when night-hunting snails, they tend to run in pairs—and if I find one, there's always another close at hand. As a side note, they're hermaphroditic, so they're less concerned with finding "the right one" as they are with finding "anyone". I would assume slugs operate the same way.
As a survival mechanism, every snail doesn't emerge every night to forage, and not all at the same time, meaning that you have to hunt them consistently, at staggered times, until their numbers are depleted.

**************************************
••••• [Yuck-alert] Graphic details of •••
•••••• slug/snail massacre follow. •••••
**************************************

They follow slime trails, so a good way to find more is to leave a "terminated" one where it lies, and the next night you'll find others scavenging the carcass. I had so many slugs at one time that I used dry pine needles to skewer them, because their slime is hard to wash off, and has been known to carry parasites.

Sabrina,

I'm with Sue - don't trim the plants back. They need their "solar panels" to generate carbohydrate. I think that's why they're called leaves, because we're supposed to leave them. They'll sort themselves out, and the nastiest old ones will "age-out" on their own. Meanwhile, the plants will do better with them. I don't usually pull leaves unless they're half-yellow. I started feeding a few weeks ago and have quite a few plants with slightly floppy foliage, but they'll self-correct with time.

Sabrina, please, get some good garden gloves so you can squish those things. If they have them in Italy, use plastic examination gloves that you might be able to buy at a pharmacy. Tweezers would work too. Oh, sprinkle salt on them! I live on the beach where my daylillies get salt in the air and salt in the well water we use. Salt in limited doses doesn't hurt daylilies. Maybe grind some sea salt on them.

As a personal note. We have a dear friend who illegally came to the US probably 10 yr ago from Naples, Italy. We met Pietro at an Italian restaurant he owned with his awful brother. They are twins and totally different. When we first met Pietro couldn't speak but a few words of english. Since then my husband helped him get medical follow up care for cancer that had been treated (brutally) in Italy. I won't mention what they cut off. Anyway. After that we helped him get a green card and now he's applying for his "permanent green card" that can help him get citizenship. I make huge platters of cookies/candy before Christmas for him and his staff (he owns 2 restaurants now). He won't let us pay for any visit we make to either of his places. He is the kindest, gentlest and caring man I have ever met. I love that guy! We keep helping, but wish he would let us pay for the food we eat. Forgetabboutit!

Hope you get some relief from the critters. They are everywhere! We have a variety of them in FL and they make life miserable!

Thanks everyone for your help!!!
Today the sun is shining so when it will hit the garden I will go to take off some of the older yellowed leaves and il will LEAVE the others Ken, you made me laugh!
I will keep on searching for slugs or other nice things living out there. I used salt but tomorrow we're expecting rains so salt will be gone.
@florange there's no way I will take one of those creeping things and squish them with my hands. I read that iron in grains is lethal for them and good for plants so I may go that way to avoid chemicals. In this garden I suppose chemicals won't do much damage because I have flowerbeds they are like large tubs or tanks filled with soil and remainings of the buildings (i often find piece of stone here and there), I don't think there's a connection with the underground. Anyway, maybe iron it's an idea.
Very kind of you helping Pietro. I would love to come to live there, it's a dream I have for many reasons, I may give you a call so you can help me too!
all!

Sabrina, you could try my grandfather's old method of putting a board of wood near the plants. The slugs should hide under it during the day because they need to be in a dark moist place and come out primarily at night. Then in the morning when the sun is up you can scrape them off the underneath of the board (use gloves and some kind of scraper so you don't have to touch them) - scrape them into a bucket of soapy (or salty I guess) water. Or you could use his other method of sinking an empty food can, such as for sardines or salmon, whatever you get there, and filling it with beer. The top of the can should be level with the soil surface. The slugs are attracted to the beer, fall in and can't get out. That's assuming no animals are likely to take a swig of beer - I would be leery of that method here because I'm not keen to encounter an inebriated skunk

If neither of these work or appeal to you, get some diatomaceous earth (DE) and put some around the base of the plants. You should be able to get it at a garden centre.

You can sprinkle salt directly on the slugs, but don't keep sprinkling it on the ground. Daylilies are quite salt tolerant but eventually it may accumulate too much. In ancient times salt was the first non-selective herbicide as far as I recall. Some people use household ammonia for slugs but I haven't used it and would have to look up the dilution - maybe someone else here uses it.

Sue, the method I like most is diatomaceous earth, I'm planning my trip to the nearest garden center and will sure buy some (if they sell it).

I can't stand the idea of checking slugs

I know about beer but I'm not using it because the neighbour is an alcoholic and I don't want to open the windows and finding him drinking directly in my garden!!!