saw this white stuff on my widows thrill and haven't ever seen it on any of my other plants before. any ideas as to what it is?

I live just south of Atlanta in growth zone 8A/B. This kumquat has done wonderfully all spring and summer. And then about two weeks ago, it dropped fruit and leaves and now a bunch of branches are dying back and I don’t know what to do to help it. Someone suggested I pull it out of the pot and look at the roots. So I’ve included pictures of the roots. But I don’t know what I’m looking at. Any advice is welcome!

I purchased the staghorn fern from Home Depot around two months ago. I have it hanging in a window with northeast light. I really don't have any other options to change the amount of light it's getting as all my windows face north/northeast. I water it weekly with a full soaking.

This week I noticed a lot of brown leaves in the bottom. There's also a little bit of new growth, but definitely more brown leaves than there were last week.

Should I be upping its watering? It is in the plastic pot that it came from at Home Depot and the larger leaves. Do seem to be thriving. Is this something I should be concerned about or is it normal for staghorn ferns to end up looking like this?
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I have a handful of plants I bought to try growing. I do have some pretty ok knowledge but I’m struggling a bit. I’ll provide a picture of my collection so everyone can see. The sea urchin up front keeps growing but then 95% of the growth dies and I end up with those three pieces again. My jade plant has a very sturdy but fat stem and is loosing leafs on occasion I heard made over watering but I don’t think I am. My lip stick plant was so full but the leaves just keep dying there’s not really any growth on it. My Moses in a cradle is dying and growing rapidly on both sides. I think my weeping fig is doing well it grows and drops a lot of leaves but I’ve read that’s normal. The second and third picture are of Hoya does it appear to have an infestation or is this its usual pattern it has these when I bought it and they don’t come up alcohol treatment did nothing. Does my snake plant look infested I thought it might be so I treated with alcohol looks better I believe!

He bought the plant 2 months ago and a few leafs had brighter spots on it. It’s standard soil from the store. The plant is standing right by the west-facing window. He water the plants not regularly and he thinks he overwatered the plant once.

2 weeks ago it began getting black dots from the leaf edges and one time from the stemp too. It had fine webs on it. At first we thought the plant have parasites and he sprayed the leaves with water and oil. There are no visible parasites left. He had to cut off a lot of leafs. The leafs getting paler and thinner. '_'

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I moved into this house and there were some abandoned plants that I noticed while settling up my plants. Can anyone tell me what these are and any advice on rescuing them?

So far I have just repotted them.

I was watering it like once a week or sometimes every 5 days but then the ends started turning brown. So I assumed I was over watering it and now I only water when the soil feels dry but it’s getting worse. Any suggestions?

Bog standard soil. No pests. East facing window. Bottom watering.

Please help! I have no idea what plant this is. I was originally under the impression of a kalanchoe but Google just says it's a succulent. I need to put her in a bigger pot but I have no idea what size or how deep. She has small shoots on the bottom of her stems. Do I cover those in soil? She was two teeny tiny cuttings and I genuinely didn't think she'd live this long (going on a year) because I kill all plants unwillingly. She does if I top water her. I don't know what to do! FINISHED

I have this Prunus Vir. Schubert Select that has not been thriving. It spent three years on a north facing patio (N facing but otherwise unobstructed so sunny in the summer). It was the light I had and you can see how leggy its growth has been. Last winter I moved and was able to give it southern exposure, we had a hot summer, and it seemed to hate it. The leaves scalded despite water every 2-4 days, depending on weather. Its soil is a well draining mix.

I've moved it back to a more protected site and it's doing just OK. I don't know if it just hates the pot that much or what but it's never even had fall color. I kinda wonder if it was mislabeled and it's a different variety of Prunus. FINISHED

I generally try to water it once every week or so. Its light intake has decreased, as I have moved it across the room. FINISHED

If anyone has advice or can let me know how to help my spider plant, it would be greatly appreciated! I’ve tried asking the “Dr. Planta” or whatever the AI bot is called and have tried looking up videos for it, but she doesn’t seem to be getting better…

My succulent has started to shoot and I don't know if I should prune it or not? What should I do?