My question is simple. If some of the stems are detaching themselves from the main part of the plant, would that be considered rot? What should I do for this? I noticed some black spots and cut them off of the plant already.
If the stems are detaching, it may not be rot. Are the stems firm or soft? Softness would indicate rot. It may be that they are responding to growing conditions (less light than they would prefer?) I agree with the above answer in that pictures would be helpful. And sulfur is a good treatment for rot. I used it successfully on a very old, large Christmas cactus which had stem rot. I removed all the soft, rotted tissue, getting down to firm, healthy tissue and then applied sulfur powder directly to the wound.
The best thing is always preventative. Wettable sulfur can help cure it if it can be cured. Pictures would help here if you can put them. You can also try putting peroxed at 1 part peroxide to 3 parts water. This can help as well.
The best thing would be to let it dry out thoroughly between waterings. These will not tolerate wett soil for very long.
Broken leaves. Will they grow back???
Where the leaves have been removed should heal over and will not grow another leaf.
This article will help you with propagation.
https://www.gardeningknowhow.com/ornamental/cacti-succulents/scgen/propagating-cacti-and-succulents.htm
About 3 weeks ago, we started noticing my Echeveria 'Dick's Pink' started getting a couple black spots on it. Then gradually it began getting more and more spots. We've always been cautious not to over water it so I don't think it could be that. Then 2 weeks ago we bought a Cotyledon Hybrid 'Ace of Spades' and within a couple days, it begun getting the black spots. I don't know if it's a fungal thing or a bug problem, or what it could be. The spots are hard to the touch and cannot be wiped away. I'd appreciate any help I could get! -The first 2 images are of the Echeveria and the following 3 images are of the Cotyledon.
A couple of the images looks like a case of Sooty Mold and it also may appear to be a fungus issue.
I would isolate the plant and began treating with Neem Oil.
Treat every 3 days for 2 weeks.
https://www.gardeningknowhow.com/plant-problems/disease/how-to-get-rid-of-sooty-mold.htm
https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm
This succulent came from my wedding bouquet and my florist said that I could plant them with the wire in from the bouquet. They were doing well for several months, but I can’t tell if they are dying. I know the brown/ reddish stems are probably dead, but don’t want to pick them off if there is something else I should be doing? Thanks!
Yes, the dark leaves are dead and can be removed.
I'm a bit concerned by the container that I can see in the image.
It appears to be glass; does this have a drainage hole?
I suspect they are just too wet and that is causing the succulents to suffer root rot.
These articles will help you with care.
https://www.gardeningknowhow.com/ornamental/cacti-succulents/scgen/care-for-potted-succulent-plants.htm
https://www.gardeningknowhow.com/ornamental/cacti-succulents/scgen/watering-succulent-plants.htm
I work in a succulent garden. So far, we have had to bring many plants into the greenhouse during the winter. This is far too much work. I'd like to know which cactus and succulents would do well in North Texas.
Try these links for ideas on cold hardy succulents and cacti for zone 8. https://www.gardeningknowhow.com/garden-how-to/gardening-by-zone/zone-8/zone-8-succulents.htm
https://www.highcountrygardens.com/gardening/planting-cold-hardy-cacti/
Is Calandrinia spectabilis or rock purslane toxic for dogs?
The Purslane family of plants in general is toxic to dogs and cats.
I had this succulent for years and about 2-3 months ago I propagated it because it was growing very tall. I also introduced it to a grow light for about 2-3 months too. Recently I noticed white lines on the leaf. 1 leaf at the bottom is dryer up with the white lines.
That appears to be insect damage. This collection of articles will help you to create pests control methods that you likely already have in your kitchen: https://www.gardeningknowhow.com/special/organic
What kind of light are you using? I see what appears to be a little bit of light damage. This can happen for several reasons. Sometimes with LED's they only contain two spectrums: Red and Blue. This is not enough to sustain happy plant growth. Led's should contain at least 9 bands to sustain good growth.
Sometimes the light can be too close causing damage as well. If you can include photos of your light source, I can help you to determine if light damage is due to the source, or from being in, both, sun and synthetic light at the same time, which will be unnecessary.
If this is a gaslit bulb such as metal halide or high pressure sodium, then the light could be slightly too close.