OK, you're welcome :) sorry I don't know the left hand one but somebody will.

Gill UK

Have you potted them all in the same type of mix, it looks the same? Does it drain out quickly? The C. cactus needs humus rich soil, the Port afra needs fast draining mix, can't suggest what left one needs though. Do a search using search tab at top of page as several posts about the named two recently, it will help you, and them.

Gill UK

Tiana

If they are 'tilting', it may be a sign of too much water and plants getting weak. They should be able to be erect and support themselves. How long do you have plants for and when were they re-potted? How often do you water? What general location/growing zone are you in?

Is the one on left fuzzy? - maybe you could post a close-up?

Rina

The middle plant actually looks to be an Easter Cactus.

Josh

Also, they are titling toward the light...they need more light.

Josh

Middle one is Hatiora gaertneri. If the leaves on the one on the left are fuzzy (Rina also asked), then I'd guess it's Echeveria pulvinata 'Frosty'. A closer look at the leaves would help. :)

Tiana

The photo you posted shows the plant but it is too dark to see any features...Rosemarie is expert on ID-ing plants so I would consider her suggestion (if fuzzy). Photo of the leave in more light would help.

As Josh said, they are in need of more light. If the plant in last photo is E. pulvinata, it has tendency to grow longer stalks, but leaves should be close together (more compact).

It seems to me that they are potted in quite dense soil, that's why I suggested they may be over-watered. Succulents prefer very good drainage, and they would benefit from more airy soil. Make sure that pots don't sit in saucer with water for too long (if there is water in the saucer about 20-30 min after watering, empty it).

The potting mix is bad, yes. But as I mentioned upthread, they're leaning toward the light, which means that they are not receiving enough light.

Josh

Tiana

'Not enough soil' is not the cause - succulents don't need to be buried deeply, that may actually contribute to the damage.

and 'they get alot of light' may not be as much as one would think - the plants are stretching, and that is definitely because of lack of light. Josh pointed that already. Winter time is difficult for succulents, days are much shorter and the light intensity is much lesser. Many of us use supplemental lighting during winter. The plant is looking for more light by growing long and thin stems and by 'bending' toward it.

Still not quite sure on ID, but leaves look smooth, so I don't think it is E. pulvinata.

The soil is not suitable for succulents - you can see how dark it is, it's too wet. Too many leaves are falling off too, very possible because of too much water.