What type of soil are they in?

Its normal for many succulents to shed their oldest leaves, and its also normal for them to grow aerial roots. Aerial roots have nothing to do with the root structure in this case, and its growing them entirely for more stem support. Remember this is normal and your sedum looks very healthy. :)

It is normal to shed old leaves, but that seems like a lot at once. I wonder how the roots look under the soil?

Fateundermined - you can absolutely overwater even watering only once per week.

@Liz: Ok, that's good to know. I'm getting confused now because I've read materials saying water more (until water comes out of pot) but less frequently (dry in between watering). I also changed soil composition to improve drainage (with pumice and other gritty materials).

@Lorien: I moved my Sedums out of direct sunlight. I'm not sure if it will work or will worsen the situation (as I've read they like a lot of sun). On the bright side, I now have a lot of leaves for propagating the Sedum (some already with aerial roots; waiting if new leaves will grow).

I'm actually very concerned about this plant, it has lost leaves at an alarming rate and is the only one of my succulents growing aereal roots. The remaining leaves fall easily or just dry in the steam for not reason

I only water them once a week, I wonder if I should do it more often because my city usually have a hot weather, or if there a problem with the roots... I even thinking if the soil drains too fast for this weather, but it does look different from the soil of my other plants

permission to post..pls help..im just started to have my jelly bean plant..its just 3 days in our home since i bought it..it was healthy lil plant with lots of branches and babies..then this morning i notice my plant have this dark spot on each of every bean and some stems then i saw lil leafhopper..could it be the reason of dark spots? some of leaves shrivelling and falling too..what should i do to get it healthy again?

You need to post photo please.

ok here it is today..just 4 days now since i bought it

I have a succulent subscription box and just received this little guy in the mail today but he’s so droopy! What do I do??