Compare to Columnea. If you don't find a match, do u have any other pics to add? Aeschynanthus & Nematanthus are the others that are similar.

i am the worst at identification (this looks like an echeveria i have, but I honestly dk), but i can tell you that this guy needs more sun-- he's showing early signs of stretching out. There are a million boards on this site that can tell you what kind of soil succulents like, but in my experience-- make sure your soil isn't too water-retentive, water when leaves lose turgidity, give him lots of light, and your plant should turn out okay! c:

I can't see any obvious yellow leaves in your photo, so perhaps it is just normal leaf shedding where your plant is shedding old leaves. In general, you do have to be careful not to overwater these guys. Because they have fleshier leaves, they tolerate underwatering a bit better than leafy plants. I let my potting mix dry out a little (but not as much as I would with succulents) between waterings. My Peps tell me they are thirsty when their leaves start feeling a little floppy. I've heard they'll tolerate low light, but I haven't tested that out myself. If it's not getting as much light, you'll probably have to water it less as well. I'm still a newbie to fertilizing so I'll leave that to someone with more experience to answer.

Amanda, I know three things about Buddleias. First, their roots get eaten by nematodes and they will kill the plant in a few years. This is a major problem here in Florida. I have repeatedly tried to grow Buddleias; they grow well the first year or two and then die out rather quickly. I have no idea if they are a problem in California. I suspect not. Second, they have to be deadheaded if you want them to bloom well. So, regardless if this plant is sterile or not make sure you cut off the dead flowers right after blooming. Third, they hate wet feet. If their roots are in water for even a day or so they will tend to die. Again, I don't imagine this is a problem where you live since the plants are in the ground. I believe they respond well to pruning, so you can probably cut them back quite a bit, give them a bit of fertilizer (organic if possible) and make sure they get enough water and light and they should do well. Don't know what kind you have, but they produce large blooms that are very fragrant and attractive to many different pollinators, including, of course, butterflies and also hummingbirds.