let's see pics of the tree and a closeup of the trunk soil interface.

Most problems like that are..not enough water. Especially in soucal and lately. It sure isn't the winter cold.

Do the fingernail scratch test to see if the nonleafing trunks still have green beneath the bark. There are borers that attack Erythrinas in Hawaii, Florida and Mexico, which aren't commonly seen here in California. No foliage in over a year would seem to indicate those branches/trunks are dead.

They do go dormant also..they aren't evergreen. So trunks could be alive waiting for.. some water. The previous owner might have pushed it into dropping all leaves..and its hanging on. Its a big coral tree. I had thought you had a 6-8' with one branch alive!.
Is that E. caffra? Once you get them back to growing, THEN go easy on the water.

It is still green under the bark. I would think it is getting enough water, the grass there gets watered and the bushes behind get watered. The ground isn't super soaked, but I was afraid to add water lines near it because everything I read online said they don't like a lot of water. Maybe it will leaf this year. I just wish I knew what to change to make it happy. When I bought the house it was out in flowers, but very sparse leaves. Then the flowers fell off and the leaves never came back. I bought the house in May 2012. I did have it trimmed by an arborist when I first moved in, maybe that made it go dormant?? It is a big tree and it was so pretty with the flowers. I hate to remove it if I can do something to save it. I have no idea which variety it is. I was guessing Erythina caffra, but I based that just by looking at which one looked most similar in pictures.

Yeah,the pruning took off all the flowering age growth. And as you saw..they are dormant when in bloom. Its looks big and very healthy to me. Never tip prune..or your pruning off the very point of having a Coral tree!
It will leaf out soon. When it does you might then feed lightly..and then go easy as they can bloat up, and fall over,or at least drop even big branches if watered too well.
But, looks great to me. Congrats on having that. Try Aloes or succulents under it..better then grass.

Hi! I have the exact same problem with my coral tree. My tree looks like yours, talonstorm. We purchased our home also about 2 years ago and at that time, it bloomed beautifully (I think it was around end of Feb). But since then, no flowers. Some branches have leafing but the majority do not. I tried doing the fingernail scratch test as bahia advised and some branches are green underneath and some look light to dark brown underneath and dried out/dead. For those dried out branches, would I just have to cut them off? I've never pruned the tree and I'm afraid to. I read that pruning incorrectly can somehow remove the flower buds. Any tips on how to get this tree blooming again? Talonstorm, how is your tree holding up? Were you able to get it to bloom again? Thanks!

My very green and very healthy looking, growing coral tree just stopped blooming in June or July in zone 10. I don’t know what to do. The whole reason I got it was for the blooms. Is this a normal cycle? It’s on drip irrigation.