If i understood correctly the plants were not experiencing any issues until the last two days? If this is the case then it's highly likely an insect or fungal issue. I would spray with a 3in1 type product or Neem oil to reduce/eliminate the insect and fungal issues. Then continue observation. While the images look like they were taken in the evening how much sun do the plants get? I would have expected further growth if planted in February. If this is the case then I am also thinking the ground may be too wet. Can you reduce the irrigation and if you really want them there remove any shade/canopy to increase the light?

Thanks for the reply! I ended up figuring out they had plumeria rust after doing some hours of research. The breeze that was here for 3 days or so brought it from another plant around the corner and so i removed all the leaves and have started to see new leaves growing again.

Two of the plants have full sun, the other two have partial sun but it's because there is a tree branch directly above them which I would have to have the association cut. The plants are planted on a slanted hill, so I was hoping the water would drain everyday (we have an automatic sprinkler 2x a day) because the watering they receive may be too much.

@the_first_kms2 so i think now maybe the plants have a black tip fungas problem. The leaves never grew back, the plants start to shrivel up and the tops are black. I dug one up and found tons of worms inside the plants first layer and then cut off the black tips. Is there any hope?

Posting to your new thread.