Hi everyone, I have (3) plumeria plants that I started from seed about 4 or 5 years ago. I live near Toledo, OH so we keep the outside in the summertime and pull them in in the winter. Over the years, I have stepped up the size of pots they are in with the most recent replanting towards the end of last summer. When I replanted them, I used a cactus mix of potting soil and added some perlite to the mix to help with drainage. Typically when we have them outside for the summer, we let the rain water them unless it's really hot and dry for a while, then I'll give them a good watering. When we have them inside over winter I hardly water them. They are in a bedroom that we keep at about 75 degrees in a west facing window. They drop their leaves and go dormant so I don't give them much water.
Over the years, they have never bloomed (yet). I found some different foods on Amazon and ordered some and tried them out for the first time this past weekend. I attached pictures of the two I tried. I followed the directions on the labels as well to make sure I wouldn't overdo it. I don't know if it's just a coincidence or possibly caused by the feeding but I noticed the leaves looking odd.
It has been unusually cold here so I am just now starting to harden them up to get them back outside. I am setting them outside during the day and bringing them into the garage at night and plan to do this until we finally hit the 80s this weekend. Anyway, the leaves on one plant are curling under but are still rigid feeling. The leaves in another plant look like they have spots on the upper facing of the leaves but not the underside. There is also a wilty leaf that is about to drop. I can't remember if this happens every year for me so I wanted to reach out and see if anyone has any helpful information? I poked around on the internet and it sounds like maybe the spots are a fungal issue... But it also says the underside of the leaves would look rusty which they don't so I wasn't sure if it is the rust fungus.
If there's any other info you need, please let me know. I am desperate to get these things blooming. My wife and I bought the seeds on our honeymoon when we were in Hawaii and want to finally see the flowers here in Ohio! With that said, I also want to make sure I'm not overdoing the fertilizer and burn them out.