Black tip is usually a result of plant stress. It can be due to too cold temps, too wet temps, root damage, bad spider mite infestation, among other things. Also, really young plants or newly rooted cuttings. Early to mid-spring is usually the worst time for it -- as the plants want to come out of dormancy, but poor culture is preventing them from bouncing back.

You should be OK as long as your temps are above 55 to 60 degrees and you are not overwatering.

Thanks for your input Chris and Dave :)

I've not had problems with black tip in the past. But have read old threads here that talk about Donald Angus being troublesome in particular, and about those who've chosen to spray with a fungicide regularly. I guess I'll just keep fingers crossed and forget about that until the problem arises.

Chris I raise strictly indoors. Right on the ocean in Oregon and our particular microclimate seems to kill everything but pines, spruce, and rhodies. We not only have 85mph winds in Oct- April, but almost everyday have 45mph after 10am in the summer. On a nice day here and there I'll bring as many plants as I can outside but usually have to roll in when the winds come. It's a challenge but I love it. All 40 doing well inside, and keep fingers crossed good juju keeps on.

Dave, I've just outgrown my loft grow space indoors, so added more electrical circuits, wallboard and flooring to a 15x15 area in our basement. Change of environment may surely cause some plant health problems I'm trying to prepare for. Duplicating everything I've had in my indoor grow space- same lights but more, same temp and humidity, and fans. Bracing for new difficulties though, like spider mites but I neem oil everything preventatively every 2 weeks. Wondered about the fungicide in particular because of a basement environment, and hoping with proper watering and humidity I can keep those at bay. Open to any suggestions you might have.

Thanks again to you both.

Nancy

No problem Nancy - it's probably a good thing that you have it indoors, alot easier to control the humidity. As long as you keep it warm and dry, you will be good! Good luck and if you ever need anymore help feel free to drop a line

Too much soil moisture during dormancy will be much worse than high humidity in the air.

Thanks Dave. None of my plumeria went dormant this year. Because all of my plumeria (23 cuttings and 16 seedlings) were just rooted from last September until now, no dormancy for anyone. Next fall will attempt to duplicate outside conditions in the fall and learn from that experience! Sure appreciate all the help you always give :)

Nancy