Thanks for that. They are growing in direct sunlight for the most part. I water them every day. They are growing in small pots (4inch diameter) outdoors in potting mix. I tried feeding them some dynamic lifter to no avail. Diagnoses now for large splotches are sun-damage, inadequate water or fungal infection? Looking at the small little round black spots. There seems to be two categories: 1) Dry and can be brushed off. 2) Wet, and can be spread. Diagnosis for black spots now are insect related? Thanks for your help This post was edited by waldomed on Wed, Oct 16, 13 at 17:33

This time of year-almost February- you shouldnt have any frost problems. What might help is to cover around the base of the tree with black plastic or heavy roofing paper. Mangos hate cold wet soil...once summer heats up-remove.

Just because you see papayas doesn't mean everything is honky dory. We had a very warm winter last year, which may not represent the winter and growth characteristics for this coming year. And even if they did freeze they can grow back pretty quickly. So much so that even a year old papaya can look pretty impressive. Better to be safe than sorry. I wouldn't worry about the peach as they are deciduous, and many avocados are quite cold hardy if they have Mexican genes in them... although if it's small you probably should protect it too. The others I think will need protection at some point this year. The only thing that's going to save you is very close proximity to large bodies of water, or very close proximity to a lot of concrete. Just being south of Orlando ain't gonna do it. That cold air funnels right down the middle of the state. Be ready to deal with any frost warnings, and take them seriously. After awhile you'll learn what the temperature at your house is relative to the forecast... My house is always 2-3 degrees colder than the low forecast for my city. Frost can form at 36 degrees "air temp" (which is officially taken 3' above ground level, which is always colder than the air). Calm nights are always colder than windy nights. Clear nights are always colder than cloudy nights. Depressions always get colder than hills. Any over hanging branches stop the loss of heat through radiation, so rarely will you get frost under trees. That's the basic premise of covering plants, btw. On real cold nights use c9 Christmas lights under a blanket. It'll keep them good down to the low 20s IME.

Could you upload your pictures to Photobucket or something like that? Then post those and your issues on the Tropical Fruit forum. There are plenty of FL folks there growing mangos. Without the pics and more detailed description, just impossible to diagnose.