I guess this is probably more for newbies that are rooting for the first time this year, but it may be helpful to others also.
The topic of "leaf scorch" has come up a lot - and I have suggested that you should always "harden off" your trees if they are started indoors -- you must gradually introduce them to full sun to prevent burning the leaves. This "hardening off" process is usually done by putting them in filtered sun for a few days (under a tree), then gradually giving them an hour of sun for several days in a row, then for two hours, then three hours, etc.
I am going to show you why you should NEVER put indoor plants out into full sun for several hours, even if they have seen "full sun" from a window (many windows filter UV rays, and so do window screens)
The attached pictures show what leaf scorch looks like. These are some of my plants rooted a couple of months ago that I took outdoors for the first time. I couldn't get lattice up to shade them in time, and they saw about 4-5 hours of full sun one day (one day, 5 hours, that is all it took).
The white "scorched" (burned) areas are circled in red so you can see what happens. Eventually, this part of the leaf will dry out and fall apart, and the leaf will probably curl up, crinkle and fall off. I will try to remember to take pictures later to follow up.



