

I'm new to this and here's my problem.
Two weeks ago I transplanted my oak and hickory seedlings to an air pruning set-up for the summer. I kept them in the garage for a week to begin acclimating them to being outdoors. I am using the smaller-leafed ones for bonsai, so I trimmed their roots and have not moved them out yet, but plan to this weekend.
The seedlings for bonsai, having gone through getting their tap roots cut, are doing pretty well. But the non-bonsai seedlings outside are losing their color, as seen in the attached pic. We tested the pH and it is between 6&7. I suppose they could have gotten burned in the sun? We've only had a few really nice days this past week and they are in a sunny place. Now someone is telling me they should only have 3 hours/day.
Higher resolution images are available at:
http://img31.imageshack.us/img31/2927/img2850.jpg
http://img31.imageshack.us/img31/2835/img2849.jpg
What's happening?
