Is this normal for a lemon tree?

[izarys]

I planted a lemon seed ~10 months ago. I live in Poland, so I keep it indoors during winter, spring and autumn.
Now it's summer and it's 25-30* C (80-85* F) outside, so I put my tree on the balcony. Unfortunately, I noticed, that after ~30 minutes of being in direct sunlight leaves start to wilt and become very soft.

Is this normal? Should I put my tree outside anyways, or should I leave it indoors?

[bsbullie]

You would b best to post in the Citrus section.