Sorc method:
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×The sorceress can use Arctic Wind to pull a flower out, and then use Flame Aura to pick it up.
Rogue? Hm... I'll let you know after some experimentation.
ETA:
Rogue Method: (at least the one I found)
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×Visit the screen in the afternoon. Heime will be there. Tell him that you have a very important quest for him, and you need to get a flower. You'll prop him up on your back and he'll climb up there, then cut a flower with his wooden sword.
After that, use the Tinderbox on the flower and you'll succeed. You'll also get some Thievery experience for it.
[Last edited by Zachski at 01-04-2014 07:13 AM]