The Dink Network

Thanks! I found the peddler, and the old guy, went to the queen, came back, collected the seeds... now, I'm stuck again! On a walkthrough, it says to go back to the ice castle island, down south and east and then use helfire to melt the snow then burn the tree... I'm used helfire for a minute on every tree... nothing happens!
I'm gonna eat those seeds and leave the game for a while I guess!