The blossoms are actually in the exact opposite direction Dunjfall tells you to go. Check the SE corner. They congregate at about 62.5k, 60k. You'll need a group or ranged puller at level 20 because they move a lot within a very restricted area. It's extremely difficult to attack and kill one before another wanders into aggro range. Good luck.
-Dublo Seven 21 Shadowblade
Merlin