Use the following trick to get four easy potions-and more. Talk to Twilly and ask if he
has heard any rumors. Skip what he says and click on "Chase down that Seedspitter". Use
Salad Shooter against it and you will get potions. After that, it is Rilithia fighting a
Mawler. Defeat the Mawler then defeat Rilithia. He will take you to the treetop and give
you four potions. The defeat the Drakel or flee from the battle. Do not attempt this if 
you are under level 15. You will lose one potion by giving it to Rilithia.