While in Magiciant in the northern area you can find a red weed sitting in the middle of a bunch of green weeds. "Check" the red weed and you will recieve the Red Weed. Now bring the Red Weed to the Fountaain in the North West of Magiciant and "Use" the Red Weed. The Red Weed will change into a Magic Herb. Do this as many times as you like to recieve unlimited Magic Herbs.