Green Thorns can be used only in those facets where Solen Hives do exist: Trammel and Felucca. In other facets, attempting to plant a green thorn will return the message "No solen lairs exist on this facet. Try again in Trammel or Felucca."
When used on a patch of ground, they have a variety of effects depending on the terrain:
- Spawns piles of Magery Reagents and Fertile Dirt. These vary in quantity from about ten to twenty each, and usually total between eighty to a hundred and twenty in total.
- Summons a Giant Ice Worm.
- Summons a Vorpal Bunny.
- Summons a Whipping Vine.
- (Note: The hole is not always visible, if you can't see it once you've been told it opened simply double click where you planted the thorn).
After planting a Green Thorn, you must wait three minutes before you may plant another.