There is one caveuat; a "safe" lie.
I.E. your disc is next to poison ivy, and you are seriously allergic, or next to a gigantic wasps/hornets/bees nest, you play a "safe" lie, agreed by the group and no closer to the whole. I believer you can get 2 meters? There are some situations where that can come up, like a loose riverbank where you could injure yourself etc.
Please make sure you look at the rules before trying to interpret them, this is why there is so much misinformation floating around about the rules. Ivy is nowhere in the rules, nor is "safe lie". Those situation you can take optional relief and have a stroke added to your score, but there isn't free relief any time you feel your lie is "unsafe". Directly from the rulebook:
Casual Obstacles to a Stance: A player may obtain relief only from the following obstacles that are on or behind the lie: casual water, loose leaves or debris, broken branches no longer connected to a tree, motor vehicles, harmful insects or animals, players' equipment, people, or any item or area specifically designated by the Director before the round. To obtain relief, the player must remove the obstacle if it is practical to do so. If it is impractical to move the obstacle, the player's lie may be relocated to the nearest lie which is no closer to the target, is on the line of play, and is not more than five meters from the original lie (unless greater casual relief is announced by the Director).