To get to the top of the mushroom, start at Exarch's Rise, the high point above Elodor, where the capstone quest in "The Pursuit of Justice" chapter of the Shadowmoon Valley storyline played out. From the rise at look north and down to the pool of water and get down there. From the rock outcrop at at the northwestern end of the pool, look uphill to the northwest to find a similarly-sized rock outcrop two ledges up. On the ledge at where that outcrop is (don't bother trying to get on top of that rock!), follow the ledge to the southwest until it ends at overlooking the Umbrafen.
To check whether the Strange Spore has been looted, copy and paste this command into the chat window:
If a "true" appears in the chat window, the Strange Spore has been looted; "false" indicates the opposite.
- Patch 6.0.2 (2014-10-14): Added.