You can’t get blood from a stone—and if any necromancers have found a way to do that, we don’t want to know. But starting on April 20, you can get neat bonuses by applying resource-gathering implements to rocks, trees, plant life, and your mortal enemies!
Weekend Bonus: Experience (WXP too) and Gathering Yield
Date and Time: From 9:00 AM Pacific Time on April 20 to 9:00 AM Pacific Time on April 23 (UTC-7).
Gain a 33% chance of increased gathering yield when mining, logging, and harvesting. Earn double experience in open world PvE and World vs. World (does not apply to instances, dungeons, or activities).
Read More:
https://en-forum.guildwars2.com/discussion/36669/gathering-open-world-xp-boost-this-weekend-04-20-2018