Greenskeeper Gathering 2019 begins May 26th at 06:00 server time
Recommended venue is Rainsong Jungle, followed by Scorched Forest, and Redrock Cove.
Data from here. Thread about holiday chests, their contents, and their locations/mob drops is over here once the holiday starts.
Listed below is your % chance to encounter a currency-dropping monster in a venue, then a list of nature and neutral creatures in each venue. Non-italicised are nature, italicised are neutral.
For those of you that can’t grind, here’s a handy-dandy link to the lowest treasure price by unit for Bladed Flatleaves.
(20%) Training Fields - Leafy Moth, Silky Webwing, Amaranth Moth, Bumble, Ceanothus Brawler (29%) Woodland Path - Dryad, Greenroot Janustrap, Leafy Moth, Strangler, Wildwood Owl (32%) Scorched Forest - Moss-Covered Golem, Augite Protector, Extinguished Jackalope, Red-Winged Owlcat (17%) Sandswept Delta - Fuiran, Peacock Scorpion (28%) Blooming Grove - Barkskin Watcher, Flora Cerdae, Rosaline Strangler, Wood Ear Deer, Five-Toed Pilco, Fungi Sage, Spotted Faun (25%) Forgotten Cave - Cursed Bat, Crimson Reef Snail, Deepmine Aardvark, Venomblade Assassin (18%) Bamboo Falls - Mantled Foo, Tengu, Tigerblood Foo (28%) Thunderhead Savannah - Grassland Skira , Dire Vulture, Magpie Sphinx, Raptorik Herder, Unburdened Billy (30%) Redrock Cove - Vivid Wavehopper, Maren Spearmaiden, Mirage Puffer, Noxious Coralclimber, Waveswell Sorcerer (24%) Waterway - Everglade Lasher, Sewer Toridae, Fanrat, Maren Currentfinder, Radioactive Slime, Rat King (18%) Arena - Warcat Protector, Chimera, Charcoal Sprangyroo, Double-Tailed Warcat, Raptorik Ringmaster (23%) Volcanic Vents - Ophiotaurus, Serthis Loremaster, Armored Duskflapper, Basalt Vent Hop, Flamescale Illusionist, Ghost Manticore (38%) Rainsong Jungle -Barkback Boar, Budwing Morpho, King Parda, Hippocampus, Parda (22%) Boreal Wood - Elk, Longneck Hunter, Winter Wolf (29%) Crystal Pools - Sparkling Stinger, Almandine Sturgeon, Clearwater Oracle, Moonbeam Crayfish (23%) Harpy’s Roost - Cloud Dancer, Cardinal Hippogriff, Dodo, Mesacliff Harpy (26%) Ghostlight Ruins - Longneck Scholar, Malevolent Spirit, Carrioncorn, Disoriented Spirit, Greybeak Reaper, Longneck Medium (27%) The Mire - Poisonous Toridae, Shellion, Southmarsh Podid, Wetland Unicorn (20%) Kelp Beds - Maren Ambusher, Depin, Mammertee (29%) Golem Workshop - Construction Mith, Monkey Wrench, Sentry Squawker, Steelhound
