There's something strange blooming up at the old manor on Cob Hill. Locals hired by the new owner have gone missing. Unknown to all, an ancient blood pact is being honored, allowing a demonic being entrance into the world. Bloom of the Blood Garden is a 0-level funnel designed to kick off a new campaign or serve as a one-shot adventure. The adventure details the twisted gardens of Cob Hill, the crumbling manor, and the dark spaces beneath it, all of which hold terrors for the adventurers to encounter and hopefully survive. The adventure is designed for use with Dungeon Crawl Classics RPG. Written by Edgar Johnson with cover artwork by Doug Kovacs.