Possible Clues:

• Plants that have only one season
• They're not blooming well always there
• One cancels about a lot of flowers like these
• Around you one cancels the things that last only a year
• That could get you into the record, but not perennially
• Marigolds, e.g.
• Absorbing article makes invalid go for regular books
• Reverses across area in plants
• Over small area, abolishes certain plants
• Invalidates covering article in Christmas publications