Cleveland Metroparks - You can't walk the path alongside the prairie in Brecksville (or in my backyard) without stepping on these conspicuous spiky balls. I've heard people call them monkey balls, or
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Amazon.com : Osage Orange 10 - 1000 Seeds Hedge Apple Tree maclura pomifera Monkey Balls (100) : Patio, Lawn & Garden
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Osage Oranges, Hedge Apples, Monkey Balls - Unique Winter Decoration! - farm & garden - by owner - sale - craigslist
Tree Pittsburgh - Tennis anyone?... No, it's monkey ball season! These tennis ball-brain hybrids are actually from the Osage orange (Maclura pomifera) tree. | Facebook
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