Answer: Acer griseum, the Paperbark Maple, is extremely slow to leaf out each year. In your gardening region you may not see any signs of life until early June, depending upon how warm a winter and spring you've experienced. As the tree matures it will leaf out a few weeks earlier. I think you'll find it's worth the wait - the dark green leaves turn brilliant red in the fall. Since leafing out is genetic, and triggered by environmental conditions, there's really nothing you can do to speed the process.
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