M. Jelley (USA)
Maintenance-Free Shade-Trees
They've already discovered maintenance-free grass (requiring no mowing). Now, how about botanists developing a tree whose growth can be controlled to a certain height, and which either has evergreen leaves, or else leaves that aren't a pain to rake. I think the honey-locust may have more manageable leaves, but can it grow in cool climates, too? In hot weather it's energy-efficient to have shade trees cooling the house, but they're such a PAIN to maintain. If only there were a solution!

Reward: Best of all the worlds, labor-free shade.

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