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Replacing a Cement Patio Near a King Crimson Maple: Best Materials and Methods

A mature King Crimson maple sits 3 feet from a cement patio. Removing the patio risks root damage from machinery. Hand removal is best. New patio options:

Wood deck on pavers (2×4s flat, gaps for drainage, 3 ft from trunk).
Pavers on 2″ sand (no deeper than existing base).
Cement only if no deeper excavation; but cement alters soil pH and roots will lift it eventually.

Root damage >25% causes dieback. The tree is worth keeping for shade; a low wood patio is the least destructive.

Trees: Powdery Mildew on Crimson King Maple: Identification and Fungicide Options; White Spots on 'King Crimson' Maple: Common Leaf Fungus, Easy Management; Pruning a Young Crimson King Maple: Fixing a Forked Leader; Post-Patio Removal Care for a King Crimson Maple; Mulching Around a Crimson King Maple: What’s Safe?; Crimson King Maple Color Loss After Stress; Dealing with Borer Damage in Crimson Maple Trees; Crimson King Maple Bark Loss: Sunscald Prevention; King Crimson Maple Broken Branches: Proper Pruning Cuts; Don't Top Young Crimson King Maple

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