If the top stems broke cleanly at the cane with less than 2″ of stem left, they won’t resprout. Cut them off cleanly—those cuttings can root in water or damp soil.
Yellowing leaves on remaining canes suggest:
Move to a bright indirect spot indoors, correct watering, and the plant should stabilize.
Reviving a Corn Plant After Frost Damage
Professional Corn Plant Care: When to Call an Expert
Why Your Yucca Will Never Grow a Thick Cane (And What to Do)
Pruning and Repotting an Overgrown Corn Plant (Dracaena)
Corn Plant Cane Rot: Salvaging Healthy Tops
Corn Plant Pruning and Propagation for Symmetry
Caring for Your Massangeana Cane: Troubleshooting Brown Tips and Yellowing Leaves
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