At 20°F, banana foliage is killed. Cut pseudostems to ground level now. The corm (underground rhizome) survives if insulated.
Solid stalks now will turn brown and mushy. Don't wait—cut and mulch immediately.
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Pruning Frost-Damaged White Bird of Paradise: Technique and Regrowth
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Pruning an Overgrown 25-Year-Old Climbing Rose in the UK
Cutting Back Drosera Alicia: Decapitation for Rejuvenation
Pruning Sarracenia 'Judith Hindle' Before Winter Mulching
Dog-Damaged Red Banana: Cut Below Wound for Regrowth
Mandevilla Fall Cutback and Indoor Overwintering in Ohio (Zone 5)
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