Winter Protection for Loquats, Windmill Palms, and Tropical-Look Plants in Zone 7

Mike in Gainesville, GA (Zone 7, near Atlanta) has loquat trees, windmill palms (Trachycarpus fortunei), and bananas. He wants to protect loquats below -6 °C (20 °F), figure out why some windmill palms died (not from cold), and get suggestions for other tropical-looking plants.

Protecting Loquats

Loquats are root-hardy to about -15 °C (5 °F) but suffer severe leaf damage below -6 °C. Your best defense is microclimate: plant against a south-facing wall or in a sheltered courtyard. For small plants (under 60 cm), a deep mulch and an overturned trash can or box on freezing nights works — remove it on sunny days to avoid overheating. Larger trees need a temporary frame wrapped with double-layered plastic, with ventilation on warm days.

Windmill Palm Deaths: Likely Voles, Not Water

If your soil drains well, overwatering is unlikely. Voles eating roots are a common cause of sudden decline. Keep mulch at least 1 m away from trunks. A 6 mm (¼-inch) hardware cloth cylinder buried a few cm deep around the base can deter tunneling.

Tropical-Look Plants for Zone 7

• Hardy bananas: Musa basjoo dies back but resprouts; Musa zebrina (blood banana) grows fast with stunning burgundy-green leaves but isn't hardy — grow in pots and overwinter cool.
• Elephant ears: Alocasia, Colocasia, Xanthosoma — mulch heavily for winter survival.
• Gingers: Many are hardy with deep mulch; fragrant, spectacular flowers.
• Cannas: Variegated foliage types add contrast; lift rhizomes or mulch deeply.
• Trunk-forming yuccas: Yucca rostrata, Y. carnerosana — architectural, very hardy.
• Brugmansia (angel's trumpet): Huge fragrant flowers; root cuttings in water, overwinter pots in a cool garage.
• Southern magnolia (Magnolia grandiflora): Hardy, glossy leaves, fragrant white flowers — a garden anchor.
• Annual fillers: Coleus (cutting-grown), wandering jew, castor bean, impatiens, ornamental grasses, caladiums.

All subtropicals need summer moisture and a warm microclimate (south side of house). Deep winter mulch is essential.