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Gardenia: Perennial but Not Cold-Hardy in New Jersey

Gardenias are perennial but only hardy to Zone 8 (frost-proof cultivars to 7b). In New Jersey, keep potted, bring indoors winter. Use acidic soil, half-strength acidic fertilizer monthly March–October. Winter: cool, bright spot away from heat vents.

Perennials: White Substance on Gardenia: Mealybugs and Cold Hardiness; Gardenia Branch Dieback: Diagnosing Partial Leaf Wilt; Gardenia Mealybug Infestation and Leaf Drop: Prune and Spray; Why Isn't My Hydrangea Blooming?; Identifying Erythrina (Coral Tree) in Louisiana; Indoor Gardenia Care: Humidity Solutions for Pennsylvania Winters; Pokeweed (Phytolacca americana): Not Poison Ivy, But a Taprooted Volunteer; Bonsai Gift Plant: Ficus microcarpa; Gardenia (Gardenia jasminoides): Exquisite Fragrance for Dedicated Growers; Planting a Florist's Gardenia in Winter: Wait Until Spring

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