Botanic Garden >> Gardening > >> Question and Answer >> Plant Species >> Tropical Plants

Cold Weather White Leaves on Dianthus and Pentas Wilt

Winter Foliage Changes in Dianthus and Pentas

Dianthus getting white leaves/marks; Pentas wilting.

Explanation

Nick: Cold nights cause oddities. Pentas wilt from cold. Avoid watering after noon—wet leaves at night invite fungus (likely on Dianthus). "Dry into the night" prevents fungus.

Tropical Plants: Shriveled, Brown Tomato Leaves: Root Stress, Not Disease; Puckered Grapevine Leaves: Herbicide Drift, Virus, or Mites?; Camellia Yellow Leaves and Brown Flowers: Stress or Damage; Hibiscus and Hollyhock Lace Leaves: Thrips and Atomic Grow Butterfly-Safe Control; White "Mold" on Orchid Leaves? It's Probably Mealybugs—Here's the Cure; Cyclamen Mites on African Violets: Identifying and Treating Deformed Growth; Mealybugs on African Violets: Alcohol Treatment Without Leaf Damage; Black Leaves on Houseplants After a Day Outdoors: Sun and Heat Damage; Identifying White Fungus vs. Mealybugs on Indoor Plants; Multiple Plant Damage in Cold Damp Weather: Diagnosis

Garden Articles

Scale and Mealybugs: The Sticky Residue on Your Houseplants

Reviving Houseplants After Freeze Damage

Restoring Shine to Dull Houseplant Leaves

Powdery Mildew on David Viburnum: Identification and Control

Diagnosing White Zucchini Leaves in Hydroponics

End-of-Season Garden Cleanup: Normal Leaf Dieback and Fall Planting

Leaves Alone: Stunning Foliage-Only Container Designs

Plants

Angel Trumpet Leaf Curl from Whiteflies: Spinosad Treatment

Citron Seedlings with Curling, Deformed Leaves: Spider Mites, Overfertilization, or Virus? Systematic Troubleshooting

Tomato Leaf Discoloration: Viral Infection vs. Fungal Disease

Multiple Tree Decline: Red Maple, Rhododendron, Magnolia, Japanese Maples

Unusual Leaf Coloration on Knock Out Roses: Mosaic Virus or Chemical Damage?

White Bugs on Rose Leaves: Aphid Identification & Control

Plumeria Winter Behavior: Dormancy, Fungus, and Leaf Drop