Diagnosing a Single Ailing Crepe Myrtle Among Healthy Ones

One of 6-8 crepe myrtles in North Texas shows white powder on limbs, sticky coating, and drooping leaves despite regular watering. Extreme heat (70+ days over 100°F). Differential Diagnosis White powder on limbs: Likely

Controlling Oleander Caterpillars: Life Cycle and Treatments

Yellow caterpillars with black feelers repeatedly infest oleander. Hand-picking and soapy water gave temporary relief. Pest Profile Oleander caterpillar (larva of polka-dot wasp moth) – native to Caribbean, now in Gulf s

Crepe Myrtle with Sticky Leaves and Dead Branches: Honeydew and Sooty Mold

Two-year-old crepe myrtle in Tomball, TX has sticky, oily leaves (half the canopy) and dead branches with blooms. No prior disease matches. Diagnosis Sticky coating = honeydew from sap-feeding insects (aphids, scale, whi

Plumeria Losing Leaves: Overwatering, Mealybugs, and Fungus

Potted plumeria in a lanai shows yellow-spotted leaves turning brown and dropping. Other plants died with hollow stems and white bugs. Diagnosis: overwatering leading to root rot, plus mealybugs and fungal leaf disease.

Replanting Citrus After Borer and Sooty Mold Loss

Two 20-year-old citrus trees (lemon, mandarin) died: mandarin from sooty mold (insect honeydew), lemon from borers (hollow branches). Can we replant in the same spot in Victoria, Australia? Soil Risk Assessment Sooty mo

Slime Flux in Trees: Oozing Sap Attracts Flies and Bees

A tree in northern Ohio suddenly covered in flies and bees, with holes and missing bark. Kids climb it. Likely slime flux (wetwood) – a bacterial infection causing sap to ferment and ooze, attracting insects. Understandi

Rescuing Drought-Stressed Pine Trees in Texas

Two 2002-planted pines near San Antonio are turning yellow after severe drought. Intermittent watering hasnt prevented decline. Immediate Watering Protocol Apply 1 inch of water per session (use a pan under the sprinkle

Mushrooms at Maple Tree Base: Harmless or Hazard?

Large mushrooms and fungi appear on surface roots of two maples. Are they harmful to trees, pets, or humans? Interpretation Many fungi are saprophytic (decomposing dead organic matter) and not pathogenic. However, some i

Saving Thuja (Arborvitae) from Drought and Spider Mites

After a hot, dry summer, two three-year-old thuja trees are browning from bottom to top. Fear of spread to a 7-foot hedge. Two Primary Culprits Spider mites: Shake a branch over white paper; moving specks confirm mites.

Reviving a Declining Calamondin: Aphids and Plant Health

A 19-year-old potted calamondin shows drying, yellowing branch bases, leaf drop, and sticky brown substance on one branch. The cause: aphid infestation weakening the tree. Recovery Plan Control aphids with insecticidal

Yellowing Cycad Fronds After Transplant: Nutrient or Root Issue?

Two 13-year-old cycads were moved from raised beds to large pots five months ago. One now shows yellowing fronds from the inside out. No insects visible. Assessment This is likely an environmental or nutritional issue, n

Treating Leaf Spot on Lavender Twist Redbud in Humid Climates

A three-year-old Lavender Twist Redbud in East Texas shows brown, drying leaf edges and yellowing each year. No insects are visible. The diagnosis: fungal leaf spot, common in high-humidity regions. Treatment Protocol A

How Listeria Contaminates Cantaloupes and How to Stay Safe

Listeria outbreaks linked to cantaloupes raise concerns about how bacteria enter fruit. The primary route is surface contamination of the rind. When a knife cuts through the melon, it transfers bacteria from the exterior

Why Newly Planted Evergreens Turn Brown in Summer Heat

A row of evergreens planted last fall thrived until a sudden browning spread from one end. Three trees are fully brown, and the fourth is halfway there. Is it a disease moving down the row? Likely Cause: Heat and Drought

Saving a Dying Palm Tree: Identifying and Treating Trunk Rot

Our backyard palm tree is declining rapidly. The lower fronds turned yellow, then brown, and the base of the trunk appears wet with white, puffy growths resembling cocoons. Can this tree be saved? Diagnosis and Treatment

Outdoor Ficus benjamina Leaf Drop, White Powder on Bark: Root/Soil Stress, Likely Scale or Woolly Aphids—Nursery ID Needed

Symptoms 26-year-old, 20+ ft Ficus in San Diego: heavy leaf drop, white powdery spots on bark, splitting branches. Analysis Generalized yellowing = root/soil stress (water, root damage, not infectious). White powder = w

Basil Black Spots, Clear Film, Bamboo Yellowing: Overwatering, Annual Nature, Salt Buildup—Separate Fixes

Basil Issues Annuals—pinch blooms to prolong life. Black spots = fungus from wet leaves. Cut off, reduce water, increase sun. Clear film = spider mites or botrytis. Check undersides. House mold doesnt infect plants; pla

Marigold Wilt Not Responding to Dimethoate: Bacterial Wilt or Other Fungus—Try Neem, Then Replace

Marigold wilting despite insecticide Likely Cause Bacterial wilt (incurable) or other fungal disease. Dimethoate only kills mites/insects. Trial Spray Neem oil (available in India) — kills fungus, mites, insects. If no

Apple Tree Bark Separating from Trunk: Tree Dead or Dying—Check for Borers, Fire Blight, Contact Extension

Grim Sign Bark separated all around trunk = tree dead. Second tree showing same = likely same fate. Possible Causes Borers (small holes in bark). Fire blight (scorched leaves, rapid death). Extreme heat/drought. Waterlo

Marigold Virus (TSWV/INSV) in North India: No Cure—Discard, Control Thrips

Marigold with viral symptoms Diagnosis Symptoms match Tomato Spotted Wilt Virus (TSWV) or Impatiens Necrotic Spot Virus (INSV). Vector: thrips (tiny insects). Action Discard and replace plants—no cure. Control thrips o