Maple Tree Multiple Spot Syndrome: Insect, Fungus, and Algae Complex

Marys maples show white spots and larger black spots on leaves, greenish spots on trunks. Expert Differential Diagnosis Steve provided a rainbow of possibilities: White leaf spots: Likely scale insects (raised on surfa

Pine Tree Mortality Spread: Professional Diagnosis Urgently Needed

Swati has 20+ mature pines. One died completely (brown). Now adjacent pine has two brown branches, and a front-yard pine also affected. Disease appears to be spreading. Expert Response Steve listed multiple potential ca

Dwarf Meyer Lemon Graft Union Bark Splitting: Normal Aging or Problem?

Lisas 44-year-old potted Meyer lemon (Los Angeles, full sun, sprinkler 3x/week, deep water in heat) shows bark splitting/peeling at trunk diameter change point. Branches thinning/brittle. Hot humid spell preceded splitti

Lemon Tree Mysterious Decline: No Clear Pathogen, Focus on Cultural Care

Jims 8-month-old lemon tree blossomed twice, produced new leaves, then suddenly: new leaves stopped growing at emergence size, old leaves dying strangely (folding, yellow spots turning brown/rusty with holes). Photos pro

Japanese Maple Sunscald/Herbicide Damage: Environmental Stress Diagnosis

A Japanese maple shows half its leaves on one side parched, brown, and wilted while the other half looks healthy. Expert Diagnosis Steve identified likely environmental causes: Damaged side adjacent to building, sidewa

Remove Rotten Apples from Orchard to Reduce Disease

Yes—pick up and destroy (bury/burn) all rotten apples on ground and tree after harvest. Fungal pathogens overwinter on mummies and infect next years crop. Sanitation is a cornerstone of orchard disease management.

Powdery Mildew on Large Jasmine: Fungicide Options and Resistance Management

White spots on 10-ft jasmine = powdery mildew. As a former ag pest tech, you know the drill: obligate parasite, haustoria feed in epidermis, reduces photosynthesis, distorts leaves. Fungicide Rotation (Prevent Resistanc

Sick Palm Trees: Peroxide, Copper, or Organic Alternative

Palms treated with peroxide + copper fungicide + nutrition spray for 2 weeks with no visible change. Copper can accumulate to toxic levels. Alternative Atomic Grow (organic): spray into crown, down trunk, soil drench.

Orange Bumps on Oak Leaves in Florida: Likely Gall Insects

Oval, bumpy, orange 1/4-inch growths on oak leaves in Florida are almost certainly galls from tiny wasps. Cosmetic only—no harm to mature tree. Check Cut one open: egg/larva inside confirms gall. Rake fallen leaves; de

Camellia Bud Drop: Water, Light, Nutrients, or Mites

Camellia buds that stay small, wither, and fall = bud drop. Causes: Too much or too little water. Insufficient light. Extreme cold. Nutrient deficiency. Mite infestation (check inside buds). Petal blight (brown spots

Tanglefoot and Bird Issues: Not a Plant Disease

Tanglefoot is for trapping insects, not deterring birds. The smokebush mildew and orange ants are separate issues. If birds are damaging plants, check local Game & Fish regulations—many birds are protected. Search inter

Boston Fern Decline: Root-Bound and Overcrowded

Woolly feel, black new fronds, leaf drop on a 3–4 year pot-bound Boston fern = root congestion and poor drainage. Fix Repot: loosen or trim circling roots, use fresh well-drained mix. Thin excessive top growth. Water t

White Webbing on Robellini Palm Trunks: Post-Freeze Fungal Growth

Thick white webbing on trunks of cold-damaged Robellini palms (pygmy date palms) is likely fungal mycelium colonizing freeze-injured tissue—not insects. Options Fungicide sprays (copper, etc.). Organic: Atomic Grow (sp

Banana Plant in Pot: White Film, Brown Edges—Check Drainage and Pot Size

White film on banana leaves + brown edges on new growth in a covered lanai suggests: Standing water:15 min after watering, roots rot. Empty saucer or elevate pot. Low humidity: Mist leaves or group plants. Pot-bound: B

Mealybugs on Croton: Organic Control for Indoor Plants

Tiny white bugs + webs on croton = mealybugs. Soapy water gives temporary relief; they return because it washes off. Options Insecticidal soap (reapply weekly 3–4x). Neem oil (organic, systemic activity). Atomic Grow (

Bumps on Old Grape Vine Leaves: Phylloxera Galls

Bumps on grape leaves, whole vine affected, slight yellowing = likely grape phylloxera (aphid-like insect forming galls). Cut a gall open: hollow with eggs inside confirms it. Sanitation Rake and destroy all fallen gal

Lilac Bush Leaf Scorch After June Planting: Transplant Shock

Gray-brown, dried leaves on a lilac planted in June (hot, dry) are classic transplant shock—leaves developed in shade/nursery, then hit full sun. The plant bloomed and grew, so roots are working. Care Water consistentl

Bumpy Lime Fruit: Citrus Scab, Cosmetic Only

Pimple-like bumps with brown tips on lime fruit are citrus scab (Elsinoë fawcettii). Its a fungal disease favored by rain, but doesnt affect juice quality—only appearance. Management Copper fungicide sprays (traditiona

Brown Spots on Pelargonium 'Peppermint': Fungal from Overhead Watering

Brown areas on geranium leaves—not matching rust—are likely fungal (Alternaria, Botrytis) promoted by wet foliage from overhead watering or poor ventilation. Cultural Correction Water at soil level only; no sprinklers.

Repeated Sky Pencil Holly Death in One Spot: Soil Issue Likely

Multiple Sky Pencil hollies dying in the same sandy spot—while others nearby thrive—points to a soil/environment problem, not a disease. Grayish lower foliage suggests root stress. Investigate Soil test via county exte