Magnolia Shrub Losing Trunks One by One: Root Rot Suspected

A Michigan magnolia bush (multi-trunk) loses trunks sequentially—leaves yellow and die on one trunk at a time. Two trunks lost over two years; a third now showing symptoms. Diagnosis: Progressive Root Rot Gradual, trunk-

Cycad Cone: Beautiful but Toxic

A 10-year-old cycad produces a circular cluster of bright orange, heart-shaped pods. The owner asks if this is normal. Normal Reproduction Yes. Cycads are gymnosperms; the orange structure is a female seed cone. It start

Episcia Leaf Spot: Bacterial or Physical Injury

An Episcia fimbriata Blue Heaven in a tropical country shows brown/black leaf patches with a narrow yellow halo. Watered every 2–3 days when medium is dry; placed near a window, no direct sun. Diagnosis The yellow halo s

Lilac Damaged by Hornets? Likely Secondary to Underlying Decline

A Virginia gardener reports Japanese hornets eating bark on a 15-year-old white lilac. Branches are dead, leaves have brown spots, hornets persist. Photos attached. Expert Insight Japanese hornets (Vespa mandarinia) are

Mealybugs on Hibiscus: Not Fungus, Treat with Horticultural Oil

A UK gardener sees feathery white clumps on hibiscus stems, thinking its fungus. Its actually mealybugs—soft-bodied scale insects covered in white wax. Identification Test Touch a cotton swab dipped in alcohol to the whi

Satsuma Fruit Splitting and Leaf Curl: Water and Leafminer

A Texas gardeners satsuma fruit splits and drops; new leaves curl. Tree is in full sun. Fruit Splitting Caused by irregular watering. If the tree is dry and then receives heavy rain (or sudden heavy irrigation), the frui

Bladder Gall Mites on Maple: Safe to Compost Leaves?

A maple has bladder gall mites (eriophyid mites causing pouch-like galls on leaves). The owner asks if fallen leaves can be composted without spreading mites. Mite Overwintering Most sources indicate mites overwinter in

Pineapple Plants Rotting in South Florida: Excess Rain the Culprit

A grower with 8 years of success suddenly sees pineapple plants rotting from the center out—yellowing, center pulls out, foul smell. 6 of 31 plants affected. Soil is topsoil and coarse sand; no fertilizer used. Diagnosis

White Spots on Aloe: Likely Fungal, Fix with Drier Conditions

An aloe plant has smooth, zebra-patterned white spots on leaves—no texture, no cottony residue. The plant otherwise looks healthy. Probable Cause: Fungal Infection Aloes are prone to fungal issues when overwatered or kep

Reviving a Bare-Root Ylang-Ylang That's Turning Brown

A Chicago gardener received a bare-root Ylang-Ylang (Cananga odorata) in peat moss, leafless with some dark branches. After potting and covering with a plastic bag for humidity, the stem rapidly turned dark brown and sof

Fruitless Mulberry Bark Peeling in Las Vegas: Sooty Canker Suspected

A Las Vegas homeowner sees bark peeling on a fruitless mulberry with minimal rainfall. The tree otherwise looks healthy. The expert suspects sooty canker (Hendersonula toruloidea), a fungal disease favored by high temper

Controlling Oleander Caterpillars on Desert Rose

A Central Florida gardener finds small, thin, orange caterpillars with black spines devouring desert rose plants. The caterpillars are likely the larvae of the oleander caterpillar moth (Syntomeida epilais), which seques

Saving Overwatered Desert Roses in Florida

Two 15-year-old desert roses (Adenium) in Tampa suffered after weeks of heavy rain. One has yellowing, dropping leaves; the other has a soft caudex, dying flowers, and dark spots on leaf undersides. The owner repotted on

Male Mulberry Decline in Arizona: Drought, Age, and Bark Loss

A 30–36 inch trunk male mulberry in southern Arizona (3500 ft elevation) shows vertical trunk cracks, bark peeling, and some dieback. One nearby mulberry already fell with rot at the base. Primary Suspect: Drought Stress

Dwarf Meyer Lemon Losing Leaves After Moving Indoors

A North Alabama gardener moved a potted Meyer lemon indoors when night temperatures hit the 40s–50s°F. Since then, leaves develop yellow spots and drop, though the tree has started flowering. Why the Leaf Drop? Citrus tr

Mysterious White Foamy Growth on Maple Trunk: Not Slime Flux

A homeowner sees a hard, white, foam-like substance 6–8 inches long on a maple trunk. Initially thought to be bacterial slime flux (wetwood), photos show its dry, hard, and strip-like—more like spray foam. Expert Assessm

Identifying Bark Nubs on a Jasmine Tree in South Florida

A South Florida gardener notices nubs on a jasmine tree that has stopped blooming and producing new growth for three months. Photos show small bumps on the bark. Likely Benign: Lichens The nubs are most likely lichens—a

Diagnosing a Declining Sunset Maple: Tar Spot, Drought, and Basal Wound

A 12–15 ft Sunset Maple, planted three years ago, shows circular black leaf spots, red scorched leaf edges, peeling bark at the base, and vertical trunk lines. The owner asks how to save it. Multiple Issues Identified T

Managing Root Rot in Apple Orchards: Drainage, Neem, and Mulch

An apple grower in Himachal Pradesh, India, seeks remedies for root rot. The expert response outlines a comprehensive, culturally focused strategy. Improve Soil Drainage First Excess moisture is the primary driver of roo

Controlling Oyster Scale on Mature Maple Trees

A homeowner struggles with persistent oyster scale on mature maples despite two spray treatments. The infestation remains, prompting a search for more effective solutions. Systemic Soil Treatment: A Better Approach Spray