Tomato Wilt Diseases: Fusarium, Verticillium, Bacterial, and Southern Blight

Sorting Out the Wilts Losing all tomatoes to wilt with brown vascular streaking in western NC suggests bacterial wilt (Ralstonia solanacearum)—not Fusarium/Verticillium, since resistant varieties (Better Boy, Early Girl)

Fig Tree Leaf Yellowing and Drop: Rust Disease in Humid Conditions

Recognizing Fig Rust A potted fig with vigorous growth but sudden lower leaf yellowing and drop after 2 weeks indicates fig rust (Cerotelium fici)—a fungal disease triggered by humidity, rain, or overhead watering. Its c

River Birch Slime Flux: Insects, Odor, and Management

Diagnosing the Spectacle Flies, wasps, and hornets swarming a river birch with a blistering, milky, pungent trunk wound indicates classic slime flux (wetwood). Bacterial fermentation produces gas pressure, forcing sap th

Lilac White Coating: Powdery Mildew or Cottony Scale?

Distinguishing the Two White powdery coating on lilac branches that rubbed off on a dog is unlikely powdery mildew (which doesnt transfer in clumps). This suggests cottony scale (Pulvinaria spp.)—insects producing white

Lilac and Catalpa Leaf Curl in Montreal: Heat, Pests, or Herbicide?

Investigating the Cause Simultaneous leaf curling on mature lilacs and catalpa in Montreal—with ash unaffected—suggests a shared environmental or chemical stressor. Lawn service treatment (even without pesticides) may in

Sago Palm Scale: Black Growths on Fronds and Organic Control

Identifying the Infestation Raised black hard growths on sago palm (Cycas revoluta) frond undersides that persist despite alcohol wiping are scale insects—likely Asian cycad scale (Aulacaspis yasumatsui) or similar armor

Weeping Cherry Sap Ooze After String Girdling: Bacterial Infection Management

Understanding the Damage A string left around a weeping cherry trunk until it embedded in bark caused girdling injury. The resulting sap ooze, worsened after string removal, with browning leaves, suggests bacterial infec

Viburnum Leaf Curl and Sticky Webbing: Mite or Scale Infestation

Decoding the Symptoms Viburnum carlesii with chronically curled, shriveled leaves, brown spots on undersides, and sticky white cobwebby growth over three years indicates a persistent sap-feeding pest complex: spider mite

Hydrangea Scale Infestation: White Clusters on Leaf Undersides

Identifying the Pest Tiny white clusters on hydrangea leaf undersides—especially if stationary and slightly raised—are scale insects (likely cottony or soft scale). They suck sap, weakening the plant and excreting honeyd

Red Maple Bark Decay and Borers: Emergency Intervention

Diagnosing the Damage A young red maple with a large decayed bark patch exposing wood, active insect boring, and progressive worsening since last summer faces a dual threat: cambial death from decay and borer infestation

Autumn Blaze Maple Decline: Bark Peeling, Sap Ooze, and Split Trunk

Assessing a Tree in Crisis A 3-year-old Autumn Blaze maple with black basal sap, peeling bark exposing white fungal growth, premature fall color, dead top branches, and a prior wind-split trunk is likely dying. The bark

Saving a Construction-Damaged Maple: Skip the $500 Service, Do This Instead

Rock Trucks Crushed the Roots — Now the Maple Is Dying Repeated heavy loads over the root zone (4–5 ft from trunk) compacted soil, crushed roots, and cut off oxygen/water. Result: early leaf drop last year, only 2 live b

Sand Cherry and Weeping Cherry Leaf Damage: Night-Feeding Pests

Identifying the Invisible Leaf Eaters Holes in sand cherry and ornamental cherry leaves with no visible insects point to nocturnal feeders: slugs, snails, or earwigs. They hide in mulch/soil by day, emerging at night to

October Glory Maple Transplant Shock in El Paso: Recovery Guide

Why Leaves Suddenly Dropped A 3-month-old October Glory maple in El Paso losing all leaves after darkening and burning is classic transplant shock compounded by abrupt weather shift—cool/rainy planting followed by sudden

Curly Willow Sucker Management: Why Wrapping Fails and Pruning Works

Understanding Sucker Proliferation A wind-bent curly willow trunk covered in basal suckers signals stress-induced compensatory growth. The tree is attempting to replace lost canopy function. Suckers arise from latent bud

Snake Plant Brown Spots: Water, Light, and Care Adjustments

Diagnosing the Problem A spreading brown spot on a snake plant (Sansevieria) leaf—despite no overwatering—suggests either excessive direct sun or residual moisture issues. These succulents thrive in bright indirect light

Skeletonized Maple Leaves: Insect Identification and Systemic Control

Whats Eating the Leaf Tissue? Leaves reduced to lace-like skeletons on Norway maples near Chicago indicate leaf-feeding larvae or beetles—common culprits include Japanese beetles, rose chafers, sawfly larvae, or caterpil

Southern Blight in Vegetable Gardens: White Rubbery Soil Fungus

Identifying the Pathogen Small white, rubbery irregular pieces in garden soil near wilting tomatoes and zucchini indicate Southern blight (Sclerotium rolfsii). This fungus attacks at the soil line, girdling stems and cau

Maple Decline from Soil Compaction: Root Zone Recovery Plan

Diagnosing Construction Damage Repeated heavy truck traffic over the root zone (4–5 feet from trunk) has compacted soil, crushing fine roots and cutting off water/nutrient uptake. Symptoms—early leaf drop, sparse canopy,

Fruitless Mulberry with Mushrooms, Sap Leakage, and Trunk Cracks: Slime Flux Explained

Recognizing Slime Flux (Wetwood) Mushrooms at the base, sticky sap oozing from trunk cracks, and fissures 4–6 inches long on a 20-year-old fruitless mulberry in Oakley, CA, are classic signs of slime flux (wetwood)—a bac