Norfolk Island Pine Indoor Decline: Lower Branch Browning Causes

Diagnosing Bottom-Up Browning on Norfolk Pine A 3-foot Norfolk Island pine (Araucaria heterophylla) with healthy new top growth but browning, dropping lower branches after an office move is experiencing environmental str

Oakleaf Holly Transplant Shock: Leaf Drop After Spring Planting

Why Newly Planted Oakleaf Hollies Drop Leaves Eight oakleaf hollies (Ilex Conaf) planted in full sun this spring, now dropping brown but unspotted leaves in early summer, are exhibiting classic transplant shock—not disea

Indoor Palm Sticky Leaves: Scale Insects and Organic Solutions

Solving Sticky Palm Syndrome A royal palm (Roystonea spp.) on a sun porch with sticky leaves almost certainly has scale insects or mealybugs—sap-feeders that excrete honeydew. The fact that other palms nearby are unaffec

Sunset Maple Decline: Premature Color, Leaf Spots, and Trunk Issues

Diagnosing Stress in a Young Sunset Maple A sunset maple (Acer rubrum Sunset) showing premature fall color, leaf spots, and black trunk spots after a cool, wet spring and recent fertilization is signaling significant str

Chinese Pistache Stress: Sap Flow, Bark Splitting, and Structural Concerns

Analyzing Sap Flow and Bark Damage on Chinese Pistache A mature Chinese pistache (Pistacia chinensis) showing sap flow from bark openings on a major limb, with associated foliage decline, signals a structural or vascular

Mature Weeping Cherry Decline: Sap, Borers, Cankers, and Winter Injury

Diagnosing a 20-Year-Old Weeping Cherry in Distress A weeping cherry (Prunus subhirtella Pendula) showing thick spring sap, yellowing leaves, and branch dieback after a snowy winter and wet spring faces several serious p

Tulip Tree White Spots and Sticky Leaves: Lichens, Honeydew, and Insect Control

Decoding Tulip Tree Symptoms A tulip tree (Liriodendron tulipifera) with white fuzzy spots on bark and sticky leaves attracting insects presents two separate issues: a harmless bark organism and an insect-driven honeydew

Patio Peach Tree Sudden Decline: Sap Blobs, Leaf Drop, and Canker Risks

Emergency Diagnosis for Young Peach Tree Collapse A 2-year-old patio peach tree dropping leaves rapidly with clear glue blobs on the trunk signals serious distress. The hardened sap (gumming) is the trees response to inj

Indian Bean Tree (Catalpa) One-Sided Dieback: Borers or Branch Damage?

Diagnosing One-Sided Leaf Browning on Catalpa When an Indian bean tree (Catalpa speciosa) shows complete browning on one side while the other remains healthy, the cause is typically localized vascular disruption rather t

Brown Turkey Fig Troubles: Woolly Aphids, Leaf Browning, and Nandina Issues

Container Fig Care: Addressing Multiple Problems Brown Turkey figs in containers face unique challenges. After treating woolly aphids with soapy water, one tree shows leaf browning and fruit shriveling—while its companio

Thuja (Arborvitae) Browning After Planting: Transplant Shock or Water Stress?

Why Newly Planted Thuja Trees Turn Brown Browning or yellowing tips on recently planted Thuja (arborvitae) trees—especially within the first month—typically indicate transplant shock or water management issues, not infec

Diagnosing Black Dots and Resin on Young Tree Leaves

Mystery Symptoms: Black Dots and Sticky Resin Small black dots on leaves accompanied by a resinous substance suggest several possibilities, but accurate identification requires visual confirmation. The description points

Saving Basil from Whiteflies: Organic Control and Care Tips

Identifying Whitefly Infestation on Basil Those tiny white bugs crawling on your basil, coupled with pale yellow spots on leaf undersides that scrape off easily, are classic signs of whiteflies—not to be confused with fu

Reviving Honeysuckle Trumpet Vines: Identifying and Treating Common Pests and Diseases

Diagnosing Problems with Honeysuckle Trumpet Vines Honeysuckle trumpet vines (Lonicera sempervirens) are generally vigorous climbers, but they can fall prey to several pests and diseases that cause yellowing leaves, whit

Old Cherry Tree Dead Leaves and Holes: Fire Blight—Prune, Spray, Remove Moss

50-year-old cherry: dead leaf clumps hanging, all green leaves holey, green moss on trunk/branches. Diagnosis: Fire Blight Bacterial disease (apple family: cherry, pear, rose, photinia). Leaves look burned. Moss/lichens

Rose of Sharon Trunk Lichens and Bark Split: Not the Primary Problem

Blue-green moss-like growth on trunk = lichens (harmless, indicate decline). Bark split at ground level likely from internal decay, injury, or weather—not lichens. What Not to Do Tree wrap—harbors insects, limited value

Old Lilac Heavy Scale Infestation: Dormant Oil and Summer Insecticide

20-year-old lilac with gray scales on main branches, dying limbs. Control Prune heavily infested branches. Dormant oil spray in winter (before bud break, dry, 48 hrs before frost) on all nearby shrubs. Now (post-bloom):

Autumn Blaze Maple with Scale Insects: Do Not Buy, Plant in Fall

16-ft Autumn Blaze maple at nursery has white marshmallow-like growths on upper branches (likely scale insects). Owner called them “pimples.” Advice Do not buy a tree with scale infestation. Do not plant now (summer hea

Mature Pistachio Trees Oozing Sap in Heat: Unusual Symptom—Contact Extension

18–20-year-old pistachios oozing sap from limbs (no injury) in 100–105°F heat. Not matching known US pathogens/pests. Action Contact county Extension office (NM) for local expertise. They may visit or accept samples. Of

Flowering Plum After Hard Freeze: Scratch Test for Life

35-year-old flowering plum in West TX froze at -6°F in Jan. Bloomed April, now leaves fallen, remaining brittle/dry/pitted, branches snap by hand. Check for Life Scrape bark on upper outer twigs: green = alive, brown = d