Comprehensive Sago Palm Care: Fungicide, Scale Control, Repotting, and Watering

Comprehensive Sago Palm Care: Fungicide, Scale Control, Repotting, and Watering 15-year-old sago palm: fronds yellowed, black spots, drooping. Repotted 5 months ago. Issues & Solutions ProblemSignsTreatment FungusYellow

Clarifying T.S.O. and S.O. Horticultural Oil Designations

Clarifying T.S.O. and S.O. Horticultural Oil Designations Grower asks difference between T.S.O. and S.O. oils. Need Clarification What do the letters stand for? Are they horticultural products? Please provide full names

Identifying Caterpillar-Like Pests on Meyer Lemon: Bt and Hand Removal

Identifying Caterpillar-Like Pests on Meyer Lemon: Bt and Hand Removal Meyer lemon leaves yellow. Owner picks off firm, green/yellow, 1/4-inch caterpillars that look like stem growth. Neem oil didnt work. The bug Iden

Apple Scab Fungicide Timing: Bloom Protection and Organic Options

Apple Scab Fungicide Timing: Bloom Protection and Organic Options When to spray fungicide for apple scab? Best pesticide for scab control? Timing Spray from bud swell until 30 days before harvest. Do NOT spray during bl

Recurring White Fungus on Potted Sambo Lemon: Organic Treatment with Atomic Grow

Recurring White Fungus on Potted Sambo Lemon: Organic Treatment with Atomic Grow Sambo lemon in original pot (since 2009) has soft white fungus recurring yearly. Fruits but fungus returns. Treatment Atomic Grow: 2 tbsp/

Post-Pruning Leaf Spots and Deformation on Meyer Lemon: Organic Brix-Boosting Treatment

Post-Pruning Leaf Spots and Deformation on Meyer Lemon: Organic Brix-Boosting Treatment Meyer lemon in Coachella Valley (low desert) was happy for years. Pruned bottom branches at bloom time. Now leaves have brown spots,

Lavender Decline in Tropical Climate: Phytophthora Risk, Watering, and Soil Mix Adjustments

Lavender Decline in Tropical Climate: Phytophthora Risk, Watering, and Soil Mix Adjustments Lavender in Pekanbaru, Indonesia (tropical rainforest, 23–30°C, 60–98% humidity) has grey young leaves. Copper fungicide didnt h

Borer Infestation in Holly: Bark Stripping, Pruning, and Insecticide Treatment

Borer Infestation in Holly: Bark Stripping, Pruning, and Insecticide Treatment Dragon Lady holly: bark stripping (not holes) causing slow decline. Not woodpeckers (no holes). Diagnosis: Borers Borers cause oozing holes,

Assessing Autumn Blaze Maple Survival: Scratch Test and Certified Arborist Referral

Assessing Autumn Blaze Maple Survival: Scratch Test and Certified Arborist Referral Autumn Blaze maple planted 2.5 yrs ago. 10–20% branches leafless this spring. Fall fertilizer treatment done. Owner wants to know if tre

Sooty Mold on Citrus: Controlling the Underlying Insect Infestation Safely

Sooty Mold on Citrus: Controlling the Underlying Insect Infestation Safely 10 lemon + 3 orange trees (25 yrs, Corfu, Greece). Leaves/fruit black, sticky. Grandchildren play in garden—need safe treatment. Diagnosis Sooty

Pin Oak Leaf Curling: Insect or Vascular Disease? Need for Close-Up Photos

Pin Oak Leaf Curling: Insect or Vascular Disease? Need for Close-Up Photos Pin oak leaves: vascular tissue engorged/brittle, leaves curl into dead balls. Tree otherwise healthy. Caught early. Need Photos Please send clos

Herbicide Damage to Cocoa Plum Hedge: Glyphosate Effects and Soil Health

Herbicide Damage to Cocoa Plum Hedge: Glyphosate Effects and Soil Health Cocoa plum hedge (healthy 2 weeks ago) has lower leaves yellowing/falling. Lawn service sprayed weed killer along hedge. Likely Culprit: Glyphosate

Bud Death on October Glory Maple: Cold Snap Damage and Internal Decay Check

Bud Death on October Glory Maple: Cold Snap Damage and Internal Decay Check 10-year-old October Glory maple: some branches had buds that died instead of opening. Foliage looks sparse. Full tree Dead buds Primary Ca

Combined Scale and Spider Mite Treatment for Holly with Neem and Horticultural Oil

Combined Scale and Spider Mite Treatment for Holly with Neem and Horticultural Oil Burford hollies in Nashville, TN sprayed with soapy water. One set has black mold stems and dying leaves. Owner asks about cutting to roo

Premature Fruit Ripening and Drop in Plum Trees: Environmental Causes

Premature Fruit Ripening and Drop in Plum Trees: Environmental Causes Two plum trees (2 years) fruit turns color early, stays small/hard, drops by late June. Leaves/bark healthy. Not Disease or Insects No holes, no rot,

Spider Mite Infestation on Cucumber: Organic Control with Neem

Spider Mite Infestation on Cucumber: Organic Control with Neem Cucumber plants turning yellow. Owner wants non-pesticide solution. Cucumber plant Diagnosis: Spider Mites Speckled yellowing = classic mite damage. Confi

Diagnosing Herbicide Injury on Rose of Sharon and Leaf Necrosis on Ornamental Pear

Diagnosing Herbicide Injury on Rose of Sharon and Leaf Necrosis on Ornamental Pear Nursery worker seeks diagnosis for two customer samples: Rose of Sharon Mature, healthy until now. Lower half leaves: narrowed, cupped,

Transplant Shock in Weeping Norway Spruce and Branch Viability Test for Tiger Eye Sumac

Transplant Shock in Weeping Norway Spruce and Branch Viability Test for Tiger Eye Sumac Weeping Norway spruce bought in poor condition (bare side, brown needles). After planting, wind storm caused needle drop. Tiger eye

Praying Mantis Egg Cases on Rhododendron: Beneficial Insect or Pest?

Praying Mantis Egg Cases on Rhododendron: Beneficial Insect or Pest? White, fist-sized growths on rhododendron limbs after bloom. Appear annually. Owner breaks them off. Likely Identity: Praying Mantis Oothecae Mantis eg

Sudden Leaf Curl and Fruit Loss in Barbados Cherry: Water, Herbicide, or Fertilizer?

Sudden Leaf Curl and Fruit Loss in Barbados Cherry: Water, Herbicide, or Fertilizer? 6–8 month old Barbados cherry (Acerola) was fruiting well. After a weeks vacation, leaves brown/curled, fruit gone. Trunk/branches stil