Oleander Hedge Decline: Yellowing Leaves and Brown Spots in Australia

An oleander hedge that was once lush and thick is now thinning, with leaves turning yellow, developing a mottled appearance, and showing brown marks before dropping. The owner suspects oleander leaf scorch, a fatal disea

Robellini Palm Care: Managing Dead Stalks and Transplanting in South Florida

Patricia from South Florida sought advice on two nursery-grown Robellini palms (pygmy date palms) that had been left too long in their containers. One had 4 stalks (2 green, 2 dead), the other 3 stalks (2 green, 1 dead).

Yucca Tree Cold Damage Assessment and Recovery Outlook

A gardener named Marion reported severe winter damage to her yucca tree (spelled Yukka in the query). All leaf clusters had dropped, leaving five bare trunks. Dark, wet patches at the base of trunks were oozing pinkish m

African Violet Botrytis Blight: Comprehensive Diagnosis and Recovery Plan

A gardener named Alfredo discovered rapid browning on his African violet leaves despite careful watering practices and no fertilizer or pesticide use. He submitted photos for diagnosis. African violet with advanced Bot

African Violet Botrytis Blight: Identification and Treatment

A concerned African violet grower submitted a photo showing concerning symptoms on their plant. The expert, Melissa, identified the issue as Botrytis blight—a common fungal disease in African violets. African violet sh

Hoya Plant Identification and Care: Slow Growth Solutions for Hoya Imperialis

A gardener named Alfredo sought help identifying a hoya plant and understanding its slow growth pattern. After confirming his shrub was Baphia nitida (Camwood), he turned his attention to a hoya that hadnt bloomed yet bu

Identifying and Managing Mysterious Greenhouse Fungus on Cork and Tree Fern Mounts

A greenhouse enthusiast reached out with a puzzling problem: strange brown blobs appearing on cork and tree fern mounts used for miniature epiphytes. The growth has two distinct stages—one resembling a moist, brown liver

Mini Rose (Kordana) Yellowing and Bud Blast: Light Deficiency

Patricias Valentines mini rose from Canada has yellowing leaf stems dropping, buds blackening behind the head. She snips them but decline continues. Cause: Insufficient Light Mini roses need much more sun than typical ho

Pine Tree Decline in Black Hills: Need On-Site Diagnosis

35-year-old gnarly pine on limestone shelf in SD suddenly declined over 2 years (top-down thinning). Vine removed a year ago, no recovery. Surrounding pines healthy. Investigation Steps Inspect for bark damage (trunk, r

Indoor Jasmine Decline: Botrytis from Cold Condensation

Nicoles jasmine in Slovakia declined after moving indoors for winter: reddish-brown stem circles, leaf drop, curling/wilting new growth. Roots healthy. Diagnosis: Botrytis Fungus triggered by cold, wet conditions. Even i

Flying Ants in Bradford Pear: Decay and Ant Bait

Flying ants emerged from mulch into Bradford pears; woodpeckers drilled holes. Orkin only treats exterior. Owner fears rot. Reality Check Ants exploit decayed wood from fungi entering bark wounds. Decay fungi dont kill l

Gloxinia Edema After Mealybug Treatment

Gloxinia had mealybugs, treated with white oil. Now leaves show brown spots (see photo). Expert suspects edema (oedema)—roots take up water faster than leaves transpire, cells burst. Causes & Fix Winter: low light, cool

Green Growth on Old Pecan Trees: Resurrection Fern or Lichens

Restoring old pecan orchards; trees have green mossy/ferny growth with leaves on it, covering limbs. Identification Resurrection fern (air fern)—epiphytic, harmless. Lichens—algae+fungus symbiosis; three forms (crustose

Potted Mandarin Leaf Curl: Leaf Miner or Aphids

Citrus in large pots: mandarin has leaf curl and suspected leaf miner. Expert distinguishes: Leaf miner: squiggly lines in curled leaves; cosmetic, not yield-reducing. Treat with horticultural oil or spinosad. Aphids: c

Queen Palm Black Trunk: Ganoderma Butt Rot Suspected

Jims established queen palm in Orlando has an 8-inch by 4-foot black trunk area but otherwise healthy canopy. Possible Ganoderma Blackening could be Ganoderma butt rot (fungus Ganoderma zonatum) entering through wounds.

Hoya Care Basics and Identification Offer

Alfredo bought two exotic hoyas with watermelon-scented flowers. Melissa gives general care: bright light (no hot sun), dry between waterings. Shell research specific ID from flower photo/scent after a trip. Hoya

Lucky Bamboo (Dracaena sanderiana) Yellowing: Water Quality

Nalins 9-month-old lucky bamboo (5 stalks in water) has 2 yellowing stalks. Water changed biweekly, roots trimmed. Fix Change water every 3–7 days (not 2 weeks). Clean pot thoroughly—remove white salt deposits. Remove y

Peach Tree Scale Infestation: Organic Option for Aging Trees

Kathleens 15-year-old dwarf peaches in NJ have heavy scale on branches/trunk, peeling bark. Oil spray last spring failed. She wonders if trees are too far gone. Lifespan & Hope Peaches live 15–20 years; may still have pr

Camellia 'Jury's Yellow' Sooty Mold: Same Insect Cause

Margarets Jurys Yellow camellia has wipeable black deposits on lower leaves and buds. Identical diagnosis: sooty mold from sap-feeding insects (aphids, whiteflies, scales, leafhoppers). Treatment Wash leaves (especially

Camellia Black Coating: Sooty Mold from Insects

Camellia leaves turning black with thick coating. Expert identifies sooty mold growing on honeydew from aphids, whiteflies, scales, or leafhoppers. Management Wash/wipe mold off leaves (doesnt penetrate tissue). Control