Crown of thorns shows blackish web-like mold at stem base, spreading, killing plants. Bayer and neem failed. Roots look good, black trunk skin peels, green sap underneath.
Root/stem rot from persistent wet soil. Black peeling tissue with green sap underneath confirms overwatering damage.
Send close-up photo for confirmation. Ensure excellent drainage. Empty saucers within 15 minutes. Allow soil to dry between waterings. Remove affected plants to prevent spread.
White Fungus in Garden Bed: Harmless Decomposer or Threat?
Crown of Thorns in Southern Michigan: Not Winter-Hardy
Crown of Thorns Care in Houston: Not Below 40°F, Cactus Soil, Fertilize Monthly, No Direct Sun
Propagating Crown of Thorns (Euphorbia milii) from Cuttings
Unidentified Bonsai: Photo Required
Crown of Thorns Care: Refer to Houseplant Experts
Euphorbia milii 'Crown of Thorns Apache' – Strawberry-Red Flowers Year-Round
Magnolia Decline in Texas Drought: Root/Soil Issue Needing On-Site Diagnosis
Ash Tree Marginal Scorch: Root Stress, Not Disease
Outdoor Plant Chewing Damage: Pest ID Before Treatment
White Cottony Masses on Yew: Probably Scale Insects
Flowering Bamboo Decline: Revival Options Limited
Crown of Thorns Left in Freeze: Wait and See
Thai Crown of Thorns 'Valentine' (Euphorbia × lomi 'Valentine')
Copyright © www.100flowers.win Botanic Garden All Rights Reserved