Dr. Phyto

dumb cane

Dieffenbachia seguine

Diseases & pests on this plant

• bacterial blight of anthurium (aroids)Xanthomonas axonopodis pv. dieffenbachiae

  Water-soaked, translucent spots appear at the leaf margins and along veins, turning brown with a bright yellow halo and often a "V"-shaped dead wedge pointing inward from the edge; in systemic infection leaves yellow, the plant wilts and the stem/vascular tissue browns; a yellow bacterial ooze may show from cut tissue.

• bacterial soft rotPectobacterium carotovorum

  Water-soaked dark patches on bulbs/heads/tubers that quickly turn slimy + foul-smelling, complete liquefaction of internal tissue, characteristic strong fishy/sulphur odour from rotting tissue, infections spread rapidly in storage if not separated, conditions of warmth + moisture accelerate rot to whole-bin loss within days.

• overwatering / waterloggingabiotic_overwatering

  Yellow lower leaves, soft stem base, root rot signs.

• longtailed mealybugPseudococcus longispinus

  White cottony masses with long fluffy tails on twigs and fruit, copious honeydew, sooty mould blackening leaves, distorted fruit when calyx end infested.

• two-spotted spider miteTetranychus urticae

  Yellow stippling on upper leaf surface, fine webbing.