Dr. Phyto

common oregano

Origanum vulgare

Diseases & pests on this plant

• Pythium damping-off + root rot (multi-host)Pythium ultimum

  Seedlings rot at soil line + collapse (damping-off), brown mushy roots when plants pulled up, plants stunted + yellow despite watering, sudden plant collapse during stress periods, foul earthy smell from rotted tissue.

• powdery mildew (ornamentals)Golovinomyces sp.

  A white-to-grey powdery coating spreads over the upper leaf surface, shoots and flower buds; under it the tissue yellows, and young leaves may pucker, curl or be stunted; severe attacks brown and shrivel the leaves. Unlike downy mildew the growth is on the UPPER surface and rubs off; worst in warm days with cool, humid nights and crowded, shaded plants.

• grey mould (Botrytis)Botrytis cinerea

  Fuzzy grey mould on leaves and stems.

• sclerotinia stem rotSclerotinia sclerotiorum

  White cottony growth on stems at flowering height, stems split open to show black sclerotia (1–5 mm) embedded in pith, premature ripening of affected plants.