GardenWizzPlant Care Card

Rowans And Mountain Ashes

Sorbus · Tree

Hardiness
Position
Full sun, Partial shade
Height × Spread
20 m × —
Soil
moisture-retentive, humus-rich, well-drained soil; fertile, well-drained soil enriched with organic matter; Chalk Clay Loam Sand; Acid or Alkaline or Neutral pH
Flowering
May–June
Toxicity
Fruit are ornamental not to be eaten. Potentially harmful.

The Gardening Year

J
F
M
A
M
J
J
A
S
O
N
D
🪴 Plant out
🌸 In flower
✂️ Prune

Watch out for

Scab (Venturia/Fusicladium): Rake up fallen leaves in autumn to reduce overwintering spores and improve air circulation.

Fireblight (Erwinia amylovora): Prune out infected wood well below visible symptoms during dry weather and disinfect tools.

Aphids: Encourage natural predators like ladybirds or use a strong jet of water to dislodge them.

Powdery mildew: Avoid overhead watering and prune for good air circulation; apply sulphur-based fungicide if severe.

Slugs and snails: Use physical barriers like copper tape or lay down iron phosphate pellets to protect young plants.

Full guide: gardenwizz.com/plants/sorbus © GardenWizz — UK gardening encyclopedia