Canna 'Pacific Beauty' problems — and how to fix them

Rolled, brown-edged leaves indicate caterpillar activity. Unroll and remove larvae by hand; Bt is effective applied to young caterpillars.

White fungal coating on leaves in warm, dry conditions with cool nights. Improve air circulation and apply a potassium bicarbonate spray.

Rhizomes rot if stored too wet. Allow to cure and dry after lifting before storing in barely damp peat or vermiculite.

Damage emerging shoots in spring. Apply iron phosphate pellets around plants when growth first appears.

Compact but can be destabilised in windy spots; stake if needed or position near a sheltered wall.