Remove all infected leaves as well as lower foliage, even if healthy.

If only a few scales have red markings, remove them, along with infected leaves and flowers.

Pruning out infected leaves will reduce chances of infection next year.

I trimmed some of the plants down and have removed the infected leaves, but still it spreads.

The ultrastructure of infected leaves showed a number of changes.

Remove the older and infected leaves from runner plants before setting.

Hand picking infected leaves is the recommended method of control.

Remove and destroy infected leaves as they fall, or at least before winter.

Later the infected leaves become twisted with ragged edges, and may eventually turn brown.

Severely infected leaves wither and may drop from the plant.