The thing that bothers me about a soap solution is that these leaves are curled
up, almost like a small cocoon. The soap spray would have to actually land on
the underside of these leaves to do their job.

I gave it a second soapy drenching last night, so we'll see. The
leaves are definitely 'cocooned' but I was pretty vigorous in my
spraying, so hopefully I'm OK. If it doesn't work I'll give the
chemicals a try.

Cheers,
Geoff Glave
Vancouver, Canada