In message , Spider
writes
My Jasminum polyanthemum is planted outdoors, about 12' from the house
in London clay.
.....snip...
ut if you wait for flowers you
will be disappointed. I was! However, I am chuffed to find I can keep
a 'once-conservatory-only' plant growing outdoors.

I've got one that has been established outside here for about 8 years
and it is rarely out of flower. It knocks the spots off ordinary J.
officinale both in volume and frequency of flowering. It has run
along a wall and fence for about 15 feet and is approximately 8 feet
high. It produces a good flush of flower in March/April followed by
intermittent blooming through to July, another good flush follows in
early August with intermittent blooming to November. If the winds are
kind, there is usually a respectable show in early December. Here,
it's only enemies are cold winds from the north-east, which can burn
the flower buds, but there are always plenty more to follow.

Dave Poole
Torquay, Coastal South Devon UK
Winter min -2°C. Summer max 34°C.
Growing season: March - November