I asked my cuz...out yonder on the west coast and this was what he said.
Here in California it is used outdoors in warmer
zone 9/10 locations, and is
usually in full bloom from mid summer into December or January if planted in a
wind protected spot that gets reflected heat. It is a tropical vine, but is
said to be root hardy to 25F or so, but typically drops foliage in my garden by
January even without frost, and doesn't start
growing again until it warms up in
April. It will probably need very bright light to grow indoors/
greenhouse to
bloom, and as it is a rampant grower, I would suggest it is better in containers
for summer/fall display outdoors, and then wack it back and bring inside for
winter in
zone 8 locations. This vine is as vigorous in habit as Thunbergia
grandiflora, and seems to prefer similar
growing conditions to bloom. It is a
much more reliable bloomer in cooler summer conditions, as it doesn't need high
heat to perform well. I've seen it completely covering a 20 foot tall by 30
foot wide wall here in Berkeley, and simply co!
vered in bloom, for at least 9 months out of the year. It also does set some
small amount of
seed under our conditions, and is related to Pointsettias and
Euphorbias! It is probably also available mailorder from places like Kartuz
greenhouses in Vista, Calif, or as 1 and 5 gallons sized
plants at nurseries in
southern California, or special ordered from wholesale growers like San Marcos
Growers in Santa Barbara,(no mail order, retail sales, or shipping out of
state).
For me it has done pretty well as a container
plant in less than full sun in a
15 gallon container, but blooms more prolifically in full sun and more heat, and
is fairly drought tolerant once established,(in habitat in Costa Rica it grows
in seasonally winter dry deciduous forest, so is adapted to several months of no
rain in the cooler months).
And wants me to grow in a pot...ha ha.I'll cheat.I'll pot up for winter.lol