The serissa s.,
is called, June Snow in China, because it wants to bloom around that time.
When you let it do as it wishes for May/June and prune back, thin out, it then redirects it's energy to
growing.
After some years [ say 1980 to now ] we moved away from the Japanese flora plena types, the varigaeta
,and the pink flowered as well,----------- for the simple Chinese type.
It presents a good bark, thickens [ saw 3 to 5 inch trunks in London] and has fine leaves.
For us flowering can be twice a year. The Chinese type rests by shorter days and is easy to train.
It is also a zone 7 shrub at around 8 feet+ in height.
As usual study - acclimation - where it is sold as an indoor shrub or tropical plant.
Additionally, lower the fertiliser where inducing flowering is concerned.
We use 1/3 strength Miracle Gro or Phostrogen lawn fertiliser.
Likes full sun as well.
The Japanese types also handled full sun as did the pinks etc.
Happy Trails
Good Day
Anthony