By Squelch
United Kingdom 
should the flower stalk be cut off after flowering has finished on a strelitzia regina
On plant
Strelitzia reginae
4 Mar, 2012
Answers
As above!
In about three years you may well be splitting your plant with a spade, so seed would be of little use to you anyway.
4 Mar, 2012
Unless you want them to form seed, I would cut them off,
it makes the plant look tidier, and it may flower again for you.
4 Mar, 2012