David D Stretch writes
My 9 year old son, who is Chinese and up to 3 months ago had lived all
his life in Hunan Province, China, is missing being able to buy and eat
Dragon Fruit (Pitaya) in the UK, though I understand they can sometimes
be seen in shops.

Try
http://www.oakleaf-european.co.uk/featured/thailand.htm
They sell pitaya wholesale and have a on-line shop which doesn't include
pitaya, but invite you to email them if you want something in
particular.

We looked up information about them on the Internet,
and discovered that we have a chance of buying some seeds within the
UK, which he wants to do in order to try to grow them.

You may be able to find plants in a specialist cactus nursery - would be
quicker than going from seed. Perfectly possible to grow and flower here
under cover.

I've warned him it might be difficult, because of the size to which
they eventually grow, and also because we will have to grow them
completely indoors.

Best in a greenhouse - not only will they need the warmth, they'll need
good light too.

Keep them dry when temperatures are low over winter.

It's a long time since I grew one of these - have certainly achieved the
fruit but didn't eat it - it's rather decorative, and other cacti fruit
aren't that exciting - refreshing but not a particularly distinctive
flavour.


--
Kay