Hello everyone,
I would like to ask you for a help on pruning my plumeria. It is 1 m high, 3-year old plant which has not been pruned yet. The spring is coming so I think this is the best time to cut the branches off. Do you think I could cut the main stem in the half and prune the branches (yellow lines) or is it too stresfull "operation" so pruning the branches only (blue lines) will do the job?
Many thanks for any comments.
Bart

Bart; I like the shape of your Plumeria as-is & would resist pruning... Imaging all the Beautiful flowers you'll be sacrificing. ps. Is that a Private Greenhouse? it looks huge.

If only It is a glasshouse at my work, I am plant geneticist. Yes, I will also pity the flowers which will not have chance to appear but the plant is getting really big. For it is not frost tolerant, I have to keep it at glasshouse during winter. I cannot imagine how big the plant will be in few years...
Thanks for your comment.
Bart

They are trees, so they can get very large! I just would not prune it until it's necessary.

If you don't mind saying, where are you located? That looks like a wonderful greenhouse. Can you tell us about the plants in the glasshouse, and what sort of work you do?

I agree with Glenn, but if you were to prune, I would wait maybe just another month until you see new growth starting. That is the best time to root the cuttings.
Maybe trim the bottom section a bit lower, so the plant will make new branches lower down and then maybe you won't have to prune it for a few years.

@Dutchlady1 - so you would trim the trunk in half? I wasn´t sure if I could get new branches on the remaining stem in the pot.
@plantmanager - I know they are trees but I would like to keep it in the pot I cannot allow it to become a tree.
I study the genes controlling flowering time in wheat. We have got mainly wheat, barley and some grasses in the glasshouse. One section is dedicated to bananas.
Located in the Czech Republic.
Thanks for you suggestions and comments.
Bart

@Bartolomej - I would cut the trunk lower than where you draw the yellow line, about where the slightly transparent green tie is. It will generally resprout branches from the old leaf scars.
In case you wonder whether an older, hard wood trunk will still be able to sprout branches, I will show you this picture. It was one of the biggest Miami Rose trees in Southwest Florida (that I know of) which was cut down to allow construction. It refuses to die!!