hm thats really strange, I thought it would have an effect like girdling.
Girdling, eh?
Well, I did have to remove about a fifth of the stem for at least 20 cm length due to stem rot infection. Funny thing is that not all tops are like that...
The chirourgical treatment you see in the picture was applied in the beginning of September. Now it's double the length...
Orfeas