Hi, I presume this is in a container, tuberous Tropaeolum species need deep containers, so maybe yours aren't deep enough, try feeding with a balanced liquid feed once a month, they do best in a loam based compost, such as j i number 2 with added fine grit, Derek.

Hi Derek

Its in a sunnier spot than last year the pot is quite big and deep , yes its in John inns no 2 and with added grit , what I didnt do is feed it thinking the soil had enough nutrients ....

thanks

Gg