Has anyone any advise or insights into why my two year old Penstemon haven't flowered? I'm in SE and it's been a long hot summer but I've kept them watered and they have good sunlight with some dappled shade in the afternoon
As I only moved here two years ago I really can't recall if they flowered last year as I bought them as plug plants in 2021
I've grown these successfully for many years in my previous house, taking cuttings each year in case they died over winter
Oh and I've given them a couple of feeds. The plants are big and healthy looking just no flowers