I have 3 dieramas, none have ever flowered, but after the winter 2 are not looking very happy.
One is D. 'Balckbird' and the other in a different part of garden is D. 'Igneum'
Balckbird has never done well, but i was hoping Igneum would do well this year, however both have dried, goldy leaves and are showing little fresh green growth. What do they need?
The third, left to its own devices, seems Ok (D. 'Erectum')
All advice welcome, thanks