West Sussex,
United Kingdom 
Penstemon 'Dark Towers'
I bought this last week and am wondering where to position it. The foliage is a gorgeous dark red. I don't have any experience of penstemons so any advice would be appreciated.
18 May, 2019
Answers
The Gardeners World Website has info specific to Dark Towers too
18 May, 2019
Thank you both very much. I will certainly check out Gardeners World too.
20 May, 2019
full sun to partial shade ie half day in full sun the rest in light shade. I use a lot in a border that gets full sun until about 1pm then are in the shade of the house for the rest of the day.
its a nice cultivar.
18 May, 2019