Looking for some collective advice from those wiser than me please...
I have a wide border (1.5m wide by 12ft) in one part of my garden that is next to a fence. On the other side of the fence are some Leylandi which until next door caved and cut them to 8ft last month stood at 14ft. For this reason we had put membrane over the area and then bark chips over just to make the area look a bit tidier while we focused on other areas of the garden.
I'd now like to focus on this bit building up a perennial bed. The only issue is because of the trees next door the soil seems poor and very full of roots.
Are there any perennial plants which would thrive despite these conditions? Our garden is generally quite a foresty type garden lots of beautiful established trees but not much colour. Looking for all year interest but no orange or yellow flowers...don't know why but not a fan of them.
Have considered buddleija and have got a purple salvia I'd like to place there if feasible.
All ideas very gratefully received!