By Whit
County Durham,
United Kingdom 
i am going to plant a Rosa banksiae lutea to cover an arch , what feed do i need when i plant it? thanks now for any answers
12 Sep, 2016
Answers
2.5 by 4 m. is a small Rosa banksia. the one at Chirk Castle must cover an area of at least three times that.
12 Sep, 2016
Between 2.4-4.0 metres wide is what I meant, Owdboggy, not 2.4 x 4. It gets 8-12 metres high, which I didn't mention!
12 Sep, 2016
And the one at Powys Castle is even bigger. And there are two clones, one of which does not flower and is always attacked by Mildew.
12 Sep, 2016
Just cultivate the area beforehand, incorporating some composted animal manure and then plant. I will say, though, this rose is not ideal for an arch because it gets 2.5 to 4 metres wide over time, so hopefully, your arch is more of a tunnel ...
12 Sep, 2016