My husband and I found the columnar aspens to be less dense than we wanted ( especially when they are still young/ new) so we went with the Aspen clumps.
Basically they are still aspens but more spread out as each pot has what appears to be three trees (three branches) growing in a pot. We picked up three pots at Bluegrass at about 14 feet tall each and got immediate privacy from our neighbors (area that needed to be covered is about 8 to 9 feet).
If I'm not mistaken these trees grow wild here (parents in law have them at their acreage in Bearspaw) and grow extremely fast (around 3 to 6 feet a year). They are however nothing to look at in the winter when all the leaves fall off.
Current Line-up…
Honda S2000
FK8 Type R
OG Mercedes Benz
5th Gen T4R
Lexus RX 350
Ducati Streetfighter
Modded Honda Grom