[tam]

Why pick one Mixed hedge means interest for a longer period and better for wildlife. You could plant 2/3 alternately if you want it to look organised otherwise just mix what you like!

[Greengirl]

No crocosmia aren't evergreen but the leaves look good for a long time & as tam says you could always mix another or more plant in to prolong the interest. Crocosmia & the white  & green variegated euonymus  looks lovely - it's a combination I have in my own garden.

[Roll Roll]

How about Sage??