Decision.

Ok, every pot's lowest row is ten stitches wide so this is how I'll do it: 10+24+24+(1+)1=(60)59.

Nasty part in this is that I've to frog that damn frame completely and re-stitch it, but on the other hand... only one frame to frog though.

Other option is to shrink frame width to 58 stitches, but I'm not sure would it look good with wider topiaries. Better to have some space around them.