The best replacement for edging is ballooning.

The best alternatives to edging are rated as following:
★★★★★  ballooning
★★  trenching
★  no edging
★  stone edging
★  trimming
  no lawn edging

Your alternative for edging is not listed? Suggest!
Speaking about edging, one probably shouldn't forget about pavers.

Other search terms related to edging and their ratings are:
★★★★★ pavers
★★★ gravel
mulch
You have in mind a companion for edging and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of edging in all years. Click on graph for more.
edging
ballooning
trenching