Mandala Crafts Long Stainless Steel Aquascape Tool Kit for Saltwater Freshwater Aquarium Plant Trimming, Fish Tanks, Terrariums (Stainless Steel Wave Scissors) https://www.amazon.com/dp/B074WFT53B/ref=cm_sw_r_cp_api_glt_fabc_CD2HHX30DKM16ZY8977B?_encoding=UTF8&psc=1
These are the scissors I have. I wish I could remember who suggested them.
Mandala Crafts Long Stainless Steel Aquascape Tool Kit for Saltwater Freshwater Aquarium Plant Trimming, Fish Tanks, Terrariums (Stainless Steel Wave Scissors) https://smile.amazon.com/dp/B074WFT53B/ref=cm_sw_r_apan_glt_fabc_D925SSCZ54NTSSZYD4HN?_encoding=UTF8&psc=1
I've found that cutting doesnt shock the colony as much as ripping out a bunch of substrate with them.
It's also much easier not having to clean up a bunch of dirt after they're harvested.
I use one of these.
Even better in my experience:
Curved craft scissors. https://www.amazon.com/dp/B074WFT53B/ref=cm_sw_r_apan_glt_i_M6ZTGY1PBZTJCJJ5A1GG?_encoding=UTF8&psc=1
Check these snips out.
https://www.amazon.com/Mandala-Crafts-Stainless-Aquarium-Aquascape/dp/B074WFT53B
I prefer these. Mows through a shoebox canopy in no time.