Texas Agricultural Extension Service
Texas A&M University System
College Station, Texas
Propagating plants is very easy and free. Instead of throwing the trimmings in the trash, make new plants that can be used for gifts or to Barter with. Your neighbors are also a good source for cuttings.
Check out the Texas Agricultural Extension Service link below for suggestions on how to propagate the plants in your yard to use to Barter with at the Swap.
http://aggie-horticulture.tamu.edu/archives/parsons/misc/asexualpropagation.html