the act or process of reproducing plants by a division of roots or crowns.
Words nearby root division
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for root division
The plants will grow readily in any light soil, and are easily increased by root-division in the spring, or by seeds.
Aquatics are propagated by seed sown under water: many will allow of root-division.