Comment about a comment.
"For plants that spread by root or rhizome, planting in pots or planting rings can work to prevent spreading." IMO this should read:
For plants that spread ONLY by root or rhizome, planting in pots or planting rings can work to prevent AND REDUCE spreading.
Plants that produce fertile seeds will spread despite growing in pots or rings. One very good example is the yellow water iris (Iris pseudacorus). They are very good at spreading by their seeds and actually by many considered as a rampant and invasive species. Numerous other species are in the fertile seed category. Another example is the native white water lily that spreads by both fragmented rhizome (buds) and fertile seeds. Note IMO hybrid water lilies very rarely have fertile seeds that easily sprout new plants. Hybridized lilies could have infertile seeds?
How to hybridize water lilies - search
Water Lily Hybridization Kirk Strawn, PhD
Last edited by Bill Cody; 10/08/24 09:34 PM.
