What common weeds and perennial decorative plants spread and propagate quickly by pieces of roots left in the soil after weeding? (Item 8)

Common weeds like пырей, сныть, тысячелистник, подмаренник, and many valuable decorative plants such as ирисы, нивяник, ландыши, астры многолетние spread and propagate quickly by pieces of roots left in the soil after weeding. New shoots appear from these root pieces a few days after weeding.