Garden pests

The nematodes ( or ; ; ), roundworms or eelworms constitute the phylum Nematoda. Species in the phylum inhabit a broad range of environments. Most species are free-living, feeding on microorganisms, but many are parasitic. Parasitic worms (helminths) are the cause of soil-transmitted helminthiases.

right|thumb|Weeds growing in the cracks of a concrete staircase (Epilobium roseum, [[Chelidonium majus, Oxalis corniculata, Plantago major)]]

decreased susceptibility of a pest population to a pesticide that was previously effective at controlling the pest

thumb|Several lines of molehills in the pasture. thumb|Trail of Mole (animal)|mole pass of molehills at [[Kasori Shell Mound, Chiba city]] A molehill (or mole-hill, mole mound) is a conical mound of loose soil raised by small burrowing mammals, including moles, but also similar animals such as mole-rats, and voles. The word is first recorded in the first half of the 15th century. Formerly, the hill was known as a 'wantitump', a word still in dialect use for centuries afterwards.

device used to monitor or reduce insect populations

weed that has been designated by an agricultural or other governing authority as a plant that is injurious to agricultural or horticultural crops, natural habitats or ecosystems, or humans or livestock