Conium maculatum disturbed ground. It is used as a food plant by the larvae of some Lepidoptera species, including silver-ground carpet. The poison hemlock moth ("Agonopterix alstroemeriana") feeds on the plant during its larval stage. "A. alstroemeriana" has been widely used as a biological control agent for "C. maculatum". Poison hemlock flourishes in the spring, when most other forage is gone. All plant parts are poisonous, but once the plant is dried, the poison is greatly reduced, although not gone completely. The plant is poisonous to animals that graze on it. "Conium" contains the piperidine alkaloids coniine, N-methylconiine, conhydrine, pseudoconhydrine and gamma-coniceine
Nasturtium (genus) Nasturtium (genus) Nasturtium () is a genus of seven plant species in the family Brassicaceae (cabbage family), best known for the edible watercresses "Nasturtium microphyllum" ("Rorippa microphylla") and "Nasturtium officinale" ("R. nasturtium-aquaticum"). "Nasturtium" was previously synonymised with "Rorippa", but molecular evidence supports its maintenance as a distinct genus more closely related to "Cardamine" than to "Rorippa" "sensu stricto" (Al-Shehbaz & Price, 1998; Al-Shehbaz, Beilstein & Kellogg, 2006). Watercress or yellowcress is a common name for plants in this genus. These plants are related to garden cress and mustard, noteworthy for a peppery, tangy (pungent) flavor. The name Nasturtium comes from