There are a number of different habitats where you may be looking for worms. Some worm species prefer certain habitats over others, so knowing what type of habitat your sample comes from can help you to identify what type of worm it is and help to determine if there is anything unusual with your sample.

Forest: There are three types of forest that you may be taking your sample from. Deciduous forests are made up of trees with leaves. Coniferous forests are made up of trees with needles and cones. Mixed wood forests are made up of both kinds of trees.

Agriculture: Land where crops have been planted or livestock are grazing.

Meadow: Meadows have different kinds of grasses and only a few bushes and trees.

Shrub: Shrub land is land made up mainly of shrubs but may also include grasses, herbs and other small plants.

Source: https://en.wikipedia.org/wiki/File:Prince_Edward_County_Bird_Observatory_Scrubland.JPG

Lawn: Grass planted outside a home, school or other building that is cut short is commonly referred to as a lawn.

Garden/flower bed: A plot of earth, often with exposed soil, that has been prepared so that flowers, vegetables and/or plants can grow.

Wasteland: An unused area of land that is treeless and has sparse vegetation, mainly herbaceous plants.