A notoriously poisonous plant, hemlock produces umbrella-like clusters of white flowers in summer. It can be found in damp places, such as ditches, riverbanks and waste ground.

A scrambling 'weed' of waste ground, fields and gardens, Common fumitory can be found on dry and disturbed soils. Its pink flowers appear over spring and summer.

With its familiar features, the Field pansy is a delicate version of a garden favourite. Usually creamy-yellow in colour, it can be seen in fields and on roadside verges and waste ground.

Look for common toadflax on waste ground and grassland, and along roadside verges and hedgerows. Its yellow-and-orange flowers are tightly packed on a tall spike and have distinctive 'spurs…

Despite its name, Common knotgrass is not a grass, but is actually related to the docks. It has wiry stems that grow along the ground, and is a weed of waste ground, gardens and arable fields.

Once considered a weed of cornfields, the cornflower was nearly wiped out by intensive agricultural practices. Today, it can be found in deliberately seeded areas, and on roadside verges and waste…

Groundsel is a 'weed' of cultivated and disturbed ground like field edges, roadside verges and waste ground. It has clusters of yellow flowers that turn fluffy and white as the plant…

A tall plant, Rosebay willowherb is a successful coloniser; it can form dense stands of bright pink flower spikes on disturbed ground, such as woodland clearings, verges and waste ground.

Timothy is a grass of meadows, arable land, waste ground and roadside verges. It is also cultivated as fodder for livestock. Look for slender stems and long, cylindrical flower spikes in summer.…

Once considered a weed of cornfields, the common poppy is now in decline due to intensive agricultural practices. It can be found in seeded areas, on roadside verges and waste ground, and in field…