Purslane Speedwell, or Veronica peregrina, is a plant with a native range that includes parts of North, Central, and South America, as well as East Asia. Its introduced range extends vastly over multiple continents, including Europe, Asia, and Oceania, reflecting its adaptability to various climates and environments across these major regions.

Purslane Speedwell is native to the Americas and has been introduced to parts of Europe, Asia, and Africa. Certain subspecies are defined as invasive in parts of the United States, and it has been recorded as an agricultural weed. It grows as a weed throughout its native and introduced range, especially in disturbed areas including roadsides, gardens, and lawns. It spreads aggressively by seed and grows rapidly. It may be resistant to some herbicides, but other herbicides and hand pulling can be used to control weedy populations of purslane Speedwell. Further disturbance of the soil should be avoided to prevent the regrowth of purslane Speedwell.

The best season for removal of purslane Speedwell is spring, typically in April or May depending on your local climate. It's essential to remove this weed before it starts to produce seeds, as this would help in preventing any further spreading.