“2,4-D” (short for 2,4-dichlorophenoxyacetic acid) is a widely used herbicide.

• It is used to kill broadleaf weeds (like dandelions) while leaving grasses (like lawns and cereal crops) mostly unharmed.
• It works by mimicking plant growth hormones (auxins), causing uncontrolled growth that kills the plant.

Key facts:

• One of the oldest and most commonly used herbicides in the world.
• Used in agriculture, lawns, and turf management.
• When used properly, it is considered low toxicity to humans, but it can be harmful if misused or in high exposure.

In short: it’s a selective weed-killer that targets broadleaf plants by disrupting their growth hormones.