How to Control Ragweed Keep ragweed from taking over your yard by fertilizing, mowing regularly, keeping the flower beds maintained, and clearing out the weeds. Control ragweed already in your yard by pulling it out by hand.

If you do graze heavily or cut hay, spraying herbicides like 2,4-D or Grazon or Curtail or Weedmaster after grazing or cutting gives good control of ragweed seedlings and small plants. And if ragweed gets away, shredding in September can reduce seed production. It takes time, and a well-planned approach, to control ragweed in pastures.

Contact with the pollen can cause dermatitis, so wear protective clothing when removing it. The easiest way to kill ragweed is to mow it regularly every three weeks. This will eventually deprive the roots of nutrients. If you decide to dig the plants by hand, take care to remove them before they’re able to flower.

As with most annuals, ragweed control is possible by focusing on preventing the germination of new seed each year. Not disturbing the soil is one strategy. The less you till or dig, the fewer buried ragweed seeds will be brought to the surface. The vast majority of ragweed seeds sprout from the top inch of soil.

Our top recommendation for treating both Common and Giant Ragweed is 2,4-D Amine Selective Weed Killer. Apply when the Ragweed is young and active growing for the best results. Preventing Ragweed Reinfestation You can prevent Ragweed with regular lawn maintenance practices like fertilizing your lawn and mowing on a regular basis.