For security, click here to clear your browsing session to remove customer data and shopping cart contents, and to start a new shopping session. 

Tractor Supply Co.

We Are Listening...

Say something like...

"Show me 4health dog food..."

You will be taken automatically
to your search results.

Please enable your microphone.

Your speech was not recognized

Click the microphone in the search bar to try again, or start typing your search term.

We are searching now

Your search results
will display momentarily...

Main Content
cattle deworming

Fall and Spring Cattle Deworming Guidelines

Deworming Guideline

Your cattle's health is important. The key to keeping them healthy is to deworm them regularly and at the right time of year. Strategic deworming involves developing a program based on your climate and parasite challenge. Keep your herd healthy with the following map and deworming guidelines.

The following map shows estimated period when parasite exposure first begins in the spring:

  • March 1 (Deep South)
  • March 1 - April 15 (Central)
  • April 15 - May 15 (North)

Fall Deworming Program

  • Deworm all cows, calves and bulls as soon as possible following the first killing frost or freeze. A killing frost is one severe enough to kill a tomato plant.
  • If your region has not received a killing frost or freeze by Thanksgiving, then proceed with fall deworming as soon as possible.

Spring Deworming Program

  • Determine the estimated period when parasite exposure first begins in the spring. (See map above)
  • Treat all cows, calves and bulls 6 weeks after parasite exposure begins.
  • A second treatment 12 weeks after parasite exposure begins may be necessary.


  • These are general deworming guidelines. Consult your local veterinarian if you have questions.
  • Some regions have varying parasite burdens and may require additional treatments throughout the year.