Extend Your Grazing Time With Seasonal Pastures

Planning different pastures with different grasses for cool and warm weather can keep animals grazing nutritious green grass longer.

by Rodney Wilson
PHOTO: Pete/Flickr

I always wanted a couple of cows.

My uncle raises cattle, and it’s a family joke that, when he can’t be found, he’s probably out talking to the cows. (It’s a joke only in the loosest sense—the humor lies in the fact that, nine times out of 10, this is exactly where he is.) I’d had a few conversations with the cows on the farm bordering my grandparents’ land when I was growing up; I knew they were good listeners, and their slow, dumb stare held a unique charm.

It was more than their conversational brilliance that made me long for a bovine presence in my life—I wanted buckets of fresh milk and grass-finished steak on the dining table whenever possible, and the distinct challenge of effectively pasturing large-scale ruminants was one I felt keen on mastering. So when my family of five moved to a central Kentucky farm with two empty horse pastures, the next step felt obvious: We drove a few hours south to pick up two black Dexters (the smallest non-miniature cattle breed), a pregnant cow and a steer for the freezer. Then we called the extension agency to meet with a guy about how to raise them.

Different Pastures

When our county agent, a kind and deeply well-informed man on whom we soon grew to rely, stepped out of the truck, he scanned the two pastures and said, “Very nice. You can have your cool pasture on this side and warm pasture over here.”

My wife and I were befuddled—of course we understood there were different kinds of grass, but different kinds of pasture? This lesson was the first of many we had yet to learn about grass-finishing cattle. In the end, we ended up selling our couple of cows, having learned the final lesson that we were better at pasturing pigs than cows, but not before getting a deep education in planning grass pastures for effective cattle farming.

The idea of having different pastures for different weather conditions is meant to keep cows eating grass as long as possible and minimize the need for hay, which, if you’re buying, can pose a considerable cost increase (maintaining heavy-use haying equipment can be pretty dear, too).

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What, When

Focus on seeding warm-weather grasses (C3 species) in one pasture during the waning days of winter to establish a grass crop for cows to enjoy during the summer months. A common approach is to toss it atop the snow, which melts and deposits seeds in the ground. Then start cows in your pasture with cool-weather grasses (C4 species) when spring has sprung and growth resumes. Rotate cattle into the warm-weather pasture when temperatures reach 70 to 95 degrees F—the grass should be ready then because you seeded earlier in the year.

Warm-weather grasses lose nutrients and eventually go dormant when temperatures drop between 40 and 75 degrees F, which is when you rotate the cows back into the pasture where you grow cool-weather grasses. And as summer offers you a great opportunity to treat and inspect the cool-weather pasture for bare or damaged spots that need attention, your pasture should be ready to go when the warm-weather growth starts to fall off.

Plan Ahead

Planning seasonal pastures is just one component of pasturing cattle, but it can keep cows growing effectively until the deep freeze pushes them on to hay. And keeping cows on pasture for as long as possible keeps farm costs low without sacrificing the animals’ comfort. Here’s a quick primer on what grasses go where in your cool- and warm-weather pasture arrangement.

Cool-weather grasses

  • Bluegrass: Winter hardy, tolerates frequent grazing
  • Bromegrass: Very drought tolerant
  • Fescue: Grows fast but can cause something known as “fescue poisoning”
  • Orchard grass: Notably tolerant of shade as well as heat
  • Perennial ryegrass: Germinates and establishes quickly
  • Timothy: Well-adapted to moist areas
  • Wheatgrass: Some are cool-weather varieties   

Warm-weather grasses

  • Bermudagrass:  Heat-tolerant to 110 degrees F
  • Blue grama: Short grass that grows well in loamy soils  
  • Buffalo grass: Blades are fine and curly
  • Indiangrass: Matures late in the warm-weather season
  • Pearl millet: Regrows well after grazing
  • Sudangrass: A relative of forage sorghum
  • Switchgrass: Can take as long as two years to establish

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