Seed grower produces Prairie mix

New Holland combines harvest delicate grass seeds

Long before the rich soil in Iowa produced tall cornfields, it produced tall grasses. Danny Allen is producing seed for indigenous tall grasses again in southern Iowa, along with wildflower seed. It is one of the largest such operations in North America.

“We grow about six or seven different native grasses on about 1,800 acres,” says the owner-operator of Allendan Seed, Inc., located in Madison County at Winterset, Iowa. “Then, we’ve got a couple hundred acres with maybe eight different native wildflowers in fields and another couple hundred acres with 80 or 90 species of indigenous material under plastic mulch and computerized irrigation.”

“The challenge is to think like a plant!”
Dan Allen


Dan Allen of Allendan Seeds in Winterset, Iowa, produces seed for indigenous tall grasses and native wildflowers. His is one of the largest such operations in North America.


The entire Allen family is involved in farming. Dan and his wife, Sonia, began farming in 1976 by growing traditional crops of corn and soybeans. They first tried their hand at growing native seed grasses in 1980. Today, the Allen’s four adult children each have their own independent farm and pool their machinery resources. “Between the five of us, there’s about 3,500 acres of row crops and about 400 acres of bluegrass sod,” Dan says.


Native seed grass

Dan recalls that his interest in native grass seed production began while he was in college. He put in about 15 acres in 1980 as a trial. It would take two years to produce seed, if things worked out.

At Allendan Seeds, wildflower seed is harvested by hand, while grass seed is harvested with New Holland combines.

“Circumstances were right,” he says. “I found a market for it. Then, the Conservation Reserve Program (CRP) started in 1985. The CRP really fell in line with what we were doing.” (The CRP is a Federal program that encourages conversion of highly erodible cropland or other environmentally sensitive acreage to vegetative cover, such as tame or native grasses, wildlife plantings, trees, filter strips, or buffers.) The Allen’s farm grew, their native seed business grew, and their family grew. In 1994, Dan and Sonia sold off their last cattle. In 1998, they got out of the hog business and expanded the native seed business.

During the expansion, they bumped production about four-fold to the current level, brought in a large, old foundation seed corn dryer from De Kalb, Illinois, and upgraded to a New Holland TR™89 combine.


Grass & wildflowers

“The challenge is to think like a plant!” Dan says, referring to his grass and wildflower business. “Most of these are perennials. It takes two years-- sometimes three years -- to get the first seed crop and, in most cases, nobody has done it before.”

The family works together to solve the mystery of gaining seed production from each species they produce. Dan says, “Each type of plant responds to a totally unique set of environmental stimuli. Our challenge is to figure out what the plant wants to do, so it can re-seed.”

Seed from the wildflowers are harvested by hand, with up to 40 employees in the field on some days, while grass seed is harvested in the fall with New Holland Twin Rotor® combines.


Harvesting grass seed

In the mid-1980s, Dan purchased a New Holland TR™75 combine to handle the finer grass seed harvest requirements.

“Grass is a totally different crop. The TR is simple and efficient in design, and just facilitates what we do,” he says.

In 2002, Dan harvested the native grasses with two TR89 combines. He estimates they put about 600 hours on the single TR89 used for the 2001 harvest. The harvest starts in early September and takes a full three months.

The rotary combines have played key roles in growing the native grass business.

A specialized cleaning and air-drying system is used to process the delicate grass and flower seeds.


“Everything about them seems to work better than on any other combine,” Dan says. “They’re more adaptable. They’re pretty easy to adjust. The cylinders make material move through a lot easier and quicker. The cylinders have pegs that help take the wet trash through.”

He adds, “This material is so light and fluffy that some of it will just bridge over an auger. The auger in the TR hopper goes straight out. That material doesn’t have a chance to bridge over.”


In-line cleaning

Specialized cleaning and drying processes are necessary for the volume of seed Allendan Seed handles. They have a unique line for in-line cleaning of grass and flower seeds that was first used during the fall harvest in 2002. It is a $1.2 million facility.

“We need to clean pretty good volumes of material in a very short time so we can get it to market by January,” Dan says.


Seed market

(Left to right) Chad Allen, Kelly Hayes, Dan Allen, Angela Barker and Scott Allen.

The seed the Allens produce is sold throughout North America, often in 50-lb. bags to seed distributors and government departments. “We sell any amount, however we run a pretty large volume so the biggest end of our business is with large orders.”

A new conservation seed industry has come into its own since 1985, when the Conservation Reserve Program began. Allenden Seed’s main market isn’t an agricultural market or a garden market. In fact, says Dan, indigenous seed material is really supplying a “movement” rather than a market.

“The movement on seed is toward putting government lands, roadsides and acres that aren’t involved in gardening or agriculture back into the native vegetation from which they came. Most of our material is indigenous to the tall grass Prairie, and that’s the main market for us.

“It’s expensive to do, but I think the political conscience today is trying to put that material back where it was, on lands that aren’t being used.”


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