Research team develops trademarked line of native seeds, plants
There is a rule of thumb among native plant growers: The first year, it sleeps. The second, it creeps. And the third year, it leaps.
Reintroducing native varieties takes time, but the effort pays off handsomely. Once these long-lived plants are established, they杏吧专区檙e essentially maintenance free. They don杏吧专区檛 require fertilizer, because they杏吧专区檙e adapted to native soils. And they don杏吧专区檛 require pesticides, because they杏吧专区檙e adapted to native insects. They杏吧专区檙e almost impervious to drought and can even survive fire.
Some researchers at the 杏吧专区杏吧专区檚 Ecology Center have been working to preserve and propagate native plants since 2007.
This year, they launched a commercial initiative: PureNative鈩 seed mixes, specialized blends of seeds from plants that are native to south Louisiana.
The center sells PureNative鈩 plants and intends to create seven seed mixtures:
- Wetlands Habitat;
- Wildlife Support;
- Rancher杏吧专区檚 Grasses;
- Pollinator Attraction - Urban;
- Pollinator Attraction - Agriculture;
- Urban Landscaping - Color; and
- Urban Landscaping - Pond.
杏吧专区淲e杏吧专区檝e not only been collecting seeds and growing plants, we杏吧专区檝e been studying the properties of individual species,杏吧专区 said Andre Daugereaux, manager of the Ecology Center.
Grasses are especially appealing to farmers and ranchers because they require little or no maintenance and provide nutritious grazing food for livestock. Native plants can reduce erosion and improve soil and water quality. Some of the plants are attractive to insects and birds that pollinate crops.
Native plants are used in restoration projects or along highways. Hunters use the plants to create habitat, especially for birds. And some varieties, including grasses and flowers, are used in ornamental landscaping.
Dr. Susan Mopper, a 杏吧专区 biology professor and director of the Center, said the plants are a valuable resource. 杏吧专区淎griculture and development, over a long period of time, have significantly diminished native habitat,杏吧专区 she said.
Acadiana lies at the edge of the Gulf Coast prairie, which extends into Texas. Tallgrass prairie once covered more than nine million acres; less than 0.1 percent remains. In Louisiana, only about 200 acres are left, mostly in remnants found on narrow strips of land along railroad tracks. The former rights-of-way were never converted to farmland, so native plants still grow there. Some private landowners allow researchers and volunteers to collect seeds on those patches of prairie.
Larry Allain is a botanist at the National Wetlands Research Center and an expert on native plants. He杏吧专区檚 also a UL Lafayette alumnus who has helped to establish several prairie restorations sites in Acadiana, collected seed on prairie remnants and established plantings at the Ecology Center.
杏吧专区淓ven though we杏吧专区檝e put some effort into re-creating these patches of prairie, it seems we can杏吧专区檛 compete with Mother Nature when it comes to diversity. These prairie restorations are just a facsimile of the real thing. They don杏吧专区檛 seem to function like native prairie,杏吧专区 he said.
On a remnant, there may be as many as 30 species growing together. On a re-created prairie, only two or three may thrive. 杏吧专区淲e don杏吧专区檛 yet understand how nature can pack so many different plants into a small area,杏吧专区 he explained.
These native plants杏吧专区 growing habits make it challenging to harvest seed.
Commercial crops are planted as single crops, in rows, so they can be harvested with specialized equipment. But the prairie plants are part of an ecosystem, with dozens of intertwined varieties that mature and bloom at different times. So seed must be collected by hand.
杏吧专区淭here杏吧专区檚 a lot we still don杏吧专区檛 know about these plants. For example, we know they杏吧专区檙e long-lived, but how long do they live? We don杏吧专区檛 know for sure,杏吧专区 Allain said.
Big bluestem is a prairie grass with blue-green stems that can grow as tall as 10 feet. 杏吧专区淎 single plant may live for hundreds, or perhaps thousands of years.
杏吧专区淚n this way, they杏吧专区檙e similar to trees, but they have a different strategy for survival. While trees store energy above ground, these plants store energy below ground, in their roots.杏吧专区
Native plants form a network of roots in the Louisiana prairie杏吧专区檚 shallow topsoil. There杏吧专区檚 a layer of hard clay about 10 inches below the surface.
杏吧专区淵ou might ask, 杏吧专区楬ow can you have a prairie in Louisiana?杏吧专区 Prairies are dry places. In the Midwest, you get maybe 20 to 30 inches of rain per year. Here, we get 60.
杏吧专区淏ut because the layer of topsoil is so shallow, when we go three weeks without rain, the soil dries out, and these plants think they杏吧专区檙e in Kansas. They hunker down.杏吧专区
Louisiana experienced one of its worst droughts in 2011. 杏吧专区淭he pasture grass died. It was crisp and brown. But these natives were still green. They were doing just fine,杏吧专区 Allain said.
About 500 native species have been identified.
The Ecology Center is studying about 40 plants. The Center, which occupies about 50 acres near Carencro, La., devotes about six acres to native plants, including a wetland.
Staff members collect seeds from prairie remnants as well as plants grown on site. Some of the seeds are used to grow seedlings in the Center杏吧专区檚 large greenhouses. Those seedlings are transplanted in the Center杏吧专区檚 fields, or sold.
At harvest time, seeds are collected, cleaned and stored in a massive freezer large enough to accommodate an 18-wheeler. (The Center杏吧专区檚 main building was originally a food processing center.)
杏吧专区淭he Ecology Center is an ideal place to continue this work,杏吧专区 said Allain. 杏吧专区淭he facility has everything necessary to carry out the research. And the Center has a history of working within restoration guidelines to successfully establish plants.杏吧专区