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13

Stabilize erodible areas

Many native plant installations are located along streambanks,

shorelines, and other sloped areas that have a tendency to erode.

Before planting occurs on these sites, the surrounding soils need to

be stabilized. Structures such as silt fences, erosion control blankets,

straw mulch, and straw bale dams can be installed to control erosion

and siltation. As a site becomes stable, seeding with permanent native

species helps with optimal long-term erosion control. Cardno provides

various

bioengineering materials

for erosion control.

Prepare planting and seedbeds

To prepare the soil and create optimal plant conditions before

disturbing any ground:

>>

Call 811 before you dig

>>

Clear area of debris that would interfere with planting

>>

Mow any excess existing vegetation growth

>>

Apply broad-spectrum or targeted herbicide, depending on

species present

>>

De-compact any areas of special concern

––

Lightly de-compact tilled or loose soil with a roller, cultipacker, or

similar equipment. If using a no-till seed drill, tilling can be omitted.

––

If ground is wet, tilling should not occur until the soil dries enough

to break apart when tilled.

Amend soils

For stormwater applications like rain gardens and bioswales, soil can be

amended to create appropriate growing conditions for wetland plants

and for drainage required to allow these features to function properly.

These areas often have the native soil removed and have a combination

of compost and sand applied to achieve this objective.

Follow appropriate timing

Seed:

The optimal time to install seed is from the fall (September 1)

to late spring (June 15). Avoid mid-to-late summer seeding, because

of limited soil moisture and rainfall. Native seed mixes can be

installed in the fall when temperatures are cooler and rains are more

frequent. Many native species require the cold stratification of winter

in order to break dormancy. When conditions are right in the spring,

the seed will be in place to germinate.

Seeding a wetland in the winter is often easier, because the site

is frozen and equipment can more easily access the site. Broadcast

the seed when the evening temperatures drop below freezing. Use

appropriate erosion control measures, because the seed is not

likely to germinate and provide stabilization until the following

growing season.

Creating a Native Landscape

Plant & Seed Material

Jan

Feb

Mar

Apr

May

Jun

July

Aug

Sept

Oct

Nov

Dec

Container Plants

Bareroot Aquatic Plants

BR Trees & Live Stakes

Seed Mixes

Vegetated Coir Products