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      • Garden Resources
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    • Rain Garden Info
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Hamilton County SWCD News

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Winter Seeding Natives

12/17/2020

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Picture
Claire Lane - Urban Conservationist

​After a long, cold winter the sunshine and warmer temps of spring usually inspire thoughts of flowers and new plantings and excitement over gardens and growth.  But, did you know you don't have to wait till spring to get started?  In fact, fall and winter can be the best time to start your native planting from seed.  Fall and winter seeding, sometimes called frost seeding or dormant seeding, takes advantage of the cold, moist winter weather. These conditions help seeds break their dormancy and germinate successfully in the spring. This process is known as cold-moist stratification and many of our native species must go through this process before they are able to germinate.

A general rule of thumb in native plantings is that fall plantings favor germination of forbs while spring seeding favors native grasses. An additional plus for fall seeding is particularly relevant to wet areas or areas with heavier silt or clay soils like Hamilton County. It is typically easier to work and prep these soils in the dry fall as they tend to stay wet late into the spring. Difficulties working wet clay soil in the spring can make you miss optimal seeding windows as well as compact soils.

Site Prep
The key to establishing native seed in any season is good seed, soil contact. Your site prep should make soil contact possible and the freeze and thaw throughout the winter will work the seed into the ground to the appropriate depth. Site prep that leaves disturbed soil uncovered is not ideal for a fall/winter seeding, especially on erosion prone sites.  Learn more about site prep options on the Site Prep page of our website.
​
Timing
Wait till daily temperatures are consistently under 70 degrees to avoid any fall germination.  In central Indiana, November is a great time to get started.  Most species need 30-90 days of cold-moist stratification so the earlier in the winter you get them broadcast, the better.  A good option is to broadcast seed just before a forecasted snow.  The snow acts as a temporary cover for the seed to avoid a bird smorgasbord of your seed. If you haven't prepped your site to allow for a winter seeding this year, it is possible to mimic the cold-wet stratification in your own fridge for a spring planting.  Learn more here.

Seeding
Hand broadcasting is typically the best frost seeding method for smaller areas but you'll want to follow best pracitces to make sure your seed is distributed evenly.   Learn more about seeding methods from Prairie Moon Nursery- How to Grow a Prairie from Seed.

Care
When spring arrives, keep an eye out for troublesome annual weeds. Hand pulling is your best bet for managing those early weeds in the first season. It can be difficult, especially for beginners to identify weed vs native plant seedlings but thankfully some resources are available. Check out the NRCS Prairie Seedling Guide or you can even create your own based on your seed mix.   We have plenty of maintenance resources available on our Pollinator/Native Garden Info page.

*A note on sourcing seed
Sourcing your seed is very important as you can find yourself in a situation where your seed is loaded with fillers or even noxious weeds seed!  You've done the work to prep and prepare, so extend that thoughtfulness to your species selection and your seed sourcing. We have a great list of native plant and seed sources available on the Where to Buy Native Plants page of our website.  If you want to start small, we also have packets of seed available for free at our office.  These packets are a simple mix of four species that will provide blooms for pollinators throughout the whole growing season. Learn more about the packets here. If you'd like to stop by to pick up some packets just give us a call to set up an appointment 317-773-2181. 


More resources: 
Purdue Extension - Now is the time to sow native grasses and forbs
Tallgrass Prairie Center- Dormant Seeding Prairie Field Day Video
Prairie Moon Nursery- How to Grow a Prairie from Seed

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