Yes, when you’re planting prairie seeds, December can be a great time to sow them!! Native seeds actually need many freezes and thaws to soften up their hard seed coats so they are ready to germinate in the spring.
On the morning of December 4th, I helped Jay Stacy, a land steward at Nachusa Grasslands, hand–sow seeds onto a problem area in his prairie field.
Over the past seven months, Jay (with my help also!) has hand–collected seeds from all over Nachusa’s restored prairie fields, to use for this ‘Mullein Hill’ planting. The seed mix we sowed contained over 40 different species, many species that are rare in plantings (conservative species) and many species that will colonize quickly and then give way as the rare species become established.
I asked Jay what was in his seed mix and he said, “Leadplant, dropseed, cream wild indigo, pale purple coneflower, western sunflower, coreopsis palmata, yellow coneflower, shooting stars, prairie violets, silky aster and many other species.”
The 16 acres surrounding this hill were planted into prairie in 2012, but Jay left this small fifth of an acre unplanted due to all the brush and tree limbs laying across the slope. Jay cleared the hill of stumps and branches in 2013, but in the meantime, mullein, an invasive non–native species, took over!! Boy, did these plants ever take over! See all the green rosette–shaped plants covering the hill and slope as far as you can see? There are hundreds and hundreds of these non–native plants in just this small area.
Mullein grows well in sandy, dry areas and this hill was a perfect place for it to thrive. To keep this biennial from making seeds, Jay mowed the mullein down three separate times this past summer (2014). Now, Jay and I are planting some competition for the mullein and once these seeds sprout in the spring, the mullein won’t have a chance at survival.
This mullein hill is shaped irregularly, so Jay used an inventive planting method (known as the Schmadeke Technique) to insure that we did not miss any spots as we scattered out the seeds. First we ringed the outside perimeter with bright colored flags. Then we stood next to a starting flag and spaced ourselves about five feet apart. We began to spread our seeds while walking towards the next flag. When we arrived at the second flag, Jay pulled it out and handed it to me, and I plunked it in the ground to my left, thus creating a tighter circle to follow the next sweep around the hill.
I’m excited to visit ‘Mullein Hill’ next spring and see what has sprouted. We will probably need to give the hill a new name!