These plants are easy — they like to go into warm soil and hang for a few weeks, then get cold, and then germinate in the spring for a full season of growth. Many of them are natives, a few are ornamental grasses, and there are options for cut flowers, meadow gardens, container plantings, or mixing and matching to go with your garden style.
Briza Media - Perennial Quaking Grass - This is a great plant in the garden as well as for cut flowers. The pretty seed heads of this grass rattle in the slightest breeze.
Pimpinella major 'Rosea' - Greater Burnet - If you love the romantic country look of Queen Anne's Lace, you will likely enjoy Pimpinella as well. Instead of white, these flowers are pretty shades of pink
Zizia aptera - Heartleaf Golden Alexander is a native plant that grows naturally throughout much of the US (excluding the extreme south and southwest). Stems with yellow flowers rise above heathly green leaves.
Allium obliquum - Twisted leaf garlic - White flower balls top 12 – 15 in stems. These can be grown from seed as well as propagated by bulbs. The seed needs time to germinate in warm soil (now), then a cold period, and will grow next year.
Deschampsia flexuosa - Wavy Hairgrass is also a native grass, and it thrives in dry shade. It is not too tall (topping out at 18") and it is quite elegant.
(Image: Briza Media and Pimpinella major from Plant World Seeds. Zizia aptera from Prairie Moon Nursery. Allium obliquum image from Eden Brothers (where you can buy bulbs for this plant as well). Dechampsia flexuosa image from North Creek Nurseries)
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I just got a bunch of seeds from Prairie Moon Nursery which I'll be sowing in a couple of weeks. Also, my rattlesnake masters from this year produce a huge amount, so I've collected them to share and also reseed in my own garden in some other spots.
Also, don't forget milkweed, both common and 'Butterfly Weed' asclepias tuberosa. Pods can be harvested and direct sewn now. Both plants are essential to the Monarch Butterfly population.
Last year, I left leek seeds out in the garden in the fall and by the end of spring I had huge leeks everywhere. Leeks take so long to mature, so starting out the growing season with huge, delicious leeks was amazing. I had never grown them before so discovering these tall, alien-like stalks was a little scary, but totally worth it!