WS using vermiculite: (from Jonna Sudenius) "Fill half of the preparation container with dry vermiculite and pour water over it until just covered. Then immediately pour it in the sieve, so that the vermiculite doesn't get too wet. It's very important to pour it into the sieve promptly after watering; this will ensure the perfect moisture level for sowing the seeds. Gently shake the sieve a few times to get rid of the extra water. Now it's ready to use.
"Now you can begin to fill containers with your pre-moistened vermiculite. Prepare as many containers as you'll sow that day.
Using a large spoon or ladle, begin filling the containers. The layer must be between one and four inches high, depending on the kind and size of the seeds you're sowing. One inch will do for very small seeds that need light to germinate; while four inches might occasionally be used for very large seeds. Gently press the layer with the bottom of another container to settle the vermiculite. Once the desired depth has been attained, it's time to sow the seeds!"
This method can also be used for seed starting indoors; transplant the seedlings to potting mix once they have sprouted.
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Another link for how to winter sow: http://www.bachmans.com/files/...
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From wintersown.org
Seed lists for winter sowing:
Hardy annuals:
http://www.wintersown.org/wseo...
Common perennials:
http://www.wintersown.org/wseo...
Vegetables and Kitchen Herbs:
http://www.wintersown.org/wseo...
Native Plants:
http://www.wintersown.org/wseo...
_____________________
Some shrubs and trees may require a Double Dormancy to germinate their seeds. These seeds are sometimes called Two-Year Seeds.
For these seeds choose sturdy deep containers as they hold a greater amount of soil to retain moisture. Containers with a fourteen inch or larger diameter work well.
Site the containers in a partially shaded area where they can remain undisturbed for two or more winters. The shadier sides of a garden shed, garage or the garden utility area are good locations to nest containers for the many months needed until natural germination.
Wait it out. Check containers periodically for moisture, water as needed and remove weed seedlings.
Don't waste the space. You can use unsown areas of containers for sowing annual seeds. Gently remove seedlings so as not to disturb dormant seeds.
Expect staggered germination among any batch of similar seedlings, it can take several months to a few years for seeds requiring a double winter to germinate and grow.
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2016
All done from 2/9 to 2/11
#1 Amsonia/Blue Dogbane (seeds left from trade and plants to over-winter in HH) WS, needs strat
#4 Monarda fistulosa (Wild Bergamot) (2015 ATP swap) WS
#2 Aquilegia canadensis * (seeds, plus plants to over-winter in HH) WS or DS asap in spring
#2 Aquilegia; Purple Columbine WS
#3 Artemisia annua (Sweet Annie) seeds saved from 2015 WS or April 1
#3 Aruncus dioicus; Goatsbeard - seeds collected in 2015 WS
#1 Berlandiera lyrata (Chocolate Daisy) (2015 ATP swap) WS, DS after frost danger
#4 Oenothera 'Sunset Boulevard'* (seeds collected)
#6 Cephalanthus occidentalis (Buttonbush) (2015 ATP swap) WS and March
#6 Chimaphila maculata (Spotted Wintergreen) (2015 ATP swap) WS in sphagnum peat (see https://courses.washington.edu...)
#6 Claytonia virginica (Spring Beauty) (2015 ATP swap) WS
#7 Dicentra spectabilis (Bleeding Hearts) (pink and white flowered, mixed) * WS
#7 Heuchera micrantha (Coral Bells) 'Palace Purple' (2015 ATP swap) WS and March 1
#8 Digitalis purpurea (foxglove) - Cream with green spots (seeds collected in 2015) WS
#8 Digitalis purpurea; Foxglove - mixed WS
#5 Baptisia australis (2014 seed) WS; scarify seed
#5 Iris domestica (Blackberry Lily) (2015 ATP swap) WS
#10 Liatris punctata (Dotted Gayfeather) WS
#10 Liatris spicata; Gayfeather (2015 ATP swap)
#11 Anemone canadensis; Canada Anemone (seeds collected in 2015) WS
#11 Nepeta cataria (catnip) (seeds collected in 2014) WS
#12 Papaver somniferum; Poppy 'Persian Blue'(2015 ATP swap) WS or DS (mix with sand)
#12 Papaver somniferum; Poppy 'Pepperbox' (2015 ATP swap)
#13 Papaver; Poppy 'Park's Black Peony'
#13 Papaver; Florist's Poppy (did not germinate in 2015)
#13 Papaver; Poppies, Mary's peony flowered
#14 Nicotiana 'Sylvestris' and Nicotiana 'Mutabilis'* (seeds left from trade, plus collected)
#14 Penstemon strictus (Rocky Mountain Penstemon) (2 full pkts plus 1 partial, plants to over-winter) WS
Done on 2/15/16
#15 Viola tricolor; 'Johnny Jump-Up' (seeds collected 2015) WS; bring into GH on 3/15
#15 Viola; Pansy, 'Super Swiss Giants' (HPS 2016) needs 2 weeks cold strat.; WS and start in 6-pks for growing under lights; move WS seeds to GH and bring flat inside 3/15 to grow under lights
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2015
NOTE: For most of these I will also try starting seeds in the greenhouse as the weather begins to warm up.
Agastache
Amaranthus
Asparagus
Astragalus canadensis 2/5 (#5)
Bachelor Buttons 2/7 (#11)
Baptisia australis 2/2 (#3)
Blue dogbane?
Borage 2/7 (#10)
Buddleia "Buzz"
Butterfly weed 2/5 (#7)
Cardinal flower/Lobelia cardinalis 2/7 (#11)
Catnip 2/7 (#9)
Choke cherry 2/2 (#1)
Cimicifuga (Actaea racemosa) 2/5 (#5)
Clematis
Columbine
Cosmos "Bright Lights"
Delphinium
Elderberry 2/2 (#3)
Forget-Me-Not (alpine/northern type) 2/2 (#4)
Foxglove/digitalis 2/2 (#4)
Hollyhock (various types) 2/5 (#8)
Horsemint/Spotted beebalm (Monarda) 2/7 (#9)
Hyssop officianalis 2/7 (#9)
Joe Pye Weed, 'Chocolate'
Lobelia
Lunaria 2/5 (#7)
Maximillian sunflower 2/7 (#10)
Mint
Monkshood
Morning Glory
Nasturtiums
Partridge pea 2/5 (#5)
Plains coreopsis 2/7 (#12)
Poppies 2/5 (#6)
Purple coneflower/common milkweed seed mixture 2/5 (#7)
Redbud tree
Rocky Mountain penstemon (?)
Rue 2/7 (#9)
Sage - culinary
Sweet Annie
Sweet marjoram
Tansy (Tanacetum vulgare) 2/2 (#4)
Thyme, German Winter
Vaccinium ovatum (?)
Wild lupine 2/2 (#2)
Wine Cup/Callirhoe involucrata 2/7 (#12)
Wintergeen (Gaultheria procumbens) 2/5 (#5)
Winterberry 2/2 (#1)
Witch Hazel 2/2 (#1)
Yarrow
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