Hardy Annuals for Winter Sowing

trudi_d

8 years ago

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Bachelor Buttons
"What is a hardy annual?"

A hardy annual is typically tolerant of colder temperatures and is generally capable of reseeding in most gardens.

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Here's a list of hardy annuals suggestions for winter sowing!

Abronia umbellata (sand-verbena)

Adonis aestivalis (pheasant's eye)

Ageratum Houstonianum (floss flower)

Agrostemma githago (corn cockle)

Alonsoa acutifolia (maskflower)

Amaranthus caudatus (love-lies-bleeding)

Amberboa moschata (sweet sultan)

Anagallis indica (blue pimpernel)

Anchusa (bugloss)

Alyssum maritimum (sweet alyssum)

Antirrhinum majus (snapdragons)

Argemone mexicana (prickly poppy)

Asperula azurea (woodruff)

Brachycome iberidifolia (swan river daisy)

Browallia demissa (bush violet)

Bupleurum rotundifolium (ox-eye daisy)

Calandrinia grandiflora (red-maids)

Calendula (pot marigold)

Callistephus (China aster)

Campanula (annual Canterbury bells)

Celosia (cockscomb)

Centaurea (cornflower)

Centranthus macrosiphon (valerian)

Chrysanthemum paludosum (mini-marguerite)

Clarkia elegans

Collinsia bicolor (Chinese-houses)

Collomia coccinea (mountain-trumpet)

Consolida ajacis (Larkspur)

Convolvulus (dwarf/bush morning glory)

Coreopsis tintoria (calliopsis)

Cosmos bipinnatus (tall cosmos)

Cosmos sulphureus (sulphur cosmos)

Crepis rubra (hawks-beard)

Cuphea ignea (fiery cuphea)

Cynoglossum (Chinese forget-me-not)

Datura species (thorn-apple)

Delphinium (larkspur)

Dianthus chinensis (China pinks)

Diascia barberm (twinspur)

Dicranostigma franchetianum (bright-yellow poppy)

Dimorphotheca aurantiaca (Cape marigold)

Dracocephalum moldavica (Moldavian dragonhead)

Echium creticurn (bugloss)

Emilia javanica (tassel flower)

Eschschlotzia californica (California poppy)

Fagopyrum esculentum (buckwheat)

Felicia bergeriana (kingfisher daisy)

Gaillardia pulchella (blanket flower)

Gilia (bird's-eye)

Godetia (fairyfan, farewell-to-spring)

Gypsophila (baby's breath)

Helianthus (sunflowers)

Helichrysum (strawflower)

Helipterum (paper daisy)

Hunnemannia fumariifolia (Mexican tulip poppy)

Iberis (candytuft)

Impatiens (balsam)

Ionopsidium acaule (false diamond-flower)

Lathyrus odoratus (sweet peas)

Lavatera (annual mallow)

Leonorus (lion's paws)

Limnanthes douglasii (poached-egg plant)

Limonium sinuatum (statice)

Linaria bipartita (toadflax)

Linum (flax)

Lobularia (alyssum)

Lupinus (lupine)

Lychnis (catchfly)

Malcomia maritima (Virginian stock)

Malope trifida (malope)

Malva (mallow)

Matthiola bicornis (night-scented stock)

Mesembryanthemum (ice-plant)

Myosotis dissitiflora (forget-me-not)

Nemesia strumosa (Cape jewels)

Nemophila (baby blue-eyes)

Nicandra (shoo-fly)

Nicotiana (flowering tobacco)

Nigella (love-in-the-mist)

Osteospermum (Star of the Veldt)

Papaver (poppy)

Petunia hybrida (petunias)

Phacelia (scorpion weed)

Phlox drummondii (drummon phlox)

Portulaca grandiflora (portulaca, moss rose)

Rehmannia angulata (Chinese foxgloves)

Reseda odorata (mignonette)

Rudbeckia bicolor (gloriosa daisy)

Salpiglossis sinuata (painted tongue)

Salvia splendens (scarlet sage)

Sanvitalia procumbens (creeping zinnia)

Saponaria vaccaria (soapwort)

Scabiosa (pincushion flower)

Schizanthus pinnatus (butterfly flower)

Senecio elegans (ragwort)

Silene Armeria (none-so-pretty)

Specularia speculum (Venus' looking glass)

Tagetes (marigold)

Thunbergia alata (clockvine)

Tithonia rotundifolia (Mexican sunflower)

Torenia Fournieri (wishbone flower)

Trachymene caerulea (laceflower)

Tropaeolum (nasturtiums)

Ursinia anethoides (dill-leaf ursinia)

Vaccaria (cow soapwort)

Venidium fastuosum (Cape daisy)

Viola tricolor (pansy)

Viscaria (rose-of-heaven)

Xeranthemum (everlasting flower)

Zinnia elegans (common zinnias)

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Winter Sowing Annuals in Zone 5
Q
Comments (18)
laurelin, where do you normally get the white heliotrope? I didn't find any last year around here. You can email me off line or post here. Like laurelin, I normally do my annuals in early to mid March. Last year I did petunias, alyssum, godetia, marigolds, celosia, calendula, salvia, lobelia, hyacinth bean, and amaranthus with great success. I tried heliotrope last year but they didn't start to bloom until the end of the season so I will start mine inside real soon. I think it's good to experiment - I've tried almost all my hardy annuals in Jan and Feb and had success and some not. I just find it easier to do the annuals in March since I'm doing perennials earlier and feel I'm guaranteed to have success with the annuals when wintersown in March. Last year I did not buy any annuals except for Proven Winners Diascia 'Flying Colors Coral'. I still plan to purchase this since I can't find these seeds (not sure there is). However I am wintersowing a few other types of diascia - I hope it works since it's my all time favorite annual(tender perennial)! :)
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When can I winter sow these annuals?
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I found sunflowers to be somewhat frost tolerant when I put them out in the two or so weeks till last frost. The four o clocks and cypress vine are very frost tender in our zones.
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I too wintersowed cosmos for the Feb. 2 experiment and have a few sprouts, but they might be goners after last night's frost. Still, that's one I usually direct sow and I've got more seeds so it's fine. As for other annuals, the only ones I wait on are zinnias. My marigolds and petunias have been out for awhile and I've never had problems with starting them in Feb. or early March. Which annuals were you thinking of?
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Hmm... I'm noticing that even though that article begins with a nice drawing of a bee visiting a bachelor's buttons plant, BB's are actually not included in the list of hardy annuals suitable for winter sowing. That's surprising as it reseeded quite well for me. I've always been intrigued by what determines whether the seed of any particular annual, dropped by the plant's mature seed pod in late summer or fall, starts to germinate a few weeks later in the warmth of late summer or fall, or doesn't and instead over-winters to germinate and grow the following spring. I remember seeing many BB (ok: Centaurea cyanis) seedlings around their parent plants around October of last year and thinking, "Oh, my dear brother -- you shouldn't be growing here now. It's not going to work out well for you in the long term. Have you heard of something called winter?" I'm guessing they eventually all learned their lesson. But other seeds from the same parent plant get smart and decide to remain on or slightly beneath the ground during our cold winters, don't mind getting snowed upon, and then in April celebrate their great fortune and good wisdom by growing into nice healthy plants in May. And then in June they celebrate their beauty by bursting forth a glorious blue, or purple, or white flower. I know that many plants know enough science to insert into their seed some sort of chemical that allows the seed to go dormant when it needs to. Do all annuals that grow on the east coast have a fall-dormancy chemical in the seed? Some? Most? Even if many do, I would guess that sometimes it just doesn't work. Maybe the dormancy chemical is only effective for some percent of the seeds, and that some other seeds do germinate, or try to germinate, in the fall when it's a fairly good bet that germination will not lead to a full plant. We all know that's why nature insists that flower plants produce so many seeds: to guard against the unexpected or unwise. But every spring when I see these brave seedlings, already nicely-sized for early May -- way, WAY bigger than any plant growing from seed I'd been able to plant even in earliest spring -- I think: yes, this is one of the real advantages of winter sowing (or really, fall sowing), here done by nature, not by any human. She really knows what she's doing, or at the very least, how to make up for any inability on her part to foretell the future.
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Hardy Annuals for Winter Sowing

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