Department of Agriculture - Testing of Seed - Flower seed minimum germination standards.


Published: 2014-09-21

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The minimum germination standards for seeds offered for sale in Ohio are:

Kind of flower seed minimum per cent germination
Archillea (the Pearl) - Achillea ptarmica 50
African Daisy - Dimorphotheca aurantiaca 55
African Violet - Saintpaulia spp 30
Ageratum - Ageratum mexicanum 60
Agrostemma (rose campion) - Agrostemma coronaria65
Alyssum - Alyssum compactum, A. maritimum, A. procumbens A. saxatile60
Amaranthus - Amaranthus spp65
Anagalis (primpernel) - A. arvensis, A. coerulia, A. grandiflora 60
Anemone - Anemone coronaria, A. pulsatilla55
Angel's Trumpet - Datura arborea60
Arabis - Arabis alpina 60
Arctotis (African lilac daisy) - Arctotis grandis45
Armeria - Armeria formosa 55
Asparagus, fern - Asparagus plumosus 50
Asparagus, sprenger, Asparagus sprengeri55
Aster, China - Callistephus chinensis; except Pompon, Powderpuff, & Princess types55
Aster, China - Callistephus chinensis; Pompon, Powderpuff, & Princess types 50
Aubretia - Aubretia deltoides45
Baby Smilax - Aparagus asparagoides 25
Balsam - Impatiens balsamina 70
Begonia - (Begonia fibrous rooted) 60
Begonia - (Begonia tuberous rooted) 50
Bells of Ireland - Molucella laevis60
Brachycome (swan river daisy) - Brachycome iberidifolia 60
Browallia - Browallia elata and B. speciosa 65
Bupthalum (sunwheel) - Buphthalum salicifolium 60
Calceolaria - Calceolaria spp60
Calendula - Calendula officinalis 65
California Poppy - Eschscholtzia californica 60
Calliopsis - Coreopsis bicolor, C. drummondi, C. elegans 65
Campanula: Canterbury Bells - Campanula medium60
Campanula: Cup and Saucer Bellflower - Campanula medium calycanthema60
Campanula: Carpathian Bellflower - Campanula carpatica50
Campanula: Peach Bellflower - Campanula persicifolia 50
Candytuft, annual - Iberis amara, I. umbellata65
Candytuft, perennial - Iberis gibraltarica, I. sempervirens55
Castor Bean - Ricinus communis 60
Cathedral Bells - Cobaea scandens 65
Celosia - Celosia argentea 65
Centaurea: Basket Flower - C. americana; Cornflower - C. cyanus;60
Centaurea: Dusty Miller - C. candidissima, Royal Centaurea - C. imperialis; Sweet Sultan - C. moschata; Velvet Cantaurea - C. gymnocarpa 60
Cerasium (snow-in-summer) Cerastium biebersteini and C. tomentosum 65
Chinese Forget-me-not - Cynoglossum amabile.55
Chrysanthemum, annual - Chrysanthemum carinatum, C.coronarium, C. Cineraria - Senecio cruentus60
Clarkia - Clarkia elegans 65
Cleome - Cleome gigantea 65
Coleus - Coleus blumei 65
Columbine - Aquilegia spp 50
Coral Bells - Heuchera sanguinea 55
Coreopsis, Perennial - Coreopsis lanceolata 40
Corn, ornamental - Zea mays 75
Cosmos: Sensation, Mammoth and Crested types - Cosmos bipinnatus; Klondyke type - C Sulphureau65
Crossandra - (Crossandra infundibuliformis)50
Dahlia - Dahlia spp55
Daylily - Hemerocallis spp45
Delphinium, Perennial- Belladonna and Bellamosum types; Cardinal Larkspur - Delphinium cardinale; Chinensis types; Pacific Giant, Gold Medal &.other hybrids of D. elatum.55
Dianthus: Carnation - D.caryophyllus 60
Dianthus: China Pinks - D. chinensis, heddewigi, heddensis70
Dianthus: Grass Pinks - D. plumarius 60
Dianthus: Maiden Pinks - D.deltoides60
Dianthus: Sweet William - D. barbatus 70
Dianthus: Sweet Wivelsfield - D. allwoodi60
Didiscus - (blue lace flower) - Didiscus coerulea65
Doronicum (leopard's bane) - Doronicum caucasicum 60
Dracaena - Dracaena indivisa55
Dragon Tree - Dracaena draco 40
English Daisy - Bellis perennis 55
Flax - Golden flax (Linum flavum); Flowering flax L. randiflorum; Perennial flax, L. perenne 60
Flowering Maple - Abutilon spp 35
Foxglove - Digitalis spp60
Gaillardia, annual - Gaillardia pulchella; G. picta; Perennial - G. grandiflora 45
Gerbera (transvaal daisy) - Gerbera jamesoni 60
Geum - Geum spp55
Gilia - Gilia spp65
Glosiosa daisy (rudbeckia) - Echinacea purpurea and Rudbeckia hirta 60
Gloxinia - (Sinningia speciosa) 40
Godetia - Godetia amoena, G. grandiflora 65
Gourds: Yellow Flowered - Cucurbita pepo; White Flowered - Lagenaria sisceraria; Dishcloth - Luffa cylindrica 70
Gypsophila: annual Baby's Breath - G. elegans; Perennial Baby's Breath - G. paniculata, G. pacifica G. repens 70
Helenium - Helenium autumnale 40
Helichrysum - Helichrysum monstrosum60
Heliopsis - Heliopsis scabra55
Heliotrope - Heliotropium spp 35
Helipterum (Acroclinium) Helipterum roseum60
Hesperis (sweet rocket) - Hesperis matronalis 65
*Hollyhock - Althea rosea65
Hunnemania (mexican tulip poppy) - Hunnemania fumariaefolia60
Hyacinh bean - Dolichos lablab70
Impatiens - Impatiens hostii, I. sultani 55
*Ipomea - Cypress Vine - I. quamoclit; Moonflower - I. noctiflora; Morning Glories, Cardinal Climber, Hearts and Honey Vine -Ipomea spp75
Jerusulem cross (maltese cross) - Lychnis chalcedonica 70
Job's Tears - Coix lacrymajobi 70
Kochia - Kochia childsi55
Larkspur, annual - Delphinium ajacis 60
Lantana - Lantana camara, L. hybrida 35
Lilium (regal lily) - Lilium regale50
Linaria - Linaria spp 65
Lobelia, annual - Lobelia erinus65
Lunaria, annual - Lunaria annua65
*Lupine - Lupinus spp 65
Marigold - Tagetes spp65
Marvel of Peru - Mirabilis jalapa 60
Matricaria (feverfew) - Matricaria spp 60
Mignonette - Reseda odorata55
Myosotis - Myosotis alpestris, M. oblongata, M. palustris 50
Nasturtium - Tropaeolum spp60
Nemesia - Nemesia spp 65
Nemophila - Nemophila insignis70
Nemophila, spotted - Nemophila maculata60
Nicotiana - Nicotiana affinis, N. sanderae, N. sylvestris65
Nierembergia - Nierembergia spp55
Nigella - Nigella damascena55
Pansy - Viola tricolor 60
Penstemon - Penstemon barbatus, P. grandflorus, P. laevigatus, P. pubescens 60
Petunia - Petunia spp 45
Phacelia - Phacelia campanularia, P. minor, P. tanacetifolia 65
Phox, annual - Phlox drummondi all types and varieties55
Physalis - Physalis spp 60
Platycodon (balloon flower) - Platycodon grandiflorum60
Plumbago, cape - Plumbago capensis50
Ponytail - Beaucarnea recurvata40
Poppy: Shirley Poppy - Papaver rhoeas; Iceland Poppy - P. nudicaule; Oriental Poppy - P. orientale; Tulip Poppy - P. glaucum 60
Portulace - Portulaca grandiflora 55
Primula (primrose) - Primula spp 50
Pyrethrum (painted daisy) - Pyrethrum coccineum60
Salpiglossis - Salpiglossis gloxinaeflora, S. sinuata60
Salvia - Scarlet Sage - Salvia splendens; Mealycup Sage (blue bedder) - S. farinacea 50
Saponaria - Saponaria ocymoides, S. vaccaria60
Scabiosa, annual - Scabiosa atropurpurea 50
Scabiosa, perennial - Scabiosa caucasica 40
Schizanthus - Schizanthus spp 60
*Sensitive pant (mimosa) - Mimosa pudica 65
Shasta Daisy - Chrysanthemum maximum C. leucanthemum 65
Silk Oak - Grevillea robusta25
Snapdragon - Antirrhinum spp55
Solanum - Solanum spp60
Statice - Statice sinuata, S. suworonii (flower heads)50
Stocks: Common - Mathiola incana; Evening Scented - Mathiola bicornis 65
Sunflower - Helianthus spp 70
Sunrose - Helianthemum spp 30
*Sweet Pea, Annual and Perennial (other than dwarf bush - Lathyrus odoratus), L.latifolius75
*Sweet Pea, dwarf bush - Lathyrus odoratus 65
Tahoka daisy - Machaeanthera tanacetifolia 60
Thunbergia - Thunbergia alata 60
Torcn Flower - Tithonia speciosa70
Torenia (wishbone flower) - Torenia fournieri 70
Tritoma Kniphofia spp 65
Verbena, annual - Verbena hybrida35
Vinca - Vinca rosea 60
Viola - Viola cornuta55
Virginian stocks - Malcolmia maritima65
Wallflower - Cheiranthus allioni65
Yucca (Adam's needle) - Yucca filamentosa50
Zinna (except Linearis and Creeping) - Zinnia angustifolia, Z. elegans, Z.grandiflora, Z. gracillima, Z. haegeana, Z. multiflora, Z. pumila 65
Zinnia, Linearis and Creeping - Zinnia linearis, Sanvitalia procumbens50

The germination standard for all other flower seed shall be fifty per cent.

* means that the minimum percentage for these species includes both the germination per cent and the hard seed per cent added together.

Last updated July 8, 2021 at 1:48 PM