Monday, December 23, 2024

Flowers guide

Here we are compiling indoors germination information for home gardener.

Latin Name

Common Name

Light/dark germ

germ. temp.

Days to germination

Germination to bloom – days

Abutilon

Flowering Maple

Cover Lightly

72-76°

14-21 days

11-16 Weeks

Achillea

Yarrow

Do Not Cover

65-70°

15-20 Days

5 Months if started indoors

Acroclinium

Paper Daisy

Do not cover

72°

7-14 days

 

Actaea racemosa

Fairy Candles, black cohosh, black snakeroot

 

 

 

 

Ageratum

Floss Flower

Cover

70-75°

8-14 Days

10-14 Weeks

Alcea rosea

Hollyhock

Plant 1/4″ Deep

60°

10 Days

14 Weeks

Alonsoa

Mask flower

just cover

65°

14-21 Days

 

Alternanthera

Joseph’s Coat

do not cover

68°nt, 86°day

7-10 Days

11-12 Weeks

Amaranthus

Summer Poinsettia

Do not cover

70-75°

10-15 Days

 

Amaranthus Cruentus

Amaranthus (intense purple)

do not cover

70-75

5-14 days

 

Amberboa muricata

Amberboa

Plant 1/2″

 

7-21 Days

 

Ammi

Queen Anne’s Lace

Cover Lightly

See Notes

7-14 Days

8-10 Weeks

Anagalis

Blue Pimpernel

Barely cover

65-70°

18-21 Days

 

Anemone Hupehensis

Japanese Windflower, Japanese Anemone

Cover Lightly

50-60°

20 Days

19-20 Weeks

Anethoides

Ursinia

Cover Lightly

70°

12 Days

10 Weeks(?)

Angelonia

Summer Snapdragon

Do Not Cover

72-76°

5-10 Days

14-18 Weeks

Antirrhinum

Snapdragon

do not cover

55-65°

7-30 Days

10-12 Weeks

Aquilegia

Columbine

Do not cover

See notes

15-20 Days

 

Arabis caucasica

Rock Cress

Do Not Cover

70°

15-25 Days

12-16 Weeks

Arctotis stoechadifolia

African Daisy, Blue Eyed daisy

Cover to 4 times size of seed

Alt. 55 and 72°

15-25°

 

Aristolochia elegans

Elegant Dutchman’s Pipe

dark

>70°

1-3 Months

 

Asarina

Climbing Snapdragon

Do Not Cover

68-72°

14-28 Days

12-15 Weeks

Asclepias

Milkweed

Bright light

75°

7-10 days

16-18 Weeks

Astilbe x arendsii

False Goats beard, False Spirea

Do not cover

55-72°

20-25 days

 

Aster x Frikartii

Wonder of Staffa Aster

Do not cover

65 nt to 85 day

15-20 days

 

Astrantia

Masterwort

Cover

58-62°

14-28 Days

 

Bassia Scoparia

Burning Bush, summer cypress, Mexican fireweed

Needs light

 

 

 

Begonia

Begonia

Do Not Cover

70-75°

14-30 Days

See Notes

Belamcanda chinensis

Blackberry Lily, leopard lily

Cover

68° nt, 86° day

15-30

 

Bergenia cordifolia

See Saxifrage

Surface sow

60-70°

15-60 days

 

Brachycome

Swan River Daisy

Bright

68-70°

10-15 days

10-16 Weeks

Browallia

Bush violet

Bright

68-70°

14-21

See Notes

Buddleai davidii

Butterfly Bush

 

68-70°

15-20 days

 

Bupleurum rotundifolium

Bupleurum

Cover Lightly

60°

12-14 Days

10-12 Weeks

Calendula

English Marigold, Pot Marigold

Total Darkness, cover flat

70°

7-14 Days

12-15 Weeks

Callistephus chinensis

Aster, china

Some light

70°

10-14 days

3-4months

Campanula glomerata

Clustered Bellflower

Bright

 

10-12 days

 

Campanula Medium

Canterbury bells, bell flower

bright

70°

14-28

3 Months

Canna

Canna

Cover Lightly

70-75°

8-12 Days

12-16 Weeks

Capsicum annuum

Ornamental chilis

Cover

75-80°

10-15 days

 

Catananche

Cupid’s Dart

Cover Lightly

70-72°

10 Days

13-21 Weeks

Celosia

Cockscomb, wheatstraw

Cover Lightly

70 to 75°

5-10 Days

 

Centaurea bella

Bachelor Buttons

Dark, cover 1/4″

 

 

 

Cerinthe

Cerinthe

1/4-1/2″ Deep

65-70°

10-15 Days

10-12 Weeks

Cheiranthus cheiri

Wallflower

Cover Lightly

70°

7-10 Days

Same Year

Chrysanthemum ptarmiciflorum

Dusty Miller

Do Not Cover

68-70°

10-15 Days

No Blooms

Cineraria

Cineraria

Do Not Cover

75°

14 Days-see Notes

16 Weeks

Clarkia

Godetia, atlas flower, farewell-to-spring, satin flower

Needs light

 

 

 

Clematis

Clematis

 

 

 

 

Cleome

Spider Flower, Cleome

Bright

55-72°

15-20

7-12 Weeks

Clitoria ternatea

Pea Vine

Cover Completely

70°

14-30 Days

6-8 Weeks

Cobaea Scandens

Cathedral Bells, Cup and Saucer Vine

 

65-75°

21-30

 

Coix lacryma-jobi

Job’s Tears

 

70°

 

 

Coleus scutellariodes

Coleus

Do Not Cover

70°

7-10 Days

See Notes

Consolida ambigua

Rocket Larkspur

Dark, cover 1/4″

55°

20-30 days

 

Coreopsis

Coreopsis, Tickseed

Cover 1/4″

70-75°

5-10 Days

3 Months

Corydalis lutea

Yellow Corydalis

Do Not Cover

See Notes

 

 

Cosmos

Cosmos, Mexican Aster

Cover Lightly

70-75°

10-15 Days

5-10 Weeks

Crossandra

Crossandra, Firecracker plant

Do Not Cover

75-80°

25-30 Days

4 Months

Cuphea ignea

Cigar Plant / Firecracker

Do Not Cover

70°

12-15 Days

15 Weeks

Cynoglossum

Chinese Forget-me-not

See Notes

See Notes

See Notes

 

Dahlia

Dahlia

bright

68-70°

5-10 Days

 

Datura

Devil’s Trumpet

bright

65-70°

15-45 Days

 

Delphinium

Larkspur

Do Not Cover

60-65°

15-21 Days

10-12 Weeks

Dianthus

Carnation

Cover Lightly

68-70°

7-17 Days

10 Weeks

Dianthus barbatus

Sweet William

Cover Lightly

68-70°

5-10 Days

Next Season

Diascia

Twinspur, Diascia

Cover Lightly

65-70°

10-30 Days

12-16 Weeks

Dichondra

Dichondra, Ponysfoot, Kidneyweed

Dark, cover 1/4″

72-76°

4-6 Days

No Blooms See Notes

Digitalis

Foxglove

Do Not Cover

65-70°

9-15 Days

2nd Year

Doronicum

Leopard’s Bane

Do Not Cover

70°/See Notes

14 Days

9-16 Weeks

Dorotheanthus bellidiformis

Livingstone Daisy, Ice Plant

Total Darkness, cover flat

 

 

 

Echinacea

Coneflower

Do Not Cover

70-75°

10-20 days

 

Echinops

Globe Thistle

Do Not Cover

68-75°

15-20 Days

16 Weeks

Eryngium

Giant Sea Holly

Cover Lightly

68-70°

10-15 days

16 Weeks

Eschscholzia californica

Poppy, California

dark

55-60°

10-12 days

45-60 Days

Eucalyptus

Eucalyptus, Gum tree

Cover lightly

75°

?

 

Euphorbia

Snow-On-The-Mountain

Plant 1/4″

65-70°

20 Days

8 Weeks(?)

Eustoma grandiflorum

Lisianthus, prairie gentian

Cover Lightly

78-80°

10-20 Days

20-26 Weeks

Fritillaria meleagris

Checkered Lilly/Guinea hen flower

 

 

 

 

Gaillardia Grandiflora

Blanket Flower, perennial

Do not cover

68-70°

10-15 days

 

Gaillardia Pulchella

Blanket Flower, Annual

Cover

68-70°

10-15 days

 

Gazania rigens

Gazania, treasure flower

Total Darkness, cover flat

58-62°

10-14 Days

10-15 Weeks

Gerbera

Gerbera Daisy

Partial cover

68-70°

7-14 days

 

Geum

Avens

Cover Lightly

60-75° /      See Notes

12-30 Days

Flowers Best 3rd Year

Gloriosa

Gloriosa lily, climbing lily, flame lily

bright

70-75°

30-40

 

Gomphrena

Globe Amaranth

Dark, cover 1/4″

70°

14 Days

6-8 Weeks

Gypsophila

Baby’s Breath

Do Not Cover

70°

6-10 Days

8-12 Weeks

Helenium aromaticum

Yellow Dicks / Sneezeweed /

Cover Lightly

65-75°

7-10 Days

9-12 Weeks

Helianthus annuus

Sunflower

 

70-75°

 

 

Helichrysum

Helichrysum, licorice plant

 

 

 

 

Heliopsis

Ox-Eye Daisy

Cover Lightly

70°

10-14 Days

See Notes

Heliotropium

Heliotrope

Cover Lightly

70-80°

20

16 Weeks

Hemerocallis

Daylily

 

 

See notes

 

Heuchera

Coral Bells

Do Not Cover

60-70°

10 Days/See Notes

Next Year

Hibiscus cannabinus

Kenaf, Brown Indian Hemp

 

 

 

 

Hibiscus Moscheutos

Hardy Hibiscus, rose mallow, swamp mallow

 

 

 

 

Hibiscus rosa-sinensis

Hibiscus, tropical

 

 

 

 

Hippeastrum

Amaryllis

 

70-75°

4-6 weeks

 

Hypoestes phyllostachya

Hypoestes

Cover Lightly

65-70°

8-12 Days

10-15 Weeks

Iberis Umbellata

Candytuft

Some light

 

 

 

Impatiens balsamina

Balsam

Cover Lightly

80°

10-20 Days

10-12 Weeks

Impatiens walleriana

Impatiens

Needs light

70-75°

15-20 Days

12-14 Weeks

Incarvillea

Incarvillea Cheron, Delavi…

Surface sow

60-70°

25-60 days

 

Ipomoea

Morning Glory

Cover Lightly

68-72°

10-14 days

3-11 Weeks

Ipomoea carnea

Morning Glory bush, badoh negro

 

 

 

 

Ipomopsis rubra

Standing Cypress

 

 

 

 

Iresine herbsii

Iresine/Chicken Gizzard

Cover Lightly

70-74°

3-5 Days

9-14 Weeks

Iris

Blue Flag

 

 

 

 

Iris siberica

Siberian Iris

 

 

 

 

Iris Tectorum

Japanese Roof Iris, root iris, wall iris

 

 

 

 

Knautia Macedonica

Knautia

dark, cover 1/8″

55-72°

15-30 days

 

Kniphofia uvaria

Red Hot Poker

Plant 1/4″

65-70°

10-20 Days

12-20 Weeks

Kosteletzkya virginica

Seashore Mallow, Salt Marsh mallow

 

73°

14 days

 

Lablab purpueus

Hyacinth Bean

Do Not Cover

68-72°

8-10 Days

2-4 Weeks

Lady Bells

Adenophora Bulleyana

Needs light

68° or (55-60°)

1 to 4 months

 

Lagerstroemia

Crape Myrtle

 

 

 

 

Lathyrus odoratus

Sweet Pea

Dark, cover 1/4″

65-70°

7-21 days

10-16 Weeks

Lavandula angustifolia

Lavender

Do Not Cover

70°

15-20 Days

 

Lavatera

Tree Mallow

Dark, cover 1/4″

70-75°

10-20 Days

10-12 Weeks

Leucanthemum x superbum

Daisy, Shasta

Bright light

68-70°

10-14 days

20-26 Weeks

Liatris

Gayfeather, Blazing Star

Cover

55° alt w/ 72°

15-20 days

 

Linaria

Linaria

Cover Lightly

65-68°

2-4 Days

8-10 Weeks

Lobelia

Lobelia

Do Not Cover

70-75°

5-20 Days

12 Weeks

Lobularia maritima

Alyssum, Sweet

Needs light

65-70°

8-15 days

6-9 Weeks

Luffa Cylindrica

Luffa Sponge

Plant 1.5″ Deep

68-72°

 

 

Lupinus texensis

Texas Bluebonnet

 

 

 

 

Lychnis coronaria

Bloody Mary, Bloody William, Dusty Miller, Lychnis, Mullein Pinks, Rose Campion

Some light

68-70°

10-25 Days

 

Malva Sylvestris

Mallow, French Hollyhock

 

70-75°

15-21 days

 

Mandevilla laxa

Chilean Jasmine

Just cover

65-75°

14-30 days

 

Matthiola incana

Stock

Needs light

60-64°/see notes

10-14 days

14 Weeks

Melampodium paludosum

Blackfoot

Cover Lightly

65°

7-10 Days

8-11 Weeks

Mimulus

Monkey Flower

Bright light

68-86°

10-21 days

12-16 Weeks

Mirabilis

Four O’clock

Bright light

64-68°

7-21 days

 

Moluccella laevis

Bells Of Ireland – WS.

Do Not Cover

60°

20-35 Days

8-10 Weeks

Monarda didyma

Bee Balm

Do Not Cover

60° See Notes

15-20 Days

16 Weeks

Myosotis

Forget-Me-Nots

Cover Lightly

65-70°

14-30 days

9-13 Weeks

Nemesia

Nemesia

Cover Lightly

65-70°

5-15 Days

11-14 Weeks

Nemophila

Baby blue eyes

Dark, cover 1/4″

 

 

 

Nepeta

Catmint

 

 

 

 

Nerium oleander

Oleander

Cover Lightly

 

 

 

Nicotiana

Flowering Tobacco, jasmine tobacco

Do Not Cover

70°

10-15 Days

12-14 Weeks

Nierembergia

Nierembergia

Cover Lightly

70-75°

10-30 Days

10-16 Weeks

Nigella

Love-in-a-mist, fennel flower, spanish fennel

bright

55-70°

10-15 Days

 

Nolana

Nolana

 

 

 

 

Ocimum

Basil

 

 

 

 

Origanum

Marjoram

 

 

 

 

Origanum

Oregano

 

 

 

 

Osteospermum

African Daisy

Some light

65-75°

10-15 Days

11-16 Weeks

Papaver Atlanticum

Poppy, Spanish

Surface sow

59-68°

2-6 weeks

 

Papaver orientale

Poppy, Oriental

Surface sow

55-60°

10-21 days

 

Papaver somniferum

Poppy, Blue Bread seed

Surface sow

 

 

 

Pelargonium

Geranium

bright

70-75°

5-15 Days

 

Pennisetum glaucum

Millet, Ornamental

Cover Completely

72-78°

3-5 Days

No Blooms

Penstemon

Penstemon, beard tongue

Surface sow

55-65°

18-36 Days

 

Penstemon digitalis

Foxglove Penstemon

 

 

 

 

Pentas lanceolata

Star flower, egyptian star cluster

Do Not Cover

72-77°

15-40 Days

14-20 Weeks

Perovskia

Russian Sage

Cover Completely

68-72°

21-28 Days

26-30 Weeks

Petunia

Petunia

bright

70-75°

7-21 Days

 

Phacelia

Phacelia

 

 

 

 

Phlox drummondii

Phlox Annual

Total Darkness, cover flat

60-60°

10-15 Days

12 Weeks

Phlox paniculata

Phlox, tall garden

 

 

 

 

Phygelius capensis

Cape Fuchsia

 

70-75°

10-14 Days

12 Weeks (?)

Platycodon

Balloon Flower

Do Not Cover

65-75°

10-20 Days

12-20 Weeks

Plectranthus

Cuban oregano, Spanish thyme

Do Not Cover

68-75°

7-10 Days

13-16 Weeks

Porphyrocoma pohliana

Brazilian Fireworks

Cover Lightly

65-75°

5-10 Days

15-20 Weeks

Portulaca

Purslane, Moss rose

Needs light

 

 

 

Primula

Primrose

Do not cover

59-66°

30-45 days

18-22 Weeks

Ptilotus exaltus

Ptilotus

Do Not Cover

75-79°

7-10 Days

12-16 Weeks

Ratibida columnifera

Mexican Hats

Plant 1/16″ deep

68-75°

20-40 days

 

Reseda odorata

Mignonette

 

 

 

 

Rudbeckia

Black-Eyed Susan

Needs light

 

 

 

Rudbeckia

Gloriosa Daisy (Annual)

Cover Lightly

70°

5-10 Days

12-16 Weeks

Ruellia brittoniana

Desert petunia, Mexican Petunia, florida bluebells

do not cover

66-75°

 

 

Salpiglossis

Painted Tongue

Don’t Cover seed-See Notes

80°

15-20 Days

10-12 Weeks

Salvia

salvia, sage

Do Not Cover

 

7-14 Days

12-14 Weeks

Sanvitalia procumbens

Creeping Zinnia

Do Not Cover

68-70°

10-20 Days

9-10 Weeks

Saxifrage x arendsil

Saxifrage

Do Not Cover

70°

15 Days

3-6 Months

Scabiosa

Scabiosa, pincushion flower

Cover Lightly

65-78°

15-25 Days

12-18 Weeks

Schizanthus pinnatus

Poor Man’s Orchid

Total Darkness, cover flat

 

 

 

Schizanthus wisetonensis

Poor Man’s Orchid

Cover Completely

60°

7-14 Days

10-12 Weeks

Sidalcea

Checker mallow, false Mallow, Miniature hollyhock, prairie mallow

Cover lightly (1/8″)

50°

14-42 days

 

Solenostemon

Coleus, Painted nettle

Needs light

 

 

 

Spilanthes oleracea

Eyeball Plant, toothache plant, Para cress

Do Not Cover

72-76°

10-12 days

11-13 Weeks

Statice

Statice

Cover Completely

70°

10-15 Days

10-16 Weeks

Stephanotis

Jasmine

bright

75-80°

1-3 months

 

Sutera cordata

Bacopa

Do Not Cover

68-74°

5-10 Days

8-13 Weeks

Symphyotrichum

Aster

 

 

 

 

Tagetes

Marigold

Barely Cover

70-75°

5-7 Days

6-8 Weeks

Talinum

Jewels of Opar

Do Not Cover

65-75°

15-25 Days

9-10 Weeks

Tanacetum coccineum

Painted Daisy

Cover Lightly

55°

20-25 Days

2 Years

Tanacetum parthenium

Feverfew

Cover Lightly

60-65°

7-10 Days

22-23 Weeks

Tanacetum vulgare

Tansy

 

 

 

 

Tecoma Stans

Yellow Bells

Cover Lightly

68-74°

5-10 Days

12-16 Weeks

Teucrium chamaedrys

Germander

Do Not Cover

See Notes

25-30 Days

 

Thallictrum aquilegifolium

Meadow Rue

 

60-70°

15-30 Days

 

Thermopsis caroliniana

Carolina Lupin

 

70°

12-20 Days

 

Thunbergia Alata

Black Eyed Susan Vine

Cover Lightly

70-75°

10-20 Days

6-11 Weeks

Tithonia

Mexican Sunflower

Some light

68-70°

5-14 Days

8-15 Weeks

Torenia

Wishbone Flower

Cover Lightly

70°

10 Days

12-14 Weeks

Trachelium caeruleum

Blue Throatwort

Do Not Cover

65-70°

10-20 Days

16-20 Weeks

Tropaeolum

Nasturtium

Dark, cover 1/4″

65-70°

5-15 Days

7-11 Weeks

Verbascum

Verbascum

Do Not Cover

60-65°

15-20 days

10-18 eeks

Verbena (Annual)

Verbena

Cover Lightly

70-75°

10-25 Days

12-14 Weeks

Verbena bonariensis

Verbena (Perennial)

Cover Lightly

65-70°

20-30 Days

10-14 Weeks

Veronica speedwell

Veronica

Cover Lightly or surface sow

60-70°

15-90 Days

 

Vigna caracalla

Corkscrew Vine

Cover Completely

70-72°

10-15 Days

3 Months

Vinca

Vinca

Cover to thickness

70-75°

14-18 days

 

Viola

Pansy

Cover Lightly/See Notes

60-70°

10-20 Days

See Notes

Viola

Viola

Cover Lightly / See Notes

60-70°

10-20 Days

See Notes

Wahlenbergia undulata

Giant Bell Flower

Do Not Cover

60-70°

15-20 Days

 

Wisteria sinensis

Wisteria

Plant 1/4″ Deep

55-70°

30-35 Days

Up to 7 Years

Xeranthemum annum

common lmmortelle

Cover Lightly

68-70°

10 Days

 

Xerochrysum

Strawflower

 

 

 

 

Yarrow

Achillea Millefolium

Needs light

68°

14 days

 

Zantedeschia

Calla Lily

Do Not Cover

70-75°

1-3 Months

 

Zea mays var. japonica

Corn, Ornamental

Plant 1-1.5″ Deep

60-75°

7-10 Days

 

Zinnia

Zinnia

Cover Lightly

70-75°

5-10 Days

6 Weeks

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