Germination Requirements of Herbs Grown in KSU Trials. 
(Includes plants listed on fact sheets and also new plants which will appear on future fact sheets.)

 

Herb

Literature Recommendations

Our Experience at KSU

Latin Name

Common Name

Seed Treatment

Germination

Germ. %

KSU Germ.

Transplant

 Time

Recommendations

     Achillea millefolium

 

Yarrow

Light

10-12 Days

70%

6 Days

8-12 Weeks

Small seed   

     Althea officinalis

 

Marshmallow

Stratify 7 Days

3-5 Weeks

70%

11 Days

8 Weeks

Spreads quickly

     Arctium lappa

 

Burdock

No Treatment

1-2 Weeks

80-90%

7 Days

4-8 weeks

Direct seed biennial

     Artemesia vulgaris

 

Mugwort

Stratify 2 weeks.

2--4 Weeks

70%

 

10-12 Weeks

Small seed

     Asclepias tuberosa

Butterfly Weed

Stratify

Several Weeks

2-3 Weeks

40%

8 Days

12-16 Weeks

Grows slowly

     Astragalus

     membranaceus

Milk Vetch

Stratify 3 Weeks,

Scarify and soak

4 Weeks

50%

2 Days

(overnight soak)

12 Weeks

Soak overnight

     Borago officinalis

 

Borage

No Treatment

7-14 Days

75%

10 Days

6 Weeks

Direct seed

     Calendula officinalis

 

Calendula

No Treatment

7-10 Days

80%

4 Days

8 Weeks

Direct seed

    Cnicus benidictus

 

Blessed Thistle

No Treatment

7-15 Days

60%

5 Days

4-8 weeks

Direct seed

      Echinacea angustifolia

Narrow Leaf

Cone Flower

Stratify 90 Days,

Light

10-20 Days

50%

15 Days

12 Weeks

Direct seed in fall

     Echinacea pallida

Pale Purple

Cone Flower

Stratify 60 Days,

Light

10-20 Days

50%

4 Days

8-12 Weeks

Direct seed in fall

      Echinacea purpurea

Purple

Cone Flower

No Treatment

10-20 Days

70%

9 Days

8-12 Weeks

Direct seed

     Eupatorium perfoliatum

Boneset

Stratify 7 Days,

Light

2-3 Weeks

80-90%

13 Days

8-12 Weeks

Small seed   

      Eupatorium purpureum

Joe Pye Weed

Stratify 7 Days,

Light

3-4 Weeks

 

12 Days

8-12 Weeks

Likes moisture

     Glycyrrhiza glabra

 

Licorice

Soak and Scarify

7-14 Days

70-80%

7 Days

12-16 Weeks

Soak overnight

     Glycyrrhiza uralensis

 

Licorice

Soak and Scarify

7-14 Days

70-80%

7 Days

12-16 Weeks

Soak overnight

     Hypericum perforatum

 

St. John's Wort

Light

3-4 Weeks

70%

3 Weeks

12 Weeks

Small seed   

    Hyssopus officinalis

 

Hyssop

No Treatment

10-20 Days

70%

6 Days

10-12 Weeks

Small seed   

    Inula helenium

 

Elcampane

No Treatment

3-4 Weeks

50%

6 Days

8-12 Weeks

Direct seed

    Leonurus cardiaca

Mother Wort

Stratify

Several Weeks

2 Weeks

75%

15 Days

10-12 Weeks

Small seed   

    Lespedeza capitata

Round Head Lespedeza

 

 

 

 

 

 

    Levisticum officinale

 

Lovage

Stratify 1-2 Weeks

2 Weeks

5%

12 Days

8-12 Weeks

Poor germination

  Marrubuim vulgare

 

Horehound

No Treatment

2-3 Weeks

70%

9 Days

8-12 Weeks

Small seed   

  Matricaria recutita

 

Chamomile

No Treatment

7-14 Days

70%

 

8-10 Weeks

Quick crop

     Monarda fistulosa

 

Monarda

Stratify 3 Months

2-3 Weeks

60-70%

8 Days

8-weeks

Spreads quickly

    Nepeta cataria

 

Catnip

Stratify 2-3 Weeks

2-3 Weeks

50%

 

2-3 Months

Spreads quickly

     Oenothera biennis

Evening Primrose

Stratify

Several Weeks

2-weeks

80%

8 Days

8-10 weeks

Biennial

     Origanum Vulgare

 

Oregano

Stratify 1 Week

7-14 Days

70%

 

8 Weeks

Spreads quickly

    Passiflora incarnata

 

Passion Flower

Stratify 1 Week

3 Weeks

40%

 

8-10 Weeks

Difficult to germinate

     Prunella vulgaris

 

Self Heal

Stratify 1 Month

3 Weeks

70%

12 Days

8 Weeks

Spreads quickly

     Rumex acetosella

 

Sheep Sorrel

No Treatment

7-10 Days

70%

7 Days

8 Weeks

Spreads quickly

     Ruta graveolens

 

Garden Rue

Stratify 1 Week

7-10 Days

50%

14 Days

8-10 Weeks

Handle with gloves

    Salvia apiana

White Sage

Stratify 1 Week

2-3 Weeks,

 80°

40%

9 Days

10-12 Weeks

annual in Kansas

     Scutellaria lateriflora

 

Skullcap

Stratify 1 Week

2-4 Weeks

75%

13 Days

10-12 Weeks

Spreads quickly

     Sillibum marianum

 

Milk Thistle

No Treatment

10-14 Days

90%

10 Days

4 Weeks

Direct seed

     Spilanthes

 

Toothache

High Temperature

10 Days

100%

4 Days

4-8 weeks

Spreads quickly

     Stevia rebaudiana

Stevia

No Treatment,

 bottom Heat

2-3 Weeks

30%

4 Days

8-10 Weeks

Difficult to germinate

     Tanacetum parthenium

Fever Few

Stratify 1 Week,

Light

10-14 Days