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Veronica serpyllifolia

Thyme Leaved Speedwell · Thyme Speedwell · Thyme-leaf Speedwell · Thymeleaf Speedwell

Family PlantaginaceaeGenus Veronica

A small flower with three white petals striped blue and one plain white, around a yellow-green eye, on a leafy stem.
FlowerFornaxCC BY-SA 3.0

About the plant

What it is and where it grows — not part of any germination protocol.

The plant

Habit
Ground Cover, Herbaceous Perennial, PerennialExtension Gardener Plant Toolbox
Habit
subshrubPlants of the World Online
Height
0.5-1 ft15-30 cmExtension Gardener Plant Toolbox
Spread
1-3 ft30-90 cmExtension Gardener Plant Toolbox
Flower
Blue, Purple/Lavender, WhiteExtension Gardener Plant Toolbox
Blooms
Spring, SummerExtension Gardener Plant Toolbox
Native range
Alabama, Alaska, Albania, Alberta, Aleutian Is., Algeria and elsewhereGBIF Backbone Taxonomy
Hardiness zones
3-8Extension Gardener Plant Toolbox

Growing conditions

Sun
Full sun; Partial ShadeExtension Gardener Plant Toolbox
Soil
Clay, Loam (Silt), SandExtension Gardener Plant Toolbox
Moisture
Good DrainageExtension Gardener Plant Toolbox

Toxicity is noted only where a source states it. No note here is not a finding of safety.

Sources: Extension Gardener Plant Toolbox — NC State Extension; Plants of the World Online — Royal Botanic Gardens, Kew; GBIF Backbone Taxonomy — Global Biodiversity Information Facility.

Worth knowing

This source reports 5 treatments. All are shown.

Protocol 1

DerivedN. C. Deno, 1996

Difficulty Moderate Rated by us, not by the source.

Start around December 28, 2026 for a May 3 last frost.

  1. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  2. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C Light: light

about 3 months from start to step 2. Germination happens during step 2, in 8 days.

100% germination in 4–8 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Veronica p. 85Public domain
Show the original text
Veronica (Scrophulariaceae). V. serpyllifolia germ. 70L(50% in 2nd w), 70 GA-3(95% on 7th d), 40-70L(100% in 4-8 d), and none in 70D, 40-70D, or OT. Seeds DS 1 y were dead.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Veronica p. 85. Quoted exactly. Every value on this card comes from this record, except the difficulty rating, which is ours; the step names come from a fixed list.

Protocol 2

DerivedN. C. Deno, 1996

Difficulty Low Rated by us, not by the source.

Start around March 29, 2027 for a May 3 last frost.

  1. Gibberellic acid soak

  2. Sow and cover

    Temperature: 70°F 21°C

No stated waiting before sowing. Then 7 days to germinate.

95% germination in 7 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Veronica p. 85Public domain
Show the original text
Veronica (Scrophulariaceae). V. serpyllifolia germ. 70L(50% in 2nd w), 70 GA-3(95% on 7th d), 40-70L(100% in 4-8 d), and none in 70D, 40-70D, or OT. Seeds DS 1 y were dead.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Veronica p. 85. Quoted exactly. Every value on this card comes from this record, except the difficulty rating, which is ours; the step names come from a fixed list.

Protocol 3

DerivedN. C. Deno, 1996

Difficulty Moderate Rated by us, not by the source.

Start around March 22, 2027 for a May 3 last frost.

  1. Sow and cover

    Temperature: 70°F 21°C Light: light

No stated waiting before sowing. Then 14 days to germinate.

50% germination in 14 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Veronica p. 85Public domain
Show the original text
Veronica (Scrophulariaceae). V. serpyllifolia germ. 70L(50% in 2nd w), 70 GA-3(95% on 7th d), 40-70L(100% in 4-8 d), and none in 70D, 40-70D, or OT. Seeds DS 1 y were dead.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Veronica p. 85. Quoted exactly. Every value on this card comes from this record, except the difficulty rating, which is ours; the step names come from a fixed list.

Protocol 4

DerivedN. C. Deno, 1996

  1. Sow and cover

    Temperature: 70°F 21°C Light: dark

No stated waiting before sowing.

0% germination.

Nothing germinated at 70.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Veronica p. 85Public domain
Show the original text
Veronica (Scrophulariaceae). V. serpyllifolia germ. 70L(50% in 2nd w), 70 GA-3(95% on 7th d), 40-70L(100% in 4-8 d), and none in 70D, 40-70D, or OT. Seeds DS 1 y were dead.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Veronica p. 85. Quoted exactly. Every value on this card comes from this record; the step names come from a fixed list.

Protocol 5

DerivedN. C. Deno, 1996

Difficulty Very high Rated by us, not by the source.

  1. Sow outdoors and leave it

    Nothing germinated outdoors.

No stated waiting before sowing.

0% germination.

This source doesn't state how long step 1 lasts.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Veronica p. 85Public domain
Show the original text
Veronica (Scrophulariaceae). V. serpyllifolia germ. 70L(50% in 2nd w), 70 GA-3(95% on 7th d), 40-70L(100% in 4-8 d), and none in 70D, 40-70D, or OT. Seeds DS 1 y were dead.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Veronica p. 85. Quoted exactly. Every value on this card comes from this record, except the difficulty rating, which is ours; the step names come from a fixed list.

How each step is done, in Deno’s words, and what Verified and Derived mean.

Germination trials

Readers’ own records of sowing this species, published after review. Share your trial · All trials

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