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Lysimachia punctata

Dotted Loosestrife · Large Loosestrife · Large Yellow Loosestrife

Family PrimulaceaeGenus Lysimachia

Yellow five-petalled flowers with red-brown centers, on a stem and sepals covered in fine hairs
FlowersarefoCC 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
perennialPlants of the World Online
Height
2-4 ft0.6-1.2 mExtension Gardener Plant Toolbox
Spread
1-1.5 ft30-45 cmExtension Gardener Plant Toolbox
Flower
Gold/YellowExtension Gardener Plant Toolbox
Blooms
Fall, Spring, SummerExtension Gardener Plant Toolbox
Native range
Albania, Austria, Bulgaria, Czechia-Slovakia, Greece, Hungary and elsewhereGBIF Backbone Taxonomy
Hardiness zones
4-8Extension Gardener Plant Toolbox

Growing conditions

Sun
Full sun; Partial ShadeExtension Gardener Plant Toolbox
Soil
Clay, High Organic Matter, Loam (Silt), SandExtension Gardener Plant Toolbox
Soil pH
Acid (<6.0), Alkaline (>8.0), Neutral (6.0-8.0)Extension Gardener Plant Toolbox
Moisture
Good Drainage, MoistExtension 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.

This source reports three treatments. All are shown.

Protocol 1

DerivedN. C. Deno, 1996

Difficulty Low Rated by us, not by the source.

Start around March 8, 2027 for a May 3 last frost.

  1. Sow and cover

    Temperature: 70°F 21°C Light: light

No stated waiting before sowing. Then 28 days to germinate.

100% germination in 7–28 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Lysimachia p. 56Public domain
Show the original text
Lysimachia (Primulaceae). L. punctata germ. 70L(100% in 1-4 w), 70 GA-3(86% in 2nd w), and 70D(none). Seeds DS 1 y germ. 70L(83% in 1-4 w) and 70D(none).
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Lysimachia p. 56. 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 22, 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 14 days to germinate.

86% germination in 14 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Lysimachia p. 56Public domain
Show the original text
Lysimachia (Primulaceae). L. punctata germ. 70L(100% in 1-4 w), 70 GA-3(86% in 2nd w), and 70D(none). Seeds DS 1 y germ. 70L(83% in 1-4 w) and 70D(none).
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Lysimachia p. 56. 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 Low Rated by us, not by the source.

Start around March 9, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on March 8, 2026.

  1. Dry storage

    Duration: 365 daysTemperature: 70°F 21°C

  2. Sow and cover

    Temperature: 70°F 21°C Light: light

about 12 months from start to sowing. Then 28 days to germinate.

83% germination in 7–28 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Lysimachia p. 56Public domain
Show the original text
Lysimachia (Primulaceae). L. punctata germ. 70L(100% in 1-4 w), 70 GA-3(86% in 2nd w), and 70D(none). Seeds DS 1 y germ. 70L(83% in 1-4 w) and 70D(none).
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Lysimachia p. 56. 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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