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Lamium maculatum

Spotted Dead-nettle · Spotted Henbit

Family LamiaceaeGenus Lamium

Upright square stems carrying whorls of magenta hooded flowers above silver-marked toothed leaves, on a bank beside brown water.
The whole plantTomasz Kuran aka Meteor2017CC BY 2.5

About the plant

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

The plant

Habit
Ground Cover, Herbaceous PerennialExtension Gardener Plant Toolbox
Habit
perennialPlants of the World Online
Height
3-9 in10-25 cmExtension Gardener Plant Toolbox
Spread
1-2 ft30-60 cmExtension Gardener Plant Toolbox
Flower
Pink, Purple/Lavender, WhiteExtension Gardener Plant Toolbox
Blooms
Spring, SummerExtension Gardener Plant Toolbox
Native range
Albania, Austria, Baltic States, Belarus, Belgium, Bulgaria and elsewhereGBIF Backbone Taxonomy
Hardiness zones
3-8Extension Gardener Plant Toolbox
Note
Self-sows where Deno gardened, but the seed ripens over a long period and is hard to collect.Seed Germination Theory and Practice, 2nd ed.

Growing conditions

Sun
Dappled Sunlight; Deep shade; Partial ShadeExtension Gardener Plant Toolbox
Soil
High Organic Matter, Loam (Silt)Extension Gardener Plant Toolbox
Soil pH
Acid (<6.0), Alkaline (>8.0), Neutral (6.0-8.0)Extension Gardener Plant Toolbox
Moisture
Good Drainage, Moist, Occasionally DryExtension 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; Seed Germination Theory and Practice, 2nd ed. — N. C. Deno.

Worth knowing

This source reports two treatments. Both are shown.

Protocol 1

DerivedN. C. Deno, 1993

Difficulty High Rated by us, not by the source.

Start around September 10, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on September 9, 2026.

  1. Dry storage

    Duration: 180 daysTemperature: 70°F 21°C

  2. Sow on the surface — do not cover

    Temperature: 70°F 21°C Light: light

about 6 months from start to sowing. Then 28 days to germinate.

18% germination in 28 days.

Two seeds of eleven. Deno calls the light requirement a small-sample result.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, LamiumPublic domain
Show the original text
Lamium (Lamiaceae).. L. maculatum seems to require light based on a small sample as shown by 70L(2/11 in 4th w) and no 70D(none). These results are for seed DS 6 m at 70. This species self sows here, but seed ripens over a long period and is hard to collect.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Lamium. 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, 1993

  1. Dry storage

    Duration: 180 daysTemperature: 70°F 21°C

  2. Sow and cover

    Temperature: 70°F 21°C Light: dark

about 6 months from start to sowing.

0% germination.

Nothing at all in the dark -- which is the whole basis for the light requirement.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, LamiumPublic domain
Show the original text
Lamium (Lamiaceae).. L. maculatum seems to require light based on a small sample as shown by 70L(2/11 in 4th w) and no 70D(none). These results are for seed DS 6 m at 70. This species self sows here, but seed ripens over a long period and is hard to collect.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Lamium. Quoted exactly. Every value on this card comes from this record; 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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