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Purple Dead-Nettle
The fuzzy purple-topped 'weed' that reddens fields and gardens in early spring - a mild edible green and gentle herbal plant that, despite its name, does not sting at all.
Safety notes Purple dead-nettle is a safe, mild, non-toxic edible - the fuzzy purple-tinged upper leaves, tender stems, and pink-purple flowers are all edible raw or cooked. Despite the name it is NOT a stinging nettle; 'dead-nettle' means nettle-shaped leaves with no sting. No deadly look-alikes, but see the look-alike note: henbit is equally edible (dead-nettle's upper leaves are stalked, henbit's clasp the stem), while creeping, strongly minty ground ivy is not. Only forage from herbicide-free ground.
Overview
Purple dead-nettle (Lamium purpureum) is the low, fuzzy plant whose purple-flushed upper leaves and small pink-purple flowers turn fields, gardens, and roadsides reddish-purple in late winter and early spring, usually mixed in with its cousin henbit. The name puts people off, but it is reassuring: 'dead-nettle' means the leaves merely look like a stinging nettle's - it is actually a mint-family plant with no sting at all and is a mild, safe edible green.
Quick facts
- Sprouts in
- 12 daysRange: 7–21 days
- Soil temperature
- 60 °FRange: 50–70 °F
- Height
- 8 inRange: 4–12 in
- Spread
- 8 inRange: 4–12 in
- Cold
- Takes hard frostdamaged below -20°F
- Heat
- Struggles above 85°F
- Life cycle
- Annual
- Save seeds
- About 60 days after plantingRange: 45–80 days
- Self-sows
- Yes, expect volunteers
- Soil
- Well-drained
- Water
- Medium
- Plant spacing
- 8 inRange: 4–12 in
When to plant
Fall sowing is open for 20 more days. Next: spring, Feb 27 to Apr 10.
- Direct sow Sep 13 – Nov 8 Open now · 20 days leftAbout 6 weeks before to 2 weeks after your first frost (Oct 25 here)If growing on purpose, surface-sow in fall in cool, moist soil for a winter-and-early-spring green; far more often it simply volunteers and needs no sowing.
- Direct sow Feb 27 – Apr 10 Opens in 131 daysAbout 6 weeks before to at your last frost (Apr 10 here)Sow in earliest spring while soil is cool; purple dead-nettle bolts and fades quickly once warm weather arrives.
Frost here: last around Apr 10 (Mar 27 to Apr 24 most years), first around Oct 25. Zone averages, your own yard may run a week or two either way.
Life stages
From the first start to harvest
Follow the growing sequence. Choose a stage to see its care and signs to watch for.
Stage 1 of 3 · The growing sequence
Cool-season sprouting
Day 0 to 14 from sowing
Care at this stage
-
Comes up in cool, moist weather
Purple dead-nettle germinates in the cool, moist conditions of fall and early spring - a winter annual that sprouts in autumn, overwinters small, and blooms early in spring. Keep a sowing damp; it needs almost no help.
Stages can overlap; weather, variety, and growing conditions change the pace.
Harvest
- Lush, tender purple-topped growth in the cool season (fall, and late winter through spring)
- Harvest before warm weather makes it stringy and before heavy seeding
- Snip the tender purple tops for greens · every 10 days
- A purple-topped cool-season carpet
Picking cut and it regrows
Cook with Purple Dead-Nettle
Watch out for
3 to know. None are high-risk for Purple Dead-Nettle. 1 is active in October.
Herbicide / Pollution ContaminationSeverity Medium DisordernowSeason: Feb, Mar, Apr, Oct, NovPlants growing in treated lawns, sprayed beds, pastures or croplands, along busy or polluted roadsides, or anywhere the ground around them looks suspiciously weed-free.
Purple dead-nettle is a cropland and lawn weed, and both settings are commonly sprayed. Early spring, when it is at its best, is also when lawn herbicides go down.
Plants growing in treated lawns, sprayed beds, pastures or croplands, along busy or polluted roadsides, or anywhere the ground around them looks suspiciously weed-free. Yellowed, twisted or distorted growth on neighboring plants is a sign something has been sprayed recently.
Do not harvest a contaminated plant - there is no washing this off, and no way to tell by looking. The plant itself is fine, so the answer is simply to choose a different site.
Only forage from ground you know has not been treated with herbicides or pesticides, and stay well back from busy roadsides. Ask before harvesting on land you do not manage. If you are not sure, grow your own patch, or gather only from a clean site you have watched across a full season.
A risk to the forager rather than to the plant. This species grows in lawns, gardens, pastures, croplands, field margins, paths and roadsides - exactly the places that get sprayed with herbicides and lawn chemicals, or that collect road pollution and runoff. The plant itself is harmless; what can make it unsafe to eat is where it has been growing.
Look-Alike ConfusionSeverity Low DisorderSeason: Feb–MayHenbit has STALKLESS clasping upper leaves and a greener look.
Ground ivy is the only look-alike here that is not edible; the two harmless confusions - henbit, and the stinging-nettle name - are the ones people ask about most.
Henbit has STALKLESS clasping upper leaves and a greener look. Ground ivy CREEPS along the ground on runners that root as they go, with round, long-stalked scalloped leaves and a strong minty smell when crushed. Dead-nettle stands upright, with stalked, triangular, purple-flushed upper leaves and little scent. True stinging nettle has coarse serrated leaves and stinging hairs.
A dead-nettle and henbit mix-up needs nothing - both are edible. Throw out any picking with ground ivy in it rather than sorting it at the sink; a stray leaf is not an emergency, but it is not food. Purple dead-nettle never stings, so a stinging plant is something else. If in doubt about any plant, do not eat it.
Crush a leaf and look at how the plant grows before you pick: strongly minty and creeping on rooting runners means ground ivy - leave it. For dead-nettle, check the square stem (mint family), the stalked purple upper leaves, and the lack of any sting; it and henbit are both edible, so confusing those two is harmless.
Purple dead-nettle is routinely confused with henbit (harmless - henbit is equally edible), mistaken by name for a stinging nettle (it has no sting), and, most often in practice, mixed up with ground ivy (Glechoma hederacea), which shares its lawns, its February-to-May window, its square stems, its small purple two-lipped flowers, and its scalloped fuzzy leaves. Ground ivy is the one look-alike here worth avoiding: it contains pulegone, it is a strong seasoning herb rather than a salad green, and it should not be eaten in quantity, during pregnancy, or by anyone with liver or kidney trouble.
Aggressive Self-Seeding & SpreadSeverity Low DisorderSeason: Mar–MayRipe seed heads or stalks shedding onto the ground, and a flush of volunteer seedlings coming up well beyond where the parent plant stood - most obvious in the first weeks of the plant's growing season.
Purple dead-nettle completes its cycle fast and reseeds prolifically as a cool-season weed. It is shallow-rooted and easy to pull, and harvesting it is the pleasant version of weeding it.
Ripe seed heads or stalks shedding onto the ground, and a flush of volunteer seedlings coming up well beyond where the parent plant stood - most obvious in the first weeks of the plant's growing season.
Hoe or hand-pull volunteers while they are small and before they set seed - the existing seed bank will keep germinating for several seasons either way, so this is an ongoing job rather than a single fix. Where the volunteers are themselves edible, harvesting them is the easiest control, but only ever eat or grow on a seedling you can positively identify.
Cut, deadhead or harvest the seed heads before they ripen and shatter, which is far easier than dealing with what they drop. Where the plant is grown deliberately, keep it in defined rows or a contained bed so that volunteers are obvious, and site it only where naturalizing is welcome.
Not a pest but a management issue. This plant sets and sheds seed prolifically, so anything left to ripen builds a persistent seed bank in the soil and returns as a heavy flush of volunteers the following season. Much of that seed stays viable for years, which is why one season of letting it go can take several seasons to undo.
Good & bad neighbors
All of these are traditional pairings. The evidence is thin, so treat them as a nudge, not a rule.
Plant nearby
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Another mild cool-season edible weed that carpets the same moist beds at the same time of year; harvested together they make a gentle mixed wild-greens salad or smoothie base in the lean early-spring window.
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The classic edible lawn weed offering a bold bitter contrast to dead-nettle's mildness; foraged together they cover the flavor range of early-spring wild greens.
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Purple dead-nettle's near-constant companion and look-alike, often growing intermingled in the same beds - learning the pair together (stalked purple vs stalkless clasping upper leaves) is the easiest way to know your mild edible early-spring mint-family greens.
Grower tips
Notes from growers, tagged with the zone they grow in. A person reads every post before it appears.
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