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Lizard's Tail
A graceful native groundcover for wet shade, crowned in early summer by arching, nodding, fragrant white flower 'tails' - one of the few showy natives that thrives in the soggy, shady spots where little else grows.
Safety notes Lizard's tail is grown as an ornamental wetland groundcover, not a food. Its root has a folk-medicine history as a poultice for wounds and inflammation, but the plant has no established edible use and should not be eaten - 'not a food' rather than 'poisonous': there is no documented poisoning record. It is safe to handle and plant; simply keep it out of the kitchen and don't let curious pets or children chew the foliage or roots.
Overview
Lizard's tail (Saururus cernuus) solves a hard garden problem: what to grow in wet shade. A plant of shady swamps and stream banks across the eastern and southeastern U.S., it forms a lush groundcover of bold, heart-shaped leaves in the damp, dim places where most flowers fail - and then, in early summer, sends up its namesake nodding white flower tails, slender arching spikes of tiny fragrant flowers that curl at the tip like a lizard's tail.
The one thing to knowLizard's tail (Saururus cernuus) solves a hard garden problem: what to grow in wet shade.
Quick facts
- Height
- 30 inRange: 18–48 in
- Spread
- 30 inRange: 18–60 in
- Cold
- Takes hard frostdamaged below -30°F
- Heat
- Struggles above 95°F
- Life cycle
- Perennial, lives about 12 years
- Save seeds
- About 110 days after plantingRange: 90–140 days
- Self-sows
- Yes, expect volunteers
- Soil
- Tolerates wet soil
- Water
- High
- Plant spacing
- 18 inRange: 12–24 in
When to plant
Fall transplanting is open for 12 more days. Next: spring, Mar 27 to May 8.
- Transplant Sep 15 – Nov 1 Open now · 12 days leftIn mild-winter zones, plant in early fall into wet shade so it establishes over the cool season before spring growth.
- Transplant Mar 27 – May 8 Opens in 158 daysAbout 2 weeks before to 4 weeks after your last frost (Apr 10 here)Lift and divide the rhizome mat as growth resumes in spring and replant the pieces into wet, shady soil - the easiest way to make more plants.
- Transplant Apr 10 – Jun 5 Opens in 172 daysAbout at to 8 weeks after your last frost (Apr 10 here)Set out plants or divisions after last frost into constantly moist to wet soil in part to full shade; they establish quickly with ample moisture and spread into a groundcover over a season or two.
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
Establish, grow, repeat
Getting established and returning each season are different parts of the story.
Stage 1 of 4 · Getting established
Year 1 - rooting in
Day 0 to 60 after transplanting
Care at this stage
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Keep it wet and shaded
Lizard's tail is a plant of wet, shady stream banks and swamps. Plant it in constantly moist to saturated soil in part to full shade and never let it dry out; new plants sulk and crisp in dry or sunny sites.
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Mulch to lock in moisture
A layer of leaf mulch keeps the soil cool and damp, mimicking the woodland-swamp floor it comes from and helping a new plant settle in.
Months are typical seasonal windows; climate, variety, and plant age can shift them.
Watch out for
3 to know. 1 is high-risk: Drought Stress. None are active in October.
Drought StressSeverity High DisorderSeason: Jun–SepWilting on hot afternoons, browning and crisping along leaf edges and tips, premature leaf drop, collapsed flower stems, and thin, stunted growth - showing up first on young plants and on the driest, most exposed side of the planting.
Lizard's tail is a swamp plant and wants constantly moist to saturated soil in part to full shade. Too much sun compounds a dry site, and the leaf margins are the first thing to crisp.
Wilting on hot afternoons, browning and crisping along leaf edges and tips, premature leaf drop, collapsed flower stems, and thin, stunted growth - showing up first on young plants and on the driest, most exposed side of the planting.
Water deeply and consistently, then mulch. Mild wilting reverses within a day or two, but a prolonged drought sets a plant back hard and can kill a young one outright. If a plant scorches every summer, the site is wrong - move it to damper ground rather than trying to water it through.
Match the site to the plant: put a moisture-loving species where the ground actually stays damp - a rain garden, pond edge, ditch, seep or low spot - rather than in an ordinary border you intend to keep watered. Mulch to hold moisture and keep the roots cool, water deeply through every dry spell while the plant is establishing, and avoid hot, windy, exposed positions.
Not a pest but a siting problem, and on a moisture-loving plant it is usually the thing that actually kills it. When the soil dries out, leaf edges brown and crisp, foliage wilts and drops early, flowering and fall color are cut short, and growth thins. Hot sun, wind and exposed positions make it worse by pulling water out faster than the roots can replace it. A plant that wants reliably moist or wet ground has no drought tolerance to fall back on, and young or recently planted ones have the least of all.
Aggressive Rhizome SpreadSeverity Medium DisorderSeason: May–AugRhizomes running past the intended area, dense new shoots filling open water, and seedlings appearing in any bare wet mud downwind.
Rhizomes running past the intended area, dense new shoots filling open water, and seedlings appearing in any bare wet mud downwind.
Repeatedly cut stems below the waterline through a full season to drown the rhizomes, dig out the mats, or draw the water down; expect it to take persistence over more than one year.
Do not plant it; where it exists, install a deep physical barrier (8-10 inches) and keep it away from woodland edges. Remove berries to limit bird-carried spread.
A shallow mat of running rhizomes expands every year into a dense monoculture that shades out woodland wildflowers. Any fragment left in the soil regrows, so partial digging thickens the colony instead of reducing it.
Leaf SpotSeverity Low DiseaseSeason: Jul–SepSmall brown, dark, reddish or purple-bordered spots and blotches on the leaves during prolonged humid, rainy spells, sometimes enlarging and merging, with premature yellowing or leaf drop on the worst-affected growth.
Shows up on crowded or dry-stressed foliage late in the season. Keeping the soil evenly moist prevents most of it, since stress is what invites it here.
Small brown, dark, reddish or purple-bordered spots and blotches on the leaves during prolonged humid, rainy spells, sometimes enlarging and merging, with premature yellowing or leaf drop on the worst-affected growth.
Remove badly affected leaves and improve airflow; that is normally the whole of it. The plant flushes clean new growth once the weather turns. Fungicide is seldom warranted for a cosmetic leaf spot on an established plant.
Give the plant airflow - space, thin or prune it rather than letting the growth mat together - avoid overhead watering, and water early in the day so the foliage dries. Rake up and remove fallen leaves, which is where these fungi overwinter, and keep the plant unstressed and properly watered.
A catch-all for the various fungal leaf-spot diseases that blotch foliage in warm, humid, wet weather. They spot and yellow the leaves and sometimes bring on early leaf drop, and they are worst on crowded, shaded or overhead-watered plants and on anything already stressed. On a healthy, well-sited plant they are a cosmetic nuisance that comes and goes with the weather rather than a real threat.
Good & bad neighbors
Plant nearby
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Both love wet, part-shaded ground; cardinal flower's scarlet hummingbird spikes rise dramatically above lizard's tail's low white-flowered groundcover in a shady rain garden or pond edge.
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Shares lizard's tail's wet, part-shady conditions and adds blue late-summer spikes above the groundcover mat, extending the season of bloom in a shaded wet garden.
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A native wetland fern that thrives in the same wet shade, its bold fronds contrasting lizard's tail's heart-shaped leaves for a lush layered swamp-garden look.
- Traditional pairings, thin evidence
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A pond-margin iris for the same wet ground, adding sword foliage and early-summer blue above the spreading lizard's tail carpet.
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Pairs at a pond edge where lizard's tail covers the shadier saturated margin and pickerelweed stands in the sunnier shallow water just beyond.
Varieties · 2
You pick one when you add Lizard's Tail to your garden. Its days to maturity set your harvest window.
Lizard's Tail (Saururus cernuus)
The wild species: heart-shaped leaves and arching, nodding, fragrant white flower tails on a spreading rhizomatous groundcover for wet shade.
Variety details for Lizard's Tail (Saururus cernuus)
Bold heart-shaped leaves with slender nodding tail-like spikes of tiny white flowers.
speciesnativewhitewet-shadeThe standard native cover for shady pond edges, rain gardens, and boggy corners across the eastern U.S.
Chinese Lizard's Tail (Saururus chinensis)
A related Asian species grown in water gardens, notable for the upper leaves near the flowers turning white as if painted, adding a bright splash at bloom time.
Variety details for Chinese Lizard's Tail (Saururus chinensis)
Green heart-shaped leaves with the topmost leaves whitening around the flower spikes.
related-speciesasianvariegated-bractswet-shadeSimilar wet-shade, pond-edge culture to the native; not a North American native.
Grower tips
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