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Common Self-heal

Prunella vulgaris

Last reviewed: October 2026

Heal-all is a low-growing forb that blooms from June through September, thriving in part shade with medium moisture in meadows, lawns and woodland edges.

Common Self-heal (Prunella vulgaris)
Photo: William Stephens / Wikimedia Commons (CC BY 4.0)

Toxicity unknown

Common Self-heal (Prunella vulgaris) is not listed by the ASPCA Animal Poison Control Center (opens in new tab) or the other sources we check, so we have no verdict for it either way. Absence from those lists is not a clearance. If your pet shows symptoms after eating any plant, call the ASPCA at (888) 426-4435.

The USDA PLANTS Database (opens in new tab) does not flag Common Self-heal as toxic to livestock.

Light

part shade

Water

medium

Size

4"–24" H × 12"–24" W

Bloom

Jun, Jul, Aug, Sep

Native to

AL, AR, AZ, CA and 44 more states

Pollinators

bees, butterflies, beetles, nectar insects

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Heal-all is a low-growing perennial wildflower that forms dense mats with small purple flower spikes. It thrives in partial shade with moderate moisture and blooms from June through September. This hardy ground cover spreads readily and can fill in gaps between other plantings.

Growing Common Self-heal

Grow Common Self-heal in part shade and medium water. Mature plants reach 4 to 24 inches tall and spread 12 to 24 inches wide. Expect low maintenance to keep it looking intentional in a front yard.

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How to care for Common Self-heal, by region

How to care for Common Self-heal where it is actually grown: year-round basics plus what to do each season, region by region, with the sources for each.

Care guidance last updated: September 2026

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Cross Timbers (includes Fort Worth, TX)

Year-round

Heal-all is a low, spreading perennial that likes sun to part shade and moist soil. In Dallas-Fort Worth it does best with some afternoon shade and regular water in dry spells.

  • Choose sun to part shade, with afternoon shade in hot spots
  • Keep soil moist, not soggy
  • Works in both clay and sandier soil if you add compost
  • Cut back after flowering to keep it neat

It spreads as a low groundcover, so edge it to keep beds looking tidy.

Fall

Fall is a good time to divide or move clumps. Blooms wind down as nights cool.

  • Divide or transplant early in fall
  • Water new divisions until they settle
  • Trim back tired stems

Winter

In winter the plant rests and may die back in a hard freeze. It returns from the roots in spring.

  • Water only in long dry spells
  • Leave dead stems until early spring if you like
  • Keep a thin mulch layer

Spring

Spring is when new growth fills in. Water as leaves come up and thin any crowded patches.

  • Water when the top inch of soil is dry
  • Pull or divide extra spread to keep it in bounds
  • Add a light layer of compost

Summer

Flowers appear from about May through September. Summer heat means more frequent watering.

  • Water deeply once or twice a week in heat
  • Give afternoon shade in the sunniest spots
  • Trim spent flower spikes to tidy the patch
  • Mulch to hold moisture

Sources: Lady Bird Johnson Wildflower Center: Prunella vulgaris

Mississippi Valley Loess Plains (includes Memphis, TN)

Year-round

Heal-all is native to Tennessee and a tough, low-growing perennial that thrives with little care in the Memphis area's clay soils.

  • Plant in full sun to part shade, giving afternoon shade in the hottest spots
  • Tolerates clay, loam, and sandy soils and a wide pH range
  • Keep soil consistently moist through the first year to get it established
  • Once established it handles short dry spells without extra watering
  • Mow or shear after bloom if you want a tidier, lower mat instead of taller flower spikes

Kept mowed or edged, this low native groundcover reads as an intentional, HOA-friendly lawn alternative rather than a weed patch.

Fall

Bloom tapers off as days shorten, and foliage generally persists low to the ground into the cooler part of fall in the Memphis area.

  • Let remaining flower spikes finish before the average first fall frost in late October
  • Cut back spent stems if seed spread is a concern in a shared bed
  • Continue light watering only if fall stays dry
  • Good time to divide and transplant excess growth

Winter

Heal-all stays low and semi-evergreen through the Memphis area's mild zone 7b to 8a winters, needing essentially no care.

  • Leave the low foliage mat in place, it holds up through typical winter lows here
  • No watering needed during dormancy unless winter turns unusually dry
  • Clear fallen leaves off the crown so it isn't smothered
  • Plan any bed edits for early spring instead of mid-winter

Spring

Growth resumes quickly once nights warm past the Memphis area's average last frost in early April, ahead of its May bloom start.

  • Clear away winter debris so new rosettes get light
  • Keep new growth watered if spring turns dry
  • Divide or transplant clumps now if you want to spread the patch
  • No fertilizer needed in typical garden soil

Summer

This is peak bloom time through Memphis's hot, humid stretch, and the plant spreads readily if conditions stay moist and warm.

  • Water during extended dry heat, especially in part shade sites that dry out slower but stress under drought
  • Shear after flowering to control spread, it can become weedy in damp turf and beds
  • Watch for it creeping into lawn areas and edge as needed to keep it in bounds
  • Deadhead if you prefer a neater look, though pollinators use the flower spikes while blooming

Edge the bed line regularly in summer so the planting stays inside its intended border and reads as maintained.

Sources: Lady Bird Johnson Wildflower Center - Prunella vulgaris ssp. vulgaris, NC State Extension Plant Toolbox - Prunella vulgaris subsp. lanceolata, Shelby County frost date data (via harvestmath.com Tennessee growing zones)

Texas Blackland Prairies (includes Dallas, TX)

Year-round

Heal-all is a low, spreading perennial that likes sun to part shade and moist soil. In Dallas-Fort Worth it does best with some afternoon shade and regular water in dry spells.

  • Choose sun to part shade, with afternoon shade in hot spots
  • Keep soil moist, not soggy
  • Works in both clay and sandier soil if you add compost
  • Cut back after flowering to keep it neat

It spreads as a low groundcover, so edge it to keep beds looking tidy.

Fall

Fall is a good time to divide or move clumps. Blooms wind down as nights cool.

  • Divide or transplant early in fall
  • Water new divisions until they settle
  • Trim back tired stems

Winter

In winter the plant rests and may die back in a hard freeze. It returns from the roots in spring.

  • Water only in long dry spells
  • Leave dead stems until early spring if you like
  • Keep a thin mulch layer

Spring

Spring is when new growth fills in. Water as leaves come up and thin any crowded patches.

  • Water when the top inch of soil is dry
  • Pull or divide extra spread to keep it in bounds
  • Add a light layer of compost

Summer

Flowers appear from about May through September. Summer heat means more frequent watering.

  • Water deeply once or twice a week in heat
  • Give afternoon shade in the sunniest spots
  • Trim spent flower spikes to tidy the patch
  • Mulch to hold moisture

Sources: Lady Bird Johnson Wildflower Center: Prunella vulgaris

In an HOA neighborhood

Common Self-heal takes more care to keep looking intentional in a front yard. Maintenance level: low. Consider it for backyard or mid-zone beds rather than the street edge.

Works well in: backyard only.

  • Commonly considered a lawn weed
  • Spreads aggressively and can look unkempt
  • May be confused with invasive species by neighbors

Wildlife value

The purple flower spikes attract bees, butterflies, and beetles throughout the long blooming season. Its low growth provides shelter for beneficial insects and small wildlife.

Common questions

When does Heal-all bloom?
Heal-all typically flowers from June through September, producing small purple to violet blooms on short spikes.
What pollinators visit Heal-all?
Bees, butterflies and beetles regularly visit Heal-all for nectar, making it a useful addition to a pollinator garden.
How much light does Heal-all need?
Heal-all grows well across a wide light range, from full sun to shade, though it often does best in part shade.
How much water does Heal-all require?
Heal-all prefers medium soil moisture but tolerates conditions from consistently moist to somewhat dry once established.
What type of plant is Heal-all?
Heal-all is a low, spreading forb often found in lawns, meadows, and along woodland edges and trails.
Is Common Self-heal toxic to livestock?
The USDA PLANTS Database does not flag Common Self-heal as toxic to livestock.
Is Common Self-heal HOA-friendly?
Common Self-heal takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.

These answers were drafted with an AI model from this plant's data. Verify care details with a local expert.

Native range data from vouchered herbarium specimen records and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.

If something looks wrong

Common plant problems, and what to check first

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