Turtlehead
Chelone glabra
Family Plantaginaceae
Yes, the flowers really do look like little turtle heads — and watching a bumblebee shoulder its way inside one is half the fun. Turtlehead blooms in late summer in moist shade, exactly the place and season most gardens have written off for flowers.
Its quiet claim to fame is bigger: it's the essential host plant of the rare Baltimore checkerspot butterfly. In a rain garden, streamside, or any spot that never dries, it's carefree, deer-resistant, and 2-3 ft of late color. Plant one for the butterfly you hope shows up.
Full Sun to Part Shade
High water
Moderate growth
Deer-resistant
Native to North America
Attracts butterflies
Attracts bees
From the print shop
Growing turtlehead? Hang it.
Our Plant Library collection carries turtlehead — Chelone glabra, print Nº 491, “Turtlehead.”
526 designsfrom $12.99white or black backgroundmatte poster, unframed
Will it thrive where you are?
Enter your ZIP — we look up your USDA hardiness zone (2023 map) and check it against what turtlehead actually needs.
Hardy inZones 3-8Turtlehead · Common problems
Common turtlehead problems
Pests
1 problem on file
- Almost none
Diseases
1 problem on file
- Powdery Mildew in dry soil
Turtlehead · Growing & propagation
Growing turtlehead
- Light
- Full Sun to Part Shade (if moist)
- Water
- High
A wetland native; never let it dry
Soil- Rich, moist to wet · pH 5.5 - 7.0
Fertilizer- None
Pruning- Cut back in spring
A charming native for wet shade — late-summer flowers shaped exactly like a turtle's open mouth, in white or pink, that bumblebees have to force their way into. Critically, it's the primary host plant for the beautiful, declining Baltimore checkerspot butterfly. Wants constantly moist to wet soil (rain garden, streamside, pond edge). Deer-resistant.
Spacing- 18-24 in
How to plant & propagate turtlehead
- Propagate
- Division or seed
Turtlehead · Seasonal care & spray guidance
The turtlehead growing playbook
When to spray turtlehead
Growing season. Keep it moist; that prevents mildew.
Turtlehead · Calculators & field guides
A little help in the garden.
Turtlehead · Yearly calendar
The turtlehead year, month by month
Jan
No calendar activity is listed for this month.
BloomPruneBloomAugust to November
PruneMarch to May
What each band means
- Bloom — flowers open — pollinators working, frost on blossoms is the danger.
- Prune — shape it now — cuts heal cleanly and structure is visible.
These are the species' typical months — expect them a few weeks earlier in warm zones and later in cold ones. Watch the plant, not just the calendar.
Turtlehead · Ecology & uses
Ecology & uses
Chelone glabra
Turtlehead in the garden system
- Herbaceous layer perennial
- Nectary/insectary
- Hosts Baltimore checkerspot butterfly (primary host)
- Attracts
- Butterflies, Bees
Habitat- Wetland
Moisture- Wetland / wet-tolerant
- Deer
- Resistant
A safer unfenced choice
- Origin
- Native to North America
What turtlehead is grown for
✓ Not known to be toxic
Use- Wet shade bloom
- Use
- Baltimore checkerspot host
- Use
- Rain gardens
Edibility, identification, and traditional-use notes here are general reference — not medical or veterinary advice, and not a claim that any plant treats or prevents anything. Medicinal ratings record how strongly a plant features in herbal tradition, nothing more. Never eat or dose a plant you have not positively identified. More on how to use this library.
Turtlehead · Varieties & cultivars
Choosing a turtlehead variety
Species (white); C. lyonii 'Hot Lips' (pink, garden favorite)
Sources & plant identity
Know what you’re growing.
See where the knowledge comes from.
Turtlehead
Chelone glabra
The plant, at a glance.
- Botanical name
- Chelone glabra
- Plant family
- Plantaginaceae
- Growth habit
- Perennial
- Origin
- Native to North America
- USDA plant symbol
- CHGL2
- Invasive risk
- Low
Hardiness, size and timing vary with your cultivar, soil and climate.
Rooted in research.
University extension research, brought together with hands-on growing experience at Story Thyme Farms.
Questions
Turtlehead questions, answered straight.
Do deer eat turtlehead?
Rarely — turtlehead is considered deer-resistant, which makes it one of the safer unfenced choices in deer country. Hungry deer in a hard winter test every rule, but it's a low-risk pick.
Is turtlehead safe for kids and pets?
Turtlehead is commonly eaten and isn't considered toxic, but "commonly eaten" isn't a guarantee for any particular person or animal — allergies, quantity, and which part you eat all matter. Never eat a plant you haven't positively identified, and check with a vet before letting pets or livestock graze anything new.
How do you propagate turtlehead?
Division or seed.
Elsewhere
Where turtlehead sits in the library.
Common Milkweed
Ironweed
Cup Plant
Helen's Flower (Sneezeweed)