Savanna Mountain-mint

Pycnanthemum flexuosum

Native to South Carolina (estimated)

Pycnanthemum flexuosum — flower photograph — (c) Anne Parker, some rights reserved (CC BY) · CC BY 4.0 · Original photograph · iNaturalist medium image; no additional crop, retouching, or re-encoding.

Ecological relationships

Who uses this plant?

3CaterpillarsGenus host records with ranges including SC

Genus host records with ranges including SC · Pycnanthemum

Chloridea virescensTobacco Budworm Moth
Eutrapela clematariaCurved-Tooth Geometer, Purplish Brown Looper
Lintneria eremitusHermit Sphinx

Shropshire & Tallamy 2025, Lepidoptera of North America north of Mexico, ZooKeys 1261 (ODbL)

62BeesSoutheastern regional records

Southeastern regional records · Pycnanthemum

Individual names are not available yet.

Noori, Seltmann & Orr 2026, A curated and integrated dataset for exploring global bee-plant interactions (GloBI), Zenodo, CC BY 4.0

0Specialist beesPollen specialists

—BirdsRecorded genus food-resource interactions; not a state feeding claim

Beetles 5

Centrinus scutellum album
Mordella 8-punctata
Trichius affinis
Trichius piger
Typocerus sinuatus

Flower visits · Carlinville, Illinois, USA

Flies 30

Alophora fumosa
Anthrax fulvohirta
Archytas analis
Archytas aterrima
Cistogaster occidua
Conops xanthopareus
Epigrimyia polita
Eristalis latifrons
Eristalis tenax
Exoprosopa emarginata

Show all 30

Exoprosopa fasciata
Exoprosopa fascipennis
Helophilus latifrons
Limnophora narona
Mallota illinoensis
Milesia ornata
Odontomyia cincta
Orthoneura nitida
Paradidyma singularis
Phorantha humeralis
Physocephala texana
Physocephala tibialis
Scepsis fulvicollis
Spallanzania hesperidarum
Sphaerophoria cylindrica
Spilomyia longicornis
Stratiomyia meigenii
Xanthomelana arcuata
Zodion fulvifrons
Zodion obliquefasciatum

Flower visits · Carlinville, Illinois, USA

Adult butterflies / moths 15

Argynnis cybele
Euptoieta claudia
Eurema lisa
Limochores taumas
Pholisora catullus
Phyciodes tharos
Pontia protodice
Strymon titus
Thanaos juvenalis
Thanaos martialis

Show all 15

Thorybes bathyllus
Vanessa atalanta
Vanessa cardui
Vanessa huntera
Zerene caesonia

Flower visits · Carlinville, Illinois, USA

Other wasps 53

Ammobia ichneumonea
Ammobia nuda
Ammobia pennsylvanica
Ancistrocerus unifasciatus
Astatus unicolor
Bembix nubillipennis
Bembix spinolae
Bicyrtes 4-fasciata
Bicyrtes ventralis
Cerceris clypeata

Show all 53

Flower visits · Carlinville, Illinois, USA

Other insects 2

Calocoris rapidus
Lygaeus turcicus

Flower visits · Carlinville, Illinois, USA

No records yet · Ants

Growing and identification

Plant details

Family: Lamiaceae
Hardiness: Zones 5a–8b
Soil pH: Acidic to alkaline
Flower color: Purple or white

Safety has not been reviewed for this plant; check toxicity and thorns before planting.

Growing sources and scope

Flower color · “Purple or white” · NC Extension Plant Toolbox
Hardiness · “Zones 5a–8b” · NC Extension Plant Toolbox
Height · “2–3 feet” · NC Extension Plant Toolbox
Life cycle · “Perennial” · NC Extension Plant Toolbox
Light · “Full sun (6 or more hours of direct sunlight a day); Partial shade (direct sunlight only part of the day, 2-6 hours)” · NC Extension Plant Toolbox
Soil · “Moist; Occasionally dry” · NC Extension Plant Toolbox
Soil pH · “Acidic to alkaline” · NC Extension Plant Toolbox
Spread · “1–3 feet” · NC Extension Plant Toolbox

Also known as

Savanna Mountain mint

Conservation status

South Carolina rank	Not available
Global rank	G5
SC status	Not verified
Federal status	Not verified

Conservation source Global and federal source

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Sources