Border Builder

Turtlehead

Chelone obliqua

Illustration of Turtlehead

Turtlehead is a perennial for mid-border, suited to full sun to partial shade and clay, loam or moist ground, flowering Aug, Sep, Oct.

TypePerennial
Mature height90 cm
Spread60 cm
Aspectfull sun to partial shade
FoliageDeciduous
HardinessUSDA 5a-9b, RHS H5
Pollinator-friendlyYes
Pet-safeNot confirmed

Where to use it in a border

At around 90 cm, it sits best through the middle of a border, between taller structure behind and edging in front. Give it about 60 cm of room to spread. It is hardy across USDA zones 5a to 9b and rated H5 by the RHS, so check it suits your area before planting.

It appears in our lists of clay soil, wet soil, pollinator-friendly plants.

Border Builder uses Turtlehead's height, spread, soil, bloom months and companions to place it in a full border plan for your own conditions, on iPhone and iPad.

Download on the App Store

Flowering through the year

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Worth knowing

Good companions

Plants that share its conditions and style, chosen to complement its place in the border:

Garden styles

Cottage garden Wildlife garden