Border Builder

Dark mullein

Verbascum nigrum

Illustration of Dark mullein

Dark mullein is a perennial for focal point, mid-border, suited to full sun and loam, sandy soil or chalk, flowering Jun, Jul, Aug.

TypePerennial
Mature height100 cm
Spread45 cm
Aspectfull sun
FoliageDeciduous
HardinessUSDA 5a-9a, RHS H7
Pollinator-friendlyYes
Pet-safeNo

Where to use it in a border

At around 100 cm, it sits best toward the back of a border, or on its own as a focal point with room around it. Give it about 45 cm of room to spread, roughly 2 to the metre when planted in a drift. It is hardy across USDA zones 5a to 9a and rated H7 by the RHS, so check it suits your area before planting.

It appears in our lists of full sun, sandy soil, chalk soil, pollinator-friendly plants.

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

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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 Native Wildlife garden

Sources

Bloom timing and hardiness drawn from: