Verbascum bombyciferum 'Polarsommer'

Verbascum bombyciferum ‘Polarsommer’

Broussa mullein

A table displaying which months are best to sow, plant and harvest.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Flowers
Flowers

Plant does not flower in January

Plant does not flower in February

Plant does not flower in March

Plant does not flower in April

Plant does flower in May

Plant does flower in June

Plant does not flower in July

Plant does not flower in August

Plant does not flower in September

Plant does not flower in October

Plant does not flower in November

Plant does not flower in December

  • Botanical name: Verbascum bombyciferum 'Polarsommer'
  • Common name: Broussa mullein
  • Family: Scrophulariaceae
  • Plant Type: Biennial
Flower colour:

Yellow

Foliage colour:

Silver

Broussa or giant mullein, Verbascum bombyciferum, is a statuesque biennial with silvery, hairy foliage and tall flower spikes bearing bright yellow flowers.

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Verbascum bombyciferum ‘Polarsommer’ – sometimes known as ‘Arctic Summer’ – is so-called because it bears a particularly dense and long-lasting layer of hairs, that give it a frosted appearance. In its first year it produces a rosette of large leaves. In the second year, a tall, sometimes branched flower spike emerges, bearing short-lived but numerous yellow flowers. It’s a great plant for wildlife – carder bees (Anthidium) use the ‘fur’ on the leaves to build their nests, the flowers attract bees and hoverflies and the foliage serves as a caterpillar food plant.

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Verbascum bombyciferum ‘Polarsommer’ is a good self-seeder, and is often found growing on disturbed soils where the long-lived seeds have been able to germinate. For best results grow Verbascum bombyciferum ‘Polarsommer’ in full sun in well-drained, neutral to alkaline soil. It’s best not to crowd it too much with other plants, as it’s easily overcrowded and outcompeted in these situations.

How to grow Verbascum 'Polarsommer'

  • Plant size

    1.8m height

    60cm spread

  • Aspect

    South facing, west facing

  • Position in border

    Front, middle

  • Sun exposure: Full sun
  • Hardiness: Hardy
  • Soil type: Chalky / alkaline / well drained / light / sandy

Plant calendar

A table displaying which months are best to sow, plant and harvest.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Sow
Sow

Do not Sow in January

Do not Sow in February

Do Sow in March

Do Sow in April

Do Sow in May

Do not Sow in June

Do Sow in July

Do Sow in August

Do not Sow in September

Do not Sow in October

Do not Sow in November

Do not Sow in December

Plant
Plant

Do not Plant in January

Do not Plant in February

Do not Plant in March

Do not Plant in April

Do Plant in May

Do Plant in June

Do not Plant in July

Do not Plant in August

Do not Plant in September

Do not Plant in October

Do not Plant in November

Do not Plant in December

Flowers
Flowers

Plant does not flower in January

Plant does not flower in February

Plant does not flower in March

Plant does not flower in April

Plant does flower in May

Plant does flower in June

Plant does not flower in July

Plant does not flower in August

Plant does not flower in September

Plant does not flower in October

Plant does not flower in November

Plant does not flower in December

Collect seeds
Collect seeds

Do not Collect seeds in January

Do not Collect seeds in February

Do not Collect seeds in March

Do not Collect seeds in April

Do not Collect seeds in May

Do not Collect seeds in June

Do Collect seeds in July

Do Collect seeds in August

Do not Collect seeds in September

Do not Collect seeds in October

Do not Collect seeds in November

Do not Collect seeds in December

Verbascum 'Polarsommer' and wildlife

Verbascum 'Polarsommer' is known for attracting bees, beneficial insects and other pollinators. It has nectar/pollen rich flowers.

Attractive to Bees

Attractive to Beneficial insects

Does not attract Birds

Does not attract Butterflies​/​Moths

Attractive to Other pollinators

Is Verbascum 'Polarsommer' poisonous?

Verbascum 'Polarsommer' has no toxic effects reported.

No reported toxicity to:

No reported toxicity to Birds

No reported toxicity to Cats

No reported toxicity to Dogs

No reported toxicity to Horses

No reported toxicity to Livestock

No reported toxicity to People

Plants that go well with Verbascum 'Polarsommer'

96099
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Stipa gigantea

Ornamental grass