Ageratum Seeds 'Red Sea'

Ageratum Houstonianum

Half-hardy annual Ageratum ‘Red Sea’ is a superb border-filler in summer, with bright red fluffy flowers that darken to a striking deep purple-red. Held on tall stems, they’re very popular with pollinators and ideal for cutting.

20 Seeds

30211001

Only 6 remaining

£2.49

Seed Only Delivery £2.99* | Learn More

Key Features

Marshalls Garden

Long Flowering Season

Marshalls Garden

Low Maintenance

Marshalls Garden

Pollinator Friendly

Product Information

Eventual Height:

50cm

Position:

Full Sun

Suitable for:

Patio, Small Gardens, Borders, Cottage Garden, Cut Flower Garden, Rockery, Wildlife Garden, Raised Bed

Plant Type:

Annual

Complete The Job

Growing Calendar

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Sow Indoors

Sow Indoors

Flowering

Flowering
  • Deep purple-red fluffy flowers
  • Very popular with pollinators
  • Flowers for months in summer
  • Ideal for cutting

Half-hardy annual Ageratum ‘Red Sea’ is a superb border-filler in summer, with bright red fluffy flowers that darken to a striking deep purple-red. Held on tall stems, they’re very popular with pollinators and ideal for cutting. Ageratum ‘Red Sea’ flowers from mid-summer into early autumn, adding colour and life to sunny borders.

Sow indoors

Almost fill a seed tray with moist seed compost. Sow seeds thinly over the surface, and lightly cover them with a little more compost. Place in the warmth, 15-20°C and keep moist.

Grow on

Keep seedlings in a light position, but shade from direct sunlight. When large enough to handle, transplant 5cm apart into trays of potting compost.

Harden off/plant out

Gradually accustom plants to outside conditions for 2-3 weeks before planting out when danger of frost has passed. Allow 25cm between plants.

Aftercare

Remove faded flowers during summer to prolong blooming.

How to grow

Sow seeds on to the surface of pre-watered seed compost, but don't cover them. Keep warm, around 20°C and keep moist, but not wet. Allow 1-2 weeks for germination.

Why Marshalls Garden

Why Marshalls Garden

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Soil Type

Sow seeds into seed sowing compost for fast and healthy germination

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