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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
Seed Only Delivery £2.99*
Seeds £2.99: Dispatched by our expert team within 24hrs of placing your order 7 days a week
To ensure your seeds arrive in the freshest condition and undamaged, they are carefully packed in specially designed, fully recyclable packaging.
For larger seed orders we use Yodel express delivery to ensure you receive your package within 3 days of placing your order with the addition of it being fully tracked for your peace of mind.
Long Flowering Season
Low Maintenance
Pollinator Friendly
Eventual Height:
Position:
Suitable for:
Plant Type:
Jan
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Sow Indoors
Flowering
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
Soil Type
Sow seeds into seed sowing compost for fast and healthy germination
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