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Ageratum houstonianum 'Blue Danube'Floss Flower

Half-hardy Annual

What is Half-Hardy Annual?
A plant that completes its entire life cycle (growth, reproduction, death) in one season.
Can be grown outdoors but requires winter protection from frosts and temperatures below 0C.

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Classic bedding annua

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Please note: This product cannot be delivered outside the United Kingdom.

Height Up to 20cm (7.9in)
Spread Up to 30cm (11.8in)

Half-hardy Annual

patiowildlife gardenscut flower garden

Full sun

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Flowering Months

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Description
  • Classic bedding annual
A large-flowered, vigorous variety of annual ageratum with powder-puff flower heads of soft, lavender blue. The fluffy, weather resistant blooms are particularly attractive to butterflies. With a dense, compact habit, Ageratum houstonianum 'Blue Danube' is perfect for adding texture and colour to bedding, borders and containers. Height: 20cm (8"). Spread: 25cm (10").

Garden Ready Plants - Our garden ready plants are selected for garden performance, straight from the nursery. We send them to you 'green' ahead of flowering (but please note some varieties may show a few blooms), which means plants will establish quickly and all their energy goes into producing better roots, so they produce more flowers throughout the season.


280 ageratum miniplug plants (T15704)
140 ageratum miniplug plants (T12975)
72 ageratum plug plants (T12786)
36 ageratum plug plants (T12785)
30 ageratum garden ready plants (57164)

How to Grow
Pot up floss flower plug plants into 9cm pots and grow them on in frost free conditions until large enough to plant outdoors. When ageratum plants are well grown, acclimatise them to outdoor conditions over 7 to 10 days. Transplant outdoors in a sheltered position in full sun on moist, fertile, well drained soil.
More Info
Water regularly until ageratum plants are fully established. Deadhead faded flowers throughout the summer to encourage more blooms to be produced.
Delivery

Seeds and garden supplies will normally be delivered within the time period stated against each product as detailed above. Plants, bulbs, corms, tubers, shrubs, trees, potatoes, etc. are delivered at the appropriate time for planting or potting on. Delivery times will be stated on the product page above, or in your order acknowledgement page and email.

Orders for packets of seed incur a delivery charge of £2.99.

Orders which include any other products will incur a delivery charge of £5.99.

Where an order includes both packets of seeds and other products, a maximum delivery charge of £6.99 will apply - regardless of the number of items ordered.

Large items may incur a higher delivery charge - this will be displayed in your shopping basket.

Please see our Delivery page for further details, and more information on different charges that may apply to certain destinations.

For more information on how we send your plants please visit our Helpful Guide on plant sizes.

Thompson & Morgan strives to ensure that all its plants are delivered to you in the perfect condition for planting. Sadly, the time it takes to deliver to certain locations in the UK means that we can't guarantee this, so regretfully we are unable to ship live plants to the following areas: HS, IV41-IV49, IV51, IV55-56, KW15-KW17, PA34, PA41-48, PA60-PA78, PA80, PH40-PH44, TR21-TR24, ZE1-ZE3

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