Call us today: 0333 400 0033 Calls cost no more than the national rate including calls from mobiles

100% Satisfaction Guarantee

Track Your Order

Award Winning Varieties

Voted Best Online Retailer

Our Customers Rate Our Excellent Service

Home>Flowers, Plants & Shrubs>Flower Seeds>Perennial & Biennial Seeds

Achillea ptarmica 'Double Diamond'

Just £0.99

4 Reviews
Description Sowing More Info Delivery Reviews Video
Compact bushy plants are smothered with mainly double, dazzling white pom-pom flowers. An improved selection of this fabulous first-year-flowering hardy perennial, growing to 30cm (12") in the first year and 80cm (32") in the second. Achillea 'Double Diamond' is ideal for the front and middle of borders, as ground cover or as low hedging where it will attract bees and other beneficial insects. This elegant Yarrow also makes a lovely cut or dried flower. Height: 80cm (31"). Spread: 60cm (24").

Cottage Gardens, Wildlife Gardens, Low Maintenance Garden, Cut Flower Garden, Coastal Garden


Full sun, Sun or semi shade

80cm (31.5in)

60cm (23.6in)

Sowing Months Flowering Months
Stake achillea stems in late spring. Cut back faded achillea flowers to encourage a second flush in late summer. Yarrow plants are relatively short lived perennials that will benefit from regular division every 2 or 3 years to maintain their vigour. Lift and divide overcrowded clumps in spring. Caution: Contact with achillea foliage may aggravate skin allergies.

Sow Achillea seed from February to June or September to October on the surface of a good seed compost, and cover with a light sprinkling of compost of vermiculite. Place in a propagator at a temperature of 15-24C (59-75F) or seal the seed tray inside a polythene bag until after germination, which usually takes 1- 3 weeks. Do not exclude light, as this helps germination.

When seedlings are large enough to handle, transplant into 7.5cm (3") pots and grow on in cooler conditions. When Achillea plants are well grown and all risk of frost has passed, gradually acclimatise them to outdoor conditions for 10-15 days before planting outdoors. Plant Yarrow at a distance of 60cm (24") apart in full sun in any moist, well drained soil. Overwinter September sowings in a cold frame and plant out the following spring.


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 and will be stated on the product page or in your order acknowledgement page and email.

Orders for packets of seed incur a delivery charge of £1.95.

Orders which include any other products will incur a delivery charge of £4.95.

Where an order includes both packets of seeds and other products, a maximum delivery charge of £6.90 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 details of any surcharges that may apply to certain destinations.

Satisfaction Guaranteed

For your complete peace of mind, our Home and Garden products may be returned to us within 30 days of purchase for a refund of the purchase price. Items must be returned unused, at your cost and in mint condition. All items carry a manufacturer's 12 month defects warranty.


Poor germination 2016-05-04

Poor germination. Seed compost, propagator yet only have 20 which grew.

T&M replied on 2016-04-06: Thank you for your review. I am sorry to learn of the low result of germination with this variety. If you would like to contact our Customer Care Department at, one of our agents will be more than happy to help.

Disappointing 2015-06-16

Easy from seed to plant; therefore a rating of 2 and not 1. But disappointing because there is absolutely nothing "Pom Pom" or "double" about the flowers. These plants produce tiny marguirite-type flowers.

T&M replied on 2015-06-17: Thank you for your review. I am sorry to learn of the disappointing results with your seeds. If you would like to contact our Customer Care Department at, one of our agents will be happy to look in to this matter for you.

music to my ears 2013-01-28

Finding perennials which are attractive and easy to grow is an art ...

Easy to Germinate 2011-09-26

My score is based on how easy it is to start these seeds. I sowed mine in September and followed the instructions, on the forth day they started growing and continue to do so with no signs of disease/rot; so simple to grow.