100 seeds 020032 £1.95 In stock
When in stock, please allow up to 14 working days for despatch.
5 seedlings 510394-5 £6.50 Delivery late March
When in stock, please allow up to 2 weeks for delivery. 
10 seedlings 510394-10 £11.95 Delivery late March
When in stock, please allow up to 2 weeks for delivery. 
5 jumbo seedlings 510394-SP05 £8.50 Delivery mid May
When in stock, please allow up to 2 weeks for delivery. 

Or buy this as part of our Hardy Annual Cutting Patch Collection and Amethyst and Sapphire Cut Flower Mix.

More Details

If you want a garden that looks good through the autumn as well as the summer, it's a good idea to add salvias. Use this one to line paths.

Genus Salvia
Group/Species viridis
Variety Blue Monday (syn. Blue)
Type Hardy Annual
Common Name Blue Clary, Clary sage
Border Position Front, Middle
Soil Type Chalky, Fertile, Neutral
Scent Unscented
Site Full Sun
Moisture Well-drained
Height 45cm (18in)
Spacing 30cm (12in)
Sowing, Seeds, Planting Sow under cover February-April and/or late August-September. Or direct sow May or August. Hardy annuals can withstand a touch of frost and can be sown/planted straight into the ground in the autumn and will keep through the winter without protection. In colder areas you may wish to cover seedlings or keep in a cold frame/ unheated greenhouse.
Care Tips Give plants a good watering rather than just a little at a time. Grows well in a container pot.
Flowering June - November
Vase Life 10 days. Excellent and long-lasting, they also hold their colour when dried.
Harvesting Flower production: 3-4 months.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
  • Sow Under Cover/Plant Indoors
  • Direct Sow/Plant Outdoors
  • Flowers/Harvest
Advice & Videos
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Plant Delivery - When in stock, please allow up to 2 weeks for delivery. 

Seeds Delivery - When in stock, please allow up to 14 working days for despatch.

Click here to find out more information about our delivery rates and times.

Salvia viridis 'Blue Monday' reviews

* * * * * Average based on 36 reviews

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Reviewed 20th August 2019 by Tineke

Nice plants, taller than I had imagined. I didn't find them all that useful for cutting, though.

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Reviewed 15th August 2019 by Ann

Yes they replaced seeds that did not germinate

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Reviewed 8th August 2019 by Monica

Brilliant plants really lively

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Reviewed 7th August 2019 by Tina

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Reviewed 5th August 2019 by Helen

doing well - long flowering period

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Reviewed 2nd August 2019 by Annabel

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Reviewed 1st August 2019 by Claire

Not many survived seedling stage.

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Reviewed 1st August 2019 by Shelagh

Very good service, good germination rate, strong plants produced with a lovely purple colour.

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Reviewed 31st July 2019 by Ann

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Reviewed 31st July 2019 by Alison

Great plants to dot amongst perennials.

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Reviewed 31st July 2019 by Mrs Walder

good germination and nice colour

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Reviewed 31st July 2019 by Jennifer

These plants have grown well

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Reviewed 31st July 2019 by Susanna

Germinated well and is peforming nicely!

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Reviewed 22nd November 2018 by Susanna

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Reviewed 14th November 2018 by Christine

I was pleased with them but the dry and very hot summer meant that they did not all flourish. This was my second attempt to find salvias which fit well with my Absolutely Fabulous roses. The amistad ones were too big but a better colour. These were a better size but rather pale against the yellow roses.

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Reviewed 14th November 2018 by Alison

Don't think I ordered this

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Reviewed 11th October 2018 by Susie

Flowered beautifully and are still in flower now

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Reviewed 21st September 2018 by Marion

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Reviewed 21st September 2018 by Jane

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Reviewed 19th September 2018 by Mrs Davis

Flowered really well and continue, although I do water they survived the very hot weather well.

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Reviewed 19th September 2018 by Valerie

These deep blue flowers bloom continually throughout the summer and into the autumn. Wonderful.

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Reviewed 19th September 2018 by Julia

One of these seedlings has mildew on when it arrived and hence didn’t survive. Others were all in good condition.

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Reviewed 19th September 2018 by Sara

They performed well and were true to what I ordered.

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Reviewed 19th September 2018 by Fiona

Theses did not do well in our droughtish summer although last year they were perfect

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Reviewed 12th September 2018 by Isabel

These were reasonable but I found my own, grown from seed, were more robust and looked stronger and healthier. These were a bit leggy.

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Reviewed 12th September 2018 by Carolyn

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Reviewed 6th September 2018 by Helene

See the comment left for the cosmos "Cranberry Click".

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Reviewed 3rd September 2018 by Karin

due to the very hot weather plants didn't last very long this year, unlike last year.

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Reviewed 29th August 2018 by Barbara

Grew well. Why do I need more characters?????

Fabulous fillers

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Reviewed 4th January 2018 by Gilbey

I sewed these for the first time last year. They were strong lovely plants and flowered right through into late autumn.
They looked wonderful under the Nicotiana alata 'Lime Green' and frankly wherever else I put the excess plants.
Am about to reorder more seeds for this season.

Very good 'space filler'

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Reviewed 23rd July 2017 by Carmen Neumann

Seedlings started off slowly but really got going once I planted them out. They've been flowering ever since. Will definitely sow again next year.

Stunning blue salvia

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Reviewed 4th November 2016 by Janet Illman

I grew these from seedlings received in March this year and they still look good now, in November!! So easy to grow and requiring little attention & look gorgeous in the vase & in the garden, with a bit of back lit sunshine.

Excellent Flowers

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Reviewed 4th August 2016 by Heather Richards

These are excellent flowers. Very easy to grow from seed. They look very good in the border and around the edge of pots. Excellent, long lasting, cut flower.

A dream plant

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Reviewed 8th June 2016 by Katy Ling

I grew this plant for the first time last year in a newly landscaped garden and found that it gave me everything I was looking for - easy to germinate, fairly quick-growing, highly sought-after by bees, and low maintenance, requiring no dead-heading to go on well into Autumn. The blue bracts are very unusual, and, whilst it is not exactly clump-forming in itself, three or four plants together create a beautiful, spreading clump of blue and green, perfect for the edge of raised beds. It is ideal for filling gaps and lending softness against the rigidity of taller, more upright plants. All this, and hardly a nibble from our mollusc friends!


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Reviewed 5th September 2015 by Lorraine cooper

These look great in a vase with lime green annuals such as lime green nicotiana and euphorbia obligate. They are a lovely colour

I love it!

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Reviewed 27th July 2015 by Jo Marchant

I planted the seeds in the spring and patiently waited to see what the plant would look like in its full glory. I planted them at the front of the bed with white antirrhinum and ammi majus mixing in with them, and the whole show looks gorgeous. A lovely gentle plant that I think would mix well with many other plants, and I shall definitely be growing this again.