Zinnia 'Giant Dahlia Mix'

There's nothing nicer than the jumble of colours of these zinnia flowers in a jug on the kitchen table. The flowers are spectacular, huge and long-lasting. More
60 seeds 030043 £1.95 Buy 2+ at £1.75 each In stock
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5 seedlings 510104-5 £5.95
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Or buy this as part of our Really Good Cut Flower Seed Collection and Half-Hardy Annual Cutting Patch Collection.

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There's nothing nicer than the jumble of colours of these zinnia flowers in a jug on the kitchen table. The flowers are spectacular, huge and long-lasting; a wonderful mix of oranges, reds, pinks and yellows.

Zinnia elegans are one of my very favourite families for cutting, with a long picking season and excellent vase life.

You can also buy the seed mix in our beautiful Vase and Seeds Gift Sets

Genus Zinnia elegans
Variety Giant Dahlia Mix
Type Half-Hardy Annual
Border Position Middle
Soil Type Chalky, Sandy, Neutral
Scent Unscented
Site Full Sun
Moisture Moist but Well-drained
Height 1m (39in)
Spacing 30cm (12in)
Sowing, Seeds, Planting Sow under cover in individual cells in March-May (zinnias dislike root disturbance). Pinch out tips as you plant out after last frosts, or direct sow in May-June.
Care Tips It has a tendency to botrytis (a reason to think of using Bordeaux mixture or Sulphur). Do not overwater. This can be grown in a container pot.
Flowering July - first frosts, 12-14 weeks from sowing.
Vase Life 7 days. Strip bottom leaves.
Harvesting Flower production: 3 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
Direct sowing seeds

Learn how to get great results when direct sowing hardy annual seeds.

Annual flowers – create summer colour

Create summer colour with these unbeatable annual flowers.  Sarah's absolute favourites for reliability and colour.

How to grow zinnias

Find out how to grow zinnia, and why you should grow them in your garden.


Seeds Delivery - Items will be despatched in 2-3 working days.

Plant Delivery - When in stock, please allow up to 2 weeks for despatch.

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

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Zinnia 'Giant Dahlia Mix' reviews

* * * * * Average based on 4 reviews
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Reviewed 5th August 2017 by JACQUELINE BAILEY-TUFTS

Have grown Zinnias before from other companies but have been quite disappointed with the results. Thought I'd give these Zinnia seeds a go and they are wonderful. Wish I'd put them further back in the beds as they have grown nice and tall, but very sturdy.

Brilliant eye catcher

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Reviewed 23rd July 2017 by Carmen Neumann

I was worried these would not work having seen Sarah's video stating how warm it needs to be for them, but was pleasantly surprised. Will definitely grow more next year.

Add that extra zing to the border

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Reviewed 8th July 2017 by A Holloway

Really love these especially in a south facing border where they thrive. Rich colours and strong stems which don't need supporting. Mine grow to about 60cm max. This is the third year I've grown them successfully from seed

Brilliant colour

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Reviewed 17th November 2014 by ELIZABETH WALKER

Grow these every year from seed started inside. Grew to 8 ft this year and 2 are still in flower ........! Probably the most enquired after flower in our garden for its brilliant colour and rigid stems.