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Grow Sow Greener

Swiss Chard Seeds - Rainbow Mix

Swiss Chard Seeds - Rainbow Mix

Regular price £1.99
Regular price Sale price £1.99
Sale Sold out  Ships Tuesday 28th May 

Swiss chard is a beginners plant that pro gardeners love too, and our Rainbow Mix is the most stunning combination of all. Vivid red, yellow and white stems support a lush dark green canopy worthy of any ornamental border or flower garden. Swiss chard is healthy, tasty and versatile in the kitchen. Easy to cultivate and with a broad tolerance of soils and seasons, this is a solid favourite at Grow Sow Greener and around the UK.

  • Pack size: 50 seeds
  • Time to germination: 5 -10 days
  • When to sow summer crop: April
  • When to sow winter crop: Mid July
  • Spacing: 30cm
  • Soil preference: Broad tolerance
  • Light preference: Full sun, part shade
  • When to harvest: Year-round

How to grow Rainbow Mix Swiss Chard from seed

Sow your Swiss Chard Rainbow Mix at a depth of 2cm. Successful germination occurs anywhere between 10 and 27 degrees, while 18 degrees is ideal. Sow direct or in coco pots in a sheltered position in the garden, greenhouse or under lights inside, and plant out, pot and all once robust enough to survive a passing slug or a stormy day.

Once established, swiss chard is easy to grow and require little attention. They benefit from weeding from time to time, but good crops are attainable for even the most distracted gardener.

What to feed your Swiss Chard plants

Swiss chard is extremely tolerant of soil conditions and nutrients, but they will reward you when given rich, moist soil loaded with plenty of organic matter. Add well-rotted manure and a few handfuls of fish, blood and bone meal with some volcanic rock dust and kelp powder to give them a balanced and diverse diet for strong organic growth and cropping over the year. This diet will also help the plants to form strong, well-developed immunity.

By preparing the hole/soil with the above organics before planting, you feed the whole soil ecosystem, which feeds your chard plants a much broader diet. Off the shelf bought chemical fertilisers are limited in their scope and kill life in the soil web, trapping the gardener into spending more time and money repeatedly fertilising. 

Keeping pests away

Good hygiene and nutrition are the best remedies. Adequate spacing and airflow coupled with a well-balanced diet, keep plants healthy and in the best shape to fend off illness and pests.

As this is such a beautiful variety, it's worthwhile to plant a few clumps in separate locations along an ornamental border and veg patch, limiting possible infestation damage. When ordering Rainbow Mix Swiss Chard from Grow Sow Greener, you'll receive British wildflower seeds loose in your pack, which will look beautiful and attract beneficial insects to your plot.


Delivery Costs

Our shipping is broken down into two categories and are dispatched the same or next day as standard.

1. Unlimited "Small" (Garden) Seed Packets:

- Including wooden plant markers and sprouting bags.

- £1.99 - Standard Delivery 2 - 4 business days.

- £4.90 Express Delivery 1 - 3 business days

2. Everything Else - Sprouting and Microgreen Seeds, Growing Equipment, Gifts and Grow Kits:

UK Mainland.

- £3.85 - Standard Delivery (2 - 4 business days) on orders between 0 and 2kg.

- £6.50 - Next Day Courier Service on orders 0 - 4.5kg.

- £8.95 - Next Day Courier Service on orders over 4.5kg.

- Contact us for a quote on orders over 26kgs.

Ireland, Northern Ireland, Isle of Man, Guernsey and Jersey.

- £9.45 - Standard Delivery (2 - 4 business days) on orders between 0 and 2kg.

- £23.50 - Standard Delivery on orders 2kg - 26kg.

- Contact us for a quote on orders over 26kg.

The EU, Switzerland and Rest of World.

Get in touch for equipment sales to the EU and the rest of the world for a competitive shipping quote. Unfortunately we cannot yet post seeds outside the UK.

Delivery and Packaging

All products are packaged plastic free as standard. Your garden seeds are sealed for freshness inside white glassine envelopes which are a water/vapour resistant compostable paper product whilst your Microgreen and Sprouting Seeds arrive in resealable zip lock pouches made from GMO free vegetable starch which are further heat sealed to ensure these great products reach you safely!

Returns Policy

We hope you are loving your purchase however we understand that sometimes things don't go as planned and returns and refunds are necessary. Please refer to the following return and refund policies at

My product is damaged defective or you shipped me the wrong product.

We're sorry about that and understand your frustration! We would love to offer you a refund or a replacement. Please contact us at within 30 days of purchase for a full refund or replacement. 

I ordered the wrong product or simply changed my mind.

No worries, we will refund you the full amount (minus the shipping charges) provided the items are returned in new condition and in original packaging. Once received we will issue your refund however you will be responsible for return shipping costs for non defective products.

Please post to:

Grow Sow Greener

RETURNS (order number)

5 Longfields

West Alvington

Devon TQ73QG


Guaranteed to grow promise.

Should you have absolutely any problems issues or difficulties getting your seeds to germinate or problems/queries regarding our grow kits or equipment, please get in touch at and we will strive to help you out via email, call or video call.

All our seeds and products have been tested here by us however if we still cant help you get growing we will offer a free replacement.

Unfortunately, we cannot accept returns on gift cards.

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