Organic Cucumber Seeds - Marketmore


Grow delicious organic cucumbers with this RHS award-winning variety. Popular in the UK, our Organic Marketmore Cucumber Seeds produce a traditional cucumber with great flavour consistently throughout the season, regardless of what the weather brings. Our GMO-free Organic Marketmore Seeds give you full confidence in the quality of your produce and the free nasturtium companion plant seeds included in your pack should help you grow greener in no time.


Organic Marketmore Cucumbers are our favourite ridge type. Well suited to the Uk’s climate, this variety produces reliable crops of 20cm long fruits with a taste comparable to the greenhouse varieties, even in poorer summers. They are heirloom and open-pollinated, so save your seed for next season! Marketmore Cucumber plants were a deserving RHS AGM winner.

  • Pack size: 20 seeds
  • Type: Ridge type- outdoor
  • Time to germination: 7-10 days
  • When to sow inside: March – April
  • When to sow outside: May - June
  • Spacing: 90cm +
  • Soil preference: Fertile moist rich
  • Light preference: Full sun
  • When to harvest: June – October

How to grow Organic Cucumber Marketmore from seed

Cucumbers are a delicious and easy plant to grow in your garden and come in two types. Should you choose a ridge type of cucumber such as Marketmore, a greenhouse is not a necessity as they have been bred for, and thrive in cooler conditions.

When sowing your Organic Cucumber Marketmore seeds (on their sides) at a depth of 1cm, consider the temperature they will be exposed to. 18-20 degrees is ideal; however, cucumber seeds can tolerate somewhat lower temperatures once germinated. After germination, place on a sunny windowsill. or, as we recommend, under LED lights to grow on and develop. Cucumbers are susceptible to root disturbance, and therefore, we recommend planting seeds in 8cm thin-wall pots. Plant out, pot and all, once your greenhouse or garden can sustain a temperature of 15 degrees.

Cucumber plants are heavy feeders and enjoy warm, rich, moist soil, loaded with plenty of organic matter. Add a few handfuls of fish, blood and bone meal with some volcanic rock dust and kelp powder to give them a rich, balanced and diverse diet for strong organic growth and cropping over the season. Keep cucumbers well-watered, and this diet will help the plants to form strong, well-developed immunity.

Before planting, prepare the hole/soil with the above organics and apply a side dressing of phosphorus-rich bone meal or wood ash just prior to fruiting, to ensure that you are feeding the whole soil ecosystem, which in turn feeds your cucumber 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 time and money repeatedly fertilising. 

Organic Cucumber Marketmore has good immunity to pests and disease and is resistant to scab, downy and powdery mildew, leaf spot and anthracnose. Tall vining plants, we recommend training cucumbers up garden twine. It’s a commercial technique, far superior in terms of time/labour, effort and effectiveness to staking and tying in. Simply secure a length of twine above and let it hang down to your seedling. As your cucumber plant grows, wind the main stem around the twine. If you must stake, drive the stakes in at an angle, well clear of the root zone. Organic Cucumber Marketmore, being a ridge variety, will also be very happy sprawling over the ground if you have space. There is no need to pick the male flowers; however, to avoid bitterness, keep the ground moist.

When ordering Organic Cucumber Marketmore Seeds from Grow Sow Greener, you will receive free nasturtium seeds. A beautiful plant that add interest and beauty in its own right and is a great companion for cucumbers.  Growing nasturtiums a distance away from your veg will help lure aphids away, whilst giving you delicious red flowers and peppery young leaves for adding to salads.

Shipping & Delivery

Shipping & Delivery

Delivery Costs

UK, N.Ireland and Scotland:

- Spend over £45 for FREE UK delivery.

- £1.95 postage on unlimited packets of all small seed packs (excluding Microgreen Seeds and Sprouting Seeds)

- £4.90 postage on all Microgreen Seeds, Sprouting Seeds and all other equipment

- £6.85 postage on all orders of combined small seed packs and parcels under £45

Delivery Information

The prices quoted are for UK mainland addresses. Deliveries to parts of Scotland, the Scottish Highlands and Islands, the Channel Islands, the Isle of Man and the Isle of Wight may incur an additional postage cost to the customer. In such circumstances, we will contact customers to let them know of any additional cost and offer the choice of whether to proceed or cancel their order.

Whenever possible, goods will be dispatched by Courier post within 3-5 working days from the date of purchase. Due to our delivery being outsourced, we cannot always guarantee next day delivery, so please allow for this. Please bear in mind there may be delays when ordering over weekends and national holidays when placing your order. If an order is needed for a definite date, please contact us prior to ordering, so we can advise beforehand.

In the event that you select a business address, we shall be deemed to have delivered your order to its intended recipient by delivering it to the reception area of the business address.

We will deliver to the address as you enter it and can not accept any liability for late or failed delivery if the quoted address is incorrect. Additional charges will be made for redirection or for re-delivery due to postcode error. We advise that if you are not sure of the address you should check it using the Post Office postcode and address finding service.