Delivery: Despatched from Early April

Stock Status: Pre order

£6.99 each

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Showmaster Onion Plants

  • Catalogue Code 1080-5312
  • Pack Contents: 25x Onion Plants
  • A whopper in size
  • Fantastic for exhibitions.
  • Amazing value for money due to its size.
  • Harvest August to October.

Huge size and flavour all in one onion. A proud exclusive to Marshalls and a real customer favourite this onion is a real attention grabber, fun to grow and fun to talk about If you have ever been to an exhibition before, then this show master onion needs little introduction to just how colossal it is. To put it into perspective these onions can reach up to a whopping 2kg each!

Don’t be put off if you have no intention of exhibiting. The show master is a great value for money addition for the home cook. Providing you with a very mild, sweet flavour to add to your dishes. A lot of our customers report having mini competitions between friends to see who can harvest the biggest onion.

Pot up around early to mid-April into 9cm pots. We then recommend that you harden off in a cold frame before planting out early May.


  • Will flower well in full sun
  • Recommended for Exhibition growing

Growing Calendar for Showmaster Onion Plants

  • Jan
  • Feb
  • Mar
  • Apr
  • May
  • Jun
  • Jul
  • Aug
  • Sep
  • Oct
  • Nov
  • Dec
Plant Outdoors

Great plugs, service and delivery.


Arrived in good condition with detailed instructions to deal with them on arrival


have re potted and are looking good

View All Growing Guides »

Our products are all grown with the utmost care and to high standards of quality. We regularly check our nursery stock to determine exactly when they will be at the optimum time for despatch.

We despatch our fresh, nursery-grown live plants (including vegetables, trees and flowers) when they are at a stage of growth ready for you, the customer, to plant on at home.

The delivery period shown on your order confirmation indicates when you can expect to receive your order and we will endeavour to despatch your plants in this period within 7-14 days