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Onion Sets - Fen Early (Heat Prepared)

  • Catalogue Code 1040-6031
  • Pack Contents: Approx. 75 Fen Early Onion Sets

A superb onion producing one of the earliest crops from a spring planting.

Fen Early keeps much better than other early types - until the end of winter.

Special Note: These sets are specially heat-treated for 20 weeks to minimise bolting. Heat Preparation also extends the growth period which means that greater yields can be achieved.

Sets are released from our preparation rooms just as soon as they are ready for planting.


  • F1 Hybrids are crossed varieties that are exceptionally vigorous and longer lasting

Growing Calendar for Onion Sets - Fen Early (Heat Prepared)

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

Onion Sets - Fen Early (Heat Prepared) 1040-6031

Prevent and Supress onion white rot

White rot is a disease that affects bulb vegetables like onion and shallots. Once you’re onion crop’s got it, it’s impossible to cure as such and you’ll need to stop growing onions in the same spot for at least eight years. You’ll recognise it at harvest time by fluffy white mould with black speckles that grows around the base of the bulbs.

Have no fear there’s a great way you can prevent it getting to your onions in the first place!

Before planting your onions plant a crop of green manure called Caliente mustard. It’s a great organic means of creating a soil environment that’s uninviting to the disease.

Caliente mustard is a known as a bio-fumigant and once it’s chopped up and dug into the soil, it releases a natural gas that repels the pathogens that cause the rot along with many other soil diseases.

Just sow a pack from any time between March and October for a quick crop before your autumn-planting-crops or sow in November to overwinter for planting crops in spring. Just before it flowers, cut it down and dig well into the soil.

Caliente Mustard single packs can be purchased here.

Caliente Mustard double packs can be purchased here. 


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A favourite of mine they don't fail and yield well I have only just finished last years crop so they keep well by platting and hanging



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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