Save 14%
Red Onion Sets

Red Onion Sets 'Red Karmen' (500g)

Out of Stock / Season
RRP: 3.49
Price: 2.99
You save: €0.50 (14%)
Bulk Discounts
Quantity 3+
Price 1.79

video guides available

Red Onion Sets - Description

  • Red Onion Sets
  • Variety: Red Karmen
  • Volume: 500 grams (Approx. 130 - 150 Sets)
  • Colour: Red Skinned & Flesh
  • Bulb Size: 14/21mm
  • Produces Medium Sized, Globe Shaped Bulbs
  • Stores Well
  • Hardy Onion

Red Onion Sets - Sowing Instructions

  • Sow in mid March or earlier under cover
  • Location: Full sun, well drained soil
  • Prepare by adding manure the previous Autumn
  • Space distance: Rows 30cm apart with sets spaced 20cm apart in the rows
  • Planting Depth: Place sets, pointed end up, just at soil surface
  • Lift once foliage turns yellow; water crop & lift slightly with garden fork
  • Harvest crop 2 weeks later in sunny weather

Red Onion Sets - Uses

  • Suitable for fresh market
  • Bunching or normal large onions
  • Perfect for cooking

Red Onion Sets - Advantages

  • No thinning required
  • Less likely to bolt than if grown from seed
  • Low cost
  • More reliable than if grown from seed
  • Less likely to be attacked by the onion fly than those grown from seed


  • Sowing Instructions
  • Crop Maintenance
  • How to Harvest
  • Storage
  • Pests & Diseases

Sowing Instructions

  • Sowing time: From mid March, assuming frost has passed
  • Sowing Location: Sow direct into rows
  • Sow 1 set every 10cm
  • Alternatively sow them every 5cm & thin later
  • The closer you sow your onion sets the smaller your harvested onions will be
  • Prepare soil prior to sowing, dig & manure your soil the previous autumn if possible
  • A sunny site with good drainage is ideal
  • To sow simply push the set into the soil
  • Sowing depth: onion set's tip should be just below soil surface
  • Space rows 15cm apart

Crop Maintenance

  • Keep moist
  • Weed regularly during summer months
  • Check sets early to see if birds have lifted them from the soil
  • If so, simply re sow them
  • Apply a general fertilizer if needed and rake the surface on a dry day
  • If your soil is a heavy clay it is recommended that you improve you soils drainage
  • Alternatively place a small amount of horticultural grit beneath seeds prior to sowing


  • Harvest when the bulbs have swollen and when the stems turns yellow and falls over
  • Using a garden fork, slightly lift the onions in their position. lift to snap the onion's roots preventing further growth
  • Leave for 14 days and carefully remove on a dry day
  • You can speed up the process by bending and tieing the stems once they start to yellow
  • On a dry day lift your onions and place them out in the sun
  • Depending on the size of your onions and weather conditions it can take up to 4 weeks for the onions to dry


  • Consume any damaged bulbs first
  • Short term storage in the fridge
  • Can be stored for up to 7 months in a cool dry place
  • You can also tie up your bulbs using their own stems or some cord

Pests & Diseases

  • Bird attack is most likely the biggest threat to onions
  • Netting should be used to protect against birds that pull up roots
  • Other pests and diseases include: Onion fly, root fly, bolting and downy mildew


Onion Sets

Click here to leave review
Great quality and size of sets are consistent, fast delivery also

Due to increased volumes in orders, please allow additional time for delivery

Note: We don't ship plants on Fridays due to the extended period they would remain without light & water

Here at we aim to provide a fast, reliable & low cost delivery service

Shipping Options & Rates

  • Standard Courier Delivery With Fastway (3-5 Working Days)
    • Cost is €4.95 on Orders Below €75
    • Free Delivery on Orders Above €75
    • Rep. of Ireland & Northern Ireland Only
  • Express Courier Delivery With Fastway (2-3 Working Days)
    • Cost is around €5 extra for express delivery
    • This service guarantees that any order placed before 4pm will ship from our depot the same day on the next day delivery service *
    • Rep. of Ireland & Northern Ireland Only
  • Express Delivery With DPD (2-3 Working Days)
    • Cost is €3 extra
    • This service guarantees that any order placed before 4pm will ship from our depot the same day on the next day delivery service *
    • Rep. of Ireland & Northern Ireland Only
    • This services comes with text alerts and timed delivery slots which the customer can change to suit themselves
  • 'Seed' Postal Delivery Option ***
    • Cost is €2 - Packet of Seeds ONLY Orders
    • Note: Does Not Apply to Seed Potatoes, Bulbs or Sets ***
    • Rep. of Ireland & Northern Ireland Only
  • Great Britain
    • Cost is €10
    • UK shipping fee covers parcels up to a total weight of 20Kg
  • Western Europe
    • Note: There is no free delivery for Western Europe Deliveries

Bulk Bags & Large Item Pallet Deliveries

  • Bulk bags & large orders are shipped via pallet couriers on a rigid lorry
  • Delivery is to kerbside only
  • If road access to your site is tight, then please advise us before purchasing
  • Please Note: We cannot guarantee next day delivery on pallet deliveries
  • Also, we cannot guarantee delivery on a specific day (Please allow 1-3 days for delivery)
  • It's always best to order well in advance to avoid disappointment
  • Cancellation of pallets when items are already in transit will incur a 40 euro per pallet cancellation fee (To cover return delivery costs)
  • Where pallet delivery can not be made due to site access, a 40 euro per pallet cancellation fee will apply (To cover return delivery costs)

International Delivery Prices & Times

  • Please note max weights below, heavier orders may require additional payment
  • We will contact you to discuss, if max weight of order exceeded


  • The shipping fee is fixed for an order, regardless of the number of items bought
  • All courier orders require signed proof of delivery & the customer must be contactable by phone
  • We do not offer a weekend delivery service (Mon-Fri Only excl. Bank Holidays)
  • * Our courier achieves a 98% success rate on next day deliveries
  • ** Seed postal option applies to seed ONLY orders & is available in all 32 counties of Ireland
  • *** Does not apply to seed potatoes, bulbs or sets
Orders over €75, get
Get Free Delivery free delivery

Associated Products Associated Products