This Fantastic Heat Prepared Onion Collection Has Been Specifically Heat treated For 20 Weeks To Minimise Bolting. Heat Preparation Will Also Extend The Growth Period Of The Onions So That Much Greater Yields Can Be Achieved.our Heat Prepared Collection Includes 1 Pack Each Offen Early A Truly Superb Onion Which Produces One Of The Earliest Crops From A Spring Planting.the Bulbs Will Keep Much Better Than Other Early Types – Right Through Until The End Of Winter. The Sets Have Undergone A Partial Heat Preparation To Improve Performance And Prevent Bolting.red Fen A Clear Winner In Our Trials
