Potato grower Tom Sigurd Dokkedal from Reddal, in the south of Norway, started pre-sprouting his seed potatoes in January. Adding additional lighting for seven to eight weeks and keeping temperatures around eight or nine degrees Celsius has resulted in a head-start of two weeks, he told FreshPlaza in an interview.
“This year, the first potatoes were planted on 25 March, first covered in film, then in cloth. If temperatures remain stable, the cloth can be removed between 17 and 23 May.
The new potatoes are sensitive to temperatures. When it’s too cold, we cover them in an additional piece of cloth, and when it’s too warm, we’re constantly airing the potatoes. That doesn’t do much good for your night’s rest.”