My goodness! That really is deep. Thank you Roland. Ina Crossley Auckland New Zealand zone 10a On 30/11/2013 11:58 a.m., Bulborum Botanicum wrote: > I plant them 18cm deep > Full sun on rows like potatoes > > Roland > > R de Boer > 2238 Route de la Maugardiere > F 27260 EPAIGNES > FRANCE >