Iris Laevigata 'Colchesterensis'
This superb form of Iris laevigata which was selected here and comes pleasingly true from seed, has gorgeous, sumptuous white flowers, heavily painted in deepest navy blue. It is fine in the ordinary garden but outstanding in damp or wet soil.
Sow immediately at any time onto preferably a soil-based compost, covering with fine grit to approximately their own depth. Germination MAY be quicker if kept at 15 to 20 degrees C. but many seeds WILL NOT come up the year they are sown, needing winter chilling after sowing, and ONLY come up with natural spring germination.
Seeds / gram:80 (Approx)