Potentilla Recta 'Warrenii'
This vigorous and very old favourite produces strong clumps of divided foliage, above which arise large sprays of bright canary-yellow flowers over a long period throughout spring and summer. It may self-seed when happy but never becomes a nuisance here.
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:400 (Approx)