Quite an incredible plant for the back of the border, we had never previously heard of this plant or family! Tall, strong, fabulous, arching, cane-like stems sprout large, pendulous, terminal sprays of creamy-yellow-green flowers, and are clad in palmate leaves resembling the famous drug! This is perhaps the tallest herbaceous perennial you can grow, and is yet another reliable "baffle-the-expert" plant.
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.