Romneya coulteri tree poppy – This large perennial creates a shrub-like effect in summer, with many upright, 1 to 2m branching stems. Clothed in leathery, silver-grey leaves & spectacular white poppy-like flowers with golden-yellow centres. It thrives best in a warm, sunny sheltered position. Partial Sun, Full Sun. H: 150cm – 250cm W: 150cm – 250cm approx.
For best results, sow Romneya coulteri tree poppy seeds immediately onto a good soil-based compost. Cover the seeds with fine grit or compost to approximately their own depth. They can be sown at any time, and germination can sometimes be quicker if kept at 15 to 20 degrees C. It is often best to wait for natural germination, as many seeds have built-in dormancy mechanisms, waiting for natural spring germination, hence giving them a full season of growth.