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Phyteuma orbiculare is a herbaceous perennial. It is part of the Campanulaceae family of plants. They also call it the Round-headed Rampion, Round-headed Horned Rampion, or Pride of Sussex. Other synonyms include Ranunculus orbiculares, Phyteuma tenerum. The plant is native to Europe from the Pyrenees to the Balkans.
It grows to 50cm or 20in tall. It has an erect stem. Phyteuma orbiculare has different types of leaves. The base leaves are ovate, lanceolate. They are serrated and petiolated. The leaves are narrower, at the top of the stems. They are lanceolate and more linear.
The flowers grow in an erect pinnacle. They are about 3cm or 1.2in wide. The color is bluish-violet. They are tube-shaped with a small opening at the top. Phyteuma orbiculare flowers late spring into summer or from May to August. The flowers are hermaphrodite. The fruit is a capsule. Each capsule contains a lot of small seeds.
Grow Phyteuma orbiculare in the sun or partial shade. Plant it in sandy, loamy, and well-drained soil. Propagate by seed or division in spring or basal cuttings in spring or summer.
Where can I buy Phyteuma orbiculare plants or seeds in the USA? I am also looking for Calceolaria integrifolia plants. Thanks, Karl
Hi Karl, I don’t sell flowers, just write about them. But based on your questions did some research. I believe you can find Calceolaria integrifolia in U.S. I noticed it on a site Annie’s Annuals. I would suspect you can also find it at other nurseries near you as well. But Phyteuma orbiculare I could not find anything local to U.S. and I know there are restrictions in importing seeds or plants to U.S. I am not currently in U.S. but I am sure you can search online and see if you get better results than I did. Great to hear from you. Best, Dino