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| Category: Perennial |
| Family: Asteraceae (Sunflowers) |
| Origin: Morocco (Africa) |
| Flower Color: White |
| Bloomtime: Fall/Winter |
| Synonyms: [Chrysanthemum, Rhodanthemum, Leucanthemum] |
| Height: <1 foot |
| Width: 1-2 feet |
| Exposure: Full Sun |
| Summer Dry: Yes |
| Irrigation (H2O Info): Low Water Needs |
| Winter Hardiness: 10-15° F |
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Pyrethropsis hosmariense (Moroccan Daisy) - A perennial or sub-shrub that grows to 8 inches tall by about 2 feet wide with silvery finely cut foliage and 2 inch wide flowers composed of white ray flowers and large yellow centers composed of the disk flowers. The flowers rise above the foliage over a long period, with the peak being in winter. Plant in full sun in a well-drained soil and irrigate occasionally. It is drought tolerant and hardy to at least 13° (The RHS listing is H4 meaning hardy throughout the British Isles) This plant grows well in our mediterranean climate but only tolerates winter rainfall if planted in a sunny location on a mound or in well-drained soil. This plant is one of 12 species in the genus, with 11 coming from North Africa and one from southern Spain. Originally part of the large genus Chrysanthemum (as Chrysanthemum hosmariense), it was split off in 1993 in a monograph by Kare Bremer & Christopher Humphreys in the Bulletin of the Natural History Museum of London. While working on this monograph the authors had proposed the name Pyrethropsis, but changed it prior to publishing the name and the following year in Kare Bremer's Asteraceae: Cladistics and Classification (Timber Press, 1994) the name of the genus was listed as Rhodanthemum, making the correct name Rhodanthemum hosmariense ( Ball ) B.H.Wilcox , K.Bremer & Humphries. Unfortunately the originally proposed name Pyrethropsis hosmariense was published in several books while the name was still being being worked out and both Rhodanthemum hosmariense (Ball ) B.H.Wilcox , K.Bremer & Humphries and Pyrethropsis hosmariense (Ball) "Wilcox, K.Bremer & Humphries" are listed as valid names on the Plant List, the collaboration between the Royal Botanic Gardens, Kew and Missouri Botanical Garden and on the the Global Compositae Checklist. This is obviously in error and likely the authors intended name of Rhodanthemum hosmariense is correct, but since we have been growing this plant since first listing it in 1994 as Pyrethropsis hosmariense, we will continue to list it under this name until this issue gets fully resolved. This plant is also commonly sold under the invalid name LeucanthemumIt hosmariense. This beautiful plant received the Royal Horticultural Society's Award of Garden Merit (AGM) in 1993.
The information about Pyrethropsis hosmariense displayed on this page is based on research conducted in our nursery library and from online sources we consider reliable. We will also relate those observations made of this plant as it grows in our nursery gardens and in other gardens that we have visited, as well how the crops have performed in containers in our nursery field. We will also incorporate comments we receive from others and welcome hearing from anyone who has additional information, particularly when they share cultural information that would aid others in growing it.
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