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Products > Drosanthemum speciosum
 
Drosanthemum speciosum - Royal Dewflower

Note: This plant is no longer in stock. This is an archive page preserved for informational use.  
Image of Drosanthemum speciosum
 
Habit and Cultural Information
Category: Succulent
Family: Aizoaceae (Ice Plants)
Origin: South Africa (Africa)
Evergreen: Yes
Flower Color: Orange Red
Bloomtime: Spring/Summer
Synonyms: [Mesembryanthemum speciosum]
Height: 2-3 feet
Width: 2-4 feet
Exposure: Full Sun
Summer Dry: Yes
Irrigation (H2O Info): Low Water Needs
Winter Hardiness: 25-30° F
Drosanthemum speciosum (Royal Dewflower) - A small subshrub that can grow up to 2 1/2 feet tall with a solid cover of small 3/4 inch long tubular upwardly curved succulent green leaves on narrow woody stems from which the showy orange red flowers burst into bloom in late spring into summer. In the wild the flower color ranges from yellow through dark red but ours grown from cuttings are a dark orange-red. These flowers, which are open in mid-morning through the afternoon and may not open at all on cloudy days are a lighter color near the center with noticeably dark stamen filaments. These dark filaments are a trait they share with Drosanthemum bicolor and Drosanthemum micacans. Plant in full to part sun in a well-drained soil and irrigate only occasionally. Cold hardy to around 25°F. This plant is best used as a small specimen and can be fairly long lived in the garden; specimens in gardens in the Santa Barbara area 8 years old or better still look stunning each spring. It is not been known to have naturalized in California, though there has been some confusion between this plant and Malephora crocea, which is a plant that has naturalized in coastal southern California. Drosanthemum speciosum is native to the Western Cape of South Africa, though its type locality is not now known. The plant was first described as Mesembryanthemum speciosum in 1795 by Adrian Hardy Haworth in his Observations On The Genus Mesembryanthemum but later reclassified as Drosanthemum speciosum by the German botanist Martin Heinrich Gustav (Georg) Schwantes in 1927. The name for the genus comes from the Greek words 'drosos' meaning dew and 'anthos' meaning flower in reference to the glistening bladder cells on the leaves of some species that resemble drops of dew and it is also this that gives plant in this genus the common name Dew Flower. The specific epithet is from the Latin word 'specios' meaning "beautiful", "brilliant" or "showy" in reference to the vivid show of flowers in late spring. Our original stock plant from John Bleck. 

Information displayed on this page about Drosanthemum speciosum is based on our research conducted about this plant in our nursery library as well as from information provided by reliable online resources. We also include our own observations made about it as it has grown in the nursery gardens and other gardens visited, as well how the crops of this plant performed in the containers in our nursery field. We will also include comments received from others and welcome hearing from anyone who has information about this plant, particularly if it includes cultural information aiding others to better grow it.

 
San Marcos Growers closed for regular business at the end of 2025 as the property is being developed for affordable housing.
While our gates remain closed, we will open them by appointment so we can liquidate remaining plants, supplies and equipment. The plants remaining in the field are listed on our Live Inventory Page.
 
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