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Products > Senecio cylindricus
 
Senecio cylindricus - Narrow-Leaf Chalksticks

San Marcos Growers has permanently closed as a business. This is an archived page preserved for informational use.  
Image of Senecio cylindricus
[2nd Image]
Habit and Cultural Information
Category: Succulent
Family: Asteraceae (Sunflowers)
Origin: South Africa (Africa)
Evergreen: Yes
Flower Color: Cream
Bloomtime: Spring/Summer
Synonyms: [Kleinia talinoides ssp. cylindricus, S. vitalis]
Height: 1-2 feet
Width: 3-5 feet
Exposure: Full Sun
Seaside: Yes
Irrigation (H2O Info): Low Water Needs
Winter Hardiness: 25-30° F
May be Poisonous  (More Info): Yes
Senecio cylindricus (Narrow-Leaf Chalksticks) - A low growing succulent shrub to 18 to 24 inches tall and spreading to 3 to 5 feet wide with semi-prostrate stems that turn upright and are crowded at the tips with 3 to 5 inch long slender and slightly upcurved gray-green tubular leaves. The small rayless dull cream-colored flowers appear in corymbs in late spring to early summer.

Plant in full sun to light shade in a well-drained soil and irrigate little to occasionally. Hardy to 20-25F. This plant makes a great medium height ground cover with fine texture that contrasts well with broader succulent foliage. There are many great plantings of this plant in the Santa Barbara area, including a nice large planting under Aloe barberae and Aloe plicatilis in the northeastern corner of Alice Keck Park Memorial Gardens, a beautiful city park in downtown Santa Barbara. The pictures on our website are of this planting.

Senecio cylindricus is native to the Eastern Cape of South Africa from along the coast from Alexandria to East London and - an area that is transitional between the winter rainfall Cape Province to the west and summer rainfall received at East London and further to the northeast. As such this plant seems to thrive with summer irrigation but does well if withheld then as well and tolerates winter rainfall if soil drains tolerably well.

We continue to list this plant as Senecio cylindricus but acknowledge that it is correctly considered to be a subspecies of Senecio talinoides (with the lower growing but similar S. mandraliscae) in Gordon Rowley's treatment of Senecio in his own "Succulent Compositae" (Strawberry Press, 1994) and in Urs Eggli's "Illustrated Handbook of Succulent Plants: Dicotyledons" (Springer 2002). It is more often found under the name Senecio vitalis, a name originally given to it in 1906 by Nicholas Edward Brown (1849-1934) of Royal Botanic Garden, Kew but the name Kleinia (=Senecio) cylindricus given to the plant by Alwin Berger a year earlier in 1905 has precedence. Recent treatment by some botanists have put this plant (and many other Senecio) back in the genus Kleinia, but for convenience and until this gets sorted out and better recognized we continue to list them all in the genus Senecio so not to confuse customers or our staff. 

The information displayed on this page about Senecio cylindricus is based on our research conducted about this plant from books in our nursery library as well as from information that is provided by reliable online resources. We also have included our own observations made about it as it grew in the nursery gardens and other gardens visited, as well how the crops of this plant performed in the containers when we had them in our nursery field. We 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.

 
We closed for regular business at the end of 2025 in order for the property to be developed for affordable housing.
Our gates remain closed but we will open them by appointment to interested parties as we liquidate remaining supplies and equipment.
 
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