Scientific: Convolvulus cneorum
Common: bush morning glory, silver bush, white morning glory
Family: Convolvulaceae
Origin: Southern Europe's western and central Mediterranean regions

Pronounciation: Con-VOL-vu-lus sa-NOR-um

Hardiness zones
Sunset
7-9, 12-24
USDA 8 marginal, 9-11

Landscape Use: Large scale xeriscape ground cover in mass, accent plant, rock gardens, xeric and oasis design motifs.

Form & Character: Woody perennial compact evergreen sub-shrub, domelike and spreading.

Growth Habit: Symmetrically mounding and spreading to 2 feet tall with 4 feet spread.

Foliage/texture: Heavily pubescent to tomentose, grayish lanceolate-shaped leaves to 3 inches; medium texture.

Flowers & fruits: Pinkish flower buds followed by brilliant white paper-thin morning glory flowers w/ yellow throats, profuse, followed by pink post flowering sepals, fruit inconspicuous.

Seasonal color: Pink followed by brilliant white masses of flowers in Spring (usually second and third weeks of March), otherwise silver gray foliage rest of year.

Temperature: Hardy to 10 to 15oF.

Light: Full Sun

Soil: Fast draining soil is an absolute must with this plant. Bush morning glory grows best in sandy or gravelly soils that are slightly alkaline.

Watering: Does not tolerate wet, over-watered soil conditions. In Phoenix, there is usually no need to apply supplemental water during the winter months, but supplemental water is needed at least every two weeks during the summer.

Pruning: Little to none. Vigorous plants can be infrequently and lightly sheared in late April after flowering, otherwise there is no need to prune.

Propagation: Seed, or softwood cuttings, rooted in peat and perlite with 1,000 ppm IBA in April or September.

Disease and pests: Highly prone to attack by fungal root rot pathogens if soil drainage is poor.

Additional comments: If drainage is good then this plant will grow as well in Phoenix as on the sandy beach dunes of the central California coast. It is fire retardant if healthy (important in Southern California chaparral). Provides a consistent intense spring bloom each year. Keep in mind its eventual spread as the biggest landscaping problem is planting this nice sub-shrub in locations that are too small and narrow to accommodate its spread.