Bush Morning Glory: Silvery Ground Cover for Hot, Dry Sites

The silvery foliage and white flowers of bush morning glory (Convolvulus cneorum) make it a standout in the landscape. Not to be confused with invasive bindweed (Convolvulus arvensis), this evergreen ground cover offers a visually cooling element that contrasts beautifully with darker greens. Pinkish buds open each morning to reveal white flowers with yellow centers, closing again at night—true to its common name.

Beyond beauty, it's drought tolerant and thrives in hot, reflected heat, excelling in climates mirroring its native Mediterranean habitat with dry, well-drained soils and sporadic rainfall. Despite its delicate appearance, it performs exceptionally in arid and desert landscapes.

Plant Profile

• Botanical name: Convolvulus cneorum
• Common names: Bush morning glory, silver bush
• Origin: Mediterranean regions of Western and Southern Europe
• Hardiness: USDA zone 8 (hardy to 10°F)
• Water: Drought tolerant once established; best with weekly summer watering, twice monthly in spring/fall, monthly in winter; well-drained, slightly alkaline soil
• Light: Full sun best; tolerates light shade
• Mature size: 2 ft tall, 4 ft wide
• Benefits: Drought tolerant; attracts butterflies
• When to plant: Spring or fall

Distinguishing Traits

Silvery foliage transforms in spring with light pink buds that contrast beautifully, opening to bright white petals that nearly hide the foliage. Flowers close at evening, reopening next morning. Bloom typically heralds spring, continuing through summer into early fall in mild Mediterranean climates; in deserts, flowering is shorter but impressive in spring only.

Even out of bloom, the evergreen, silvery-gray foliage adds interest. Tiny leaf hairs give a silvery appearance and soft feel. The plant gradually spreads to 4 ft wide.

Landscape Uses

Plant where you'll enjoy morning glow from silvery foliage and white flowers. Short stature and spreading habit suit planting under trees with light shade. Thrives in raised beds and containers due to need for well-drained soil. Ideal for hot, reflected sun areas around patios, courtyards, or pools.

Silvery foliage pairs perfectly with darker-leaved plants like autumn sage (Salvia greggii), Cleveland sage (Salvia clevelandii), 'Little John' bottlebrush (Callistemon viminalis 'Little John'), firecracker penstemon (Penstemon eatonii), and Goodding's verbena (Glandularia gooddingii).

Planting & Care

Plant in well-drained soil with full to filtered sun. Avoid wet soil; prefers slightly alkaline soils common in the western U.S. If drainage is poor, amend with compost or plant in a container or mound.

Low maintenance but benefits from pruning back by at least half every year or two in midwinter to prevent legginess and stimulate new growth.