Phoenix's Best Blue-Flowering Trailing Groundcover for Full Sun

Ground Morning Glory (Convolvulus sabatius) is one of the most distinctive and eye-catching groundcovers available for Phoenix Valley landscapes. Its cascading habit and continuous sky-blue to lavender blooms create a soft, colorful carpet that sets it apart from the typical desert palette of greens and browns. It stays low at just 6–12 inches tall while spreading 1–2 feet, making it ideal for edging, slopes, containers, and spilling over walls. Once established, it handles Phoenix's heat and dry conditions with minimal supplemental water. Whether you're softening a retaining wall in Chandler, filling in a rock garden in Scottsdale, or lining a path in Tempe — Ground Morning Glory brings true Mediterranean charm to the desert landscape.

Ground Morning Glory Plant Details

Ground Morning Glory Uses in Phoenix Landscapes

Cascading Wall and Slope Plant

Ground Morning Glory shines when planted at the top of a retaining wall or raised bed, where its trailing stems can spill gracefully over the edge and display its blue blooms at eye level. It's equally effective on slopes and berms where its low spreading habit helps stabilize soil and suppress weeds. The sky-blue flower color is a stunning contrast against the warm tones of Arizona block walls and decomposed granite in Scottsdale, Gilbert, and Mesa landscapes.

Rock Garden and Xeriscape Accent

The soft texture of Ground Morning Glory's foliage and its vibrant blooms look exceptional tucked between boulders and desert rocks. It fills in the spaces between larger xeriscape plants naturally and adds a pop of cool blue color to the typically warm-toned palette of Arizona xeriscapes. Plant 18–24 inches apart in rock garden settings to allow each plant to spread naturally without competing. Pairs beautifully with Desert Marigold, Angelita Daisy, and Autumn Sage.

Pathway and Edging Border

At just 6–12 inches tall, Ground Morning Glory is perfectly scaled for low edging along pathways, driveways, and garden borders. The continuous blooms keep the border looking colorful throughout the growing season with almost no maintenance required. Space plants 12–18 inches apart for a dense, tidy border along walkways in Peoria, Glendale, or Surprise front yards.

Container and Patio Planting

Ground Morning Glory performs exceptionally well in containers and raised planters on sunny patios. Its trailing habit creates a natural spilling effect over the rim of pots, and the blue flowers are a welcome complement to warm-toned terracotta containers common in Arizona-style outdoor spaces. It also works well in hanging baskets where the trailing stems can cascade freely.

Best Time to Plant Ground Morning Glory in Phoenix

Fall (October–November) is the ideal planting window — warm soil encourages quick root establishment while cooler air temperatures reduce transplant stress. Plants establish over the winter and spring, entering their first Phoenix summer with a fully developed root system. Spring planting (February–April) also works well. Avoid summer planting if possible — although Ground Morning Glory can handle heat once established, the combination of transplant stress and extreme summer heat significantly increases water demand and can set back establishment.

How to Plant Ground Morning Glory

1. Dig wide, not deep — excavate a hole 2–3x the root ball width at the same depth as the container.
2. Check for caliche — break through any hardpan layer to ensure proper drainage below the root zone.
3. Backfill with native soil — a light 20% organic amendment is fine; avoid heavy compost that retains excess moisture.
4. Spacing — 12–18 inches apart for pathway edging; 18–24 inches for rock gardens and slopes.
5. Water basin — build a 3–4 inch soil ring around each plant to direct water to the roots during the establishment period.
6. Mulch — apply 2–3 inches of bark or gravel mulch to conserve moisture and regulate soil temperature.

Watering Ground Morning Glory in Phoenix

First Year Watering Schedule

• Weeks 1–2: Every 1–2 days, deep and slow (20–30 minutes per session)
• Months 1–2: Every 3–4 days
• Months 3–6: Every 7–10 days (every 5–7 days during peak summer)
• After Year 1: Every 10–14 days in summer; every 3–4 weeks in winter

Drip Irrigation

Place 1 GPH drip emitters 12–18 inches from the plant center. Water deeply and infrequently to encourage deep root development. Once established, Ground Morning Glory is quite drought-tolerant and will thrive on minimal supplemental irrigation in Phoenix — reduce to once every 2 weeks in summer once the plant is fully rooted.

How fast does Ground Morning Glory grow in Phoenix?
Expect 6–12 inches of spread per year in Phoenix. Growth is most vigorous in spring and fall; it slows during peak summer heat but resumes in September and October as temperatures drop.

Is it drought-tolerant once established?
Yes. After its first growing season, Ground Morning Glory is a reliable low-water plant that requires only occasional deep watering to stay healthy and continue blooming. It's one of the best Mediterranean groundcovers for Phoenix xeriscapes.

Does it bloom all season?
In Phoenix's warm climate, Ground Morning Glory blooms from spring through fall and often continues sporadically through mild winters. The bloom period is exceptionally long compared to many other groundcovers, making it excellent for continuous color in the Phoenix Valley landscape.

Can it handle Phoenix summer heat?
Yes — once established, Ground Morning Glory handles full Phoenix sun and heat well. It may slow during the very hottest days of July and August but will continue blooming and resume vigorous growth when temperatures moderate in September.

Does it work in containers?
Ground Morning Glory is excellent in containers and hanging baskets on sunny Phoenix patios. Use a well-draining potting mix and a pot with drainage holes. Container plants may need watering every 2–3 days in summer; established in-ground plants need much less.

You May Also Like

Bush Morning Glory — a mounding, shrubby relative with similarly vivid blue flowers on a larger 2–4 foot form, ideal for borders and hedges in Phoenix landscapes.

Purple Trailing Lantana — a fast-spreading purple-blooming groundcover with exceptional drought tolerance, a great companion planting alongside Ground Morning Glory.

Mediterranean Carpet — a fragrant, low-growing herbal groundcover with lavender-purple blooms that pairs well with Ground Morning Glory's blue flower tones.

Gooding's Verbena — a low-growing Arizona native with vivid purple blooms that complements Ground Morning Glory in xeriscape and pollinator garden designs.