Perfect Perennial Pairings for Living Mulch in the Sun
Posted by Annie Algren on May 15th 2025
Perfect Perennial Pairings for Living Mulch in the Sun
The practice of adding wood mulch to our garden beds is deeply integrated into the culture of gardening and landscaping, but what if there was an easier, more ecologically beneficial way to keep weeds out and moisture in? We encourage you to give living mulch a try! By adding low growing ground covers to your garden beds as a wood mulch replacement, you will reap numerous benefits such as weed suppression, soil enrichment, moisture retention, and the expansion of wildlife habitat. Save your back and your wallet too by making the swap! Here are three prefect perennial pairings that you can incorporate into your sunny garden beds or under trees as a wood mulch replacement.
Creeping Thyme (Thymus serpyllum)
Attributes
An herbaceous perennial groundcover with small, aromatic green leaves adorned with abundant bright summer flowers and bronze fall color.
Growth Habit
Low, spreading
Soil Type
Loam, Sand
Bloom Color
Pink/Purple
Size
2-6” H x 6-18” W
Bloom Time
Early summer to mid-summer
Use
Forms a low, dense mat tolerant of light foot traffic. Use between pavers, in rock gardens, above retaining walls, along walkways, or mass together in sunny borders
Maintenance
Cut or shear back by half in early spring to make way for new growth and control woody stems
Benefits
Deer and rabbit resistant, salt and drought tolerant, attracts pollinators, fragrant, repels mosquitos
Creeping Phlox (Phlox subulata)
Attributes
A low-growing MN native herbaceous perennial with creeping evergreen, needle-like foliage that forms a dense mat of abundant five-petaled spring flowers
Growth Habit
Low, spreading
Soil Type
Loam, will tolerate sand, clay
Bloom Color
Pink/Purple/Blue/White/Red
Size
6-8” H x 12-24” W
Bloom Time
Late spring to early summer
Use
Wonderful as a sunny groundcover in rock gardens, along pathways, or spilling over retaining walls
Maintenance
Prune after blooming if desired to maintain shape and spread
Benefits
Deer resistant, drought and salt tolerant, attracts pollinators, native
Bugleweed (Ajuga)
Attributes
A durable, low-growing herbaceous perennial groundcover that forms a dense mat of attractive foliage with violet flower spikes
Growth Habit
Low, spreading
Soil Type
Loam, clay, sand
Bloom Color
Blue/Purple
Size
3-6” H x 6-12” W
Bloom Time
Late Spring to Early Summer
Use
Perfect for planting along pathways, in low borders, on hillsides, or other spaces in sun
Maintenance
Prune after flowering, if desired, to maintain shape and vigor
Benefits
Deer and rabbit resistant, black walnut tolerant, drought tolerant once established, prevents erosion
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