How to Grow Perennial Groundcovers
Wikimedia Commons
Perennial Groundcovers
Various species (e.g., Ajuga reptans, Sedum spp., Thymus spp.)
groundcoverPerennial groundcovers are low-growing, spreading plants that form dense mats or carpets across the soil surface, typically reaching 6-12 inches in height. They are valued for erosion control, weed suppression, aesthetic appeal, and reducing maintenance needs in landscaping. These versatile plants thrive in various conditions and can tolerate foot traffic, shade, or challenging terrain.
Looking for a specific variety?
When should you plant Perennial Groundcovers in your zone?
Get a personalized planting timeline — when to start seeds, transplant, and harvest — based on your USDA zone and local frost dates. Free to start.
Example Perennial Groundcovers timeline · Pittsburgh, PA (Zone 6b)
-
Plant Perennial Groundcovers
Around Apr 17Near Pittsburgh's average last spring frost.
-
Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
-
Harvest Perennial Groundcovers
Late summer into fallBefore the first fall frost (≈ Nov 8)
Sample dates for Pittsburgh, PA. Sign up to get exact Perennial Groundcovers dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Zone adaptation varies by species; most hardy groundcovers thrive in zones 3-9, while some tender varieties suit zones 9-11
Sign up free to see if Perennial Groundcovers grows in your zone — and get a personalized planting timeline.
Get my Perennial Groundcovers timeline →Growth Stages
Establishment
4-8 weeksYoung plants are small and sparse, with limited spreading. Soil around plants is mostly visible.
Water consistently to keep soil moist but not waterlogged. Apply 2-3 inches of mulch around plants (keeping away from stems). Remove competing weeds manually.
Vegetative Growth
2-4 monthsPlants begin spreading and filling in, with stems rooting at nodes. Foliage becomes denser and coverage increases noticeably.
Continue regular watering during dry spells. Reduce mulch as plants spread. Prune lightly to encourage bushier growth if needed. Begin fertilizing lightly with balanced fertilizer.
Maturation
3-12 months depending on speciesPlants form continuous mats or carpets with full ground coverage. Foliage is dense and lush.
Water during extended dry periods only. Reduce fertilizer frequency. Remove dead or damaged stems. Edge beds if needed to contain spread.
Flowering (if applicable)
2-8 weeks depending on speciesMany groundcovers produce colorful flowers (small clusters, spikes, or solitary blooms) in spring or summer above the foliage.
Deadhead spent flowers to extend bloom and encourage neat appearance, or leave flowers for pollinators. Some groundcovers self-seed; manage seedlings to prevent overcrowding.
Maintenance & Rejuvenation
Ongoing, annually or as neededEstablished groundcovers require minimal care but may become thick or woody over time.
Cut back hard every 2-4 years to rejuvenate (early spring best). Remove weeds if they establish in the mat. Aerate compacted areas. Divide or replant sparse sections.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
-
and
Hand-pick in early morning/evening, use copper barriers, encourage ground beetles, apply diatomaceous earth
-
Increase humidity with regular misting, spray with water, use miticide if severe
-
Ensure good air circulation, reduce overhead watering, spray with sulfur or baking soda solution
-
Improve drainage, avoid overwatering, remove affected plants, apply fungicide if needed
-
Hand-pull when groundcover is young, mulch to suppress, use pre-emergent herbicides before establishment
Uses
Erosion Control & Slope Stabilization
HouseholdGroundcovers bind soil with their root systems and reduce water runoff on slopes and banks, preventing erosion and soil loss. They are especially valuable for steep terrain where mowing is difficult or dangerous. [source]
Weed Suppression & Reduced Maintenance
HouseholdDense groundcover mats outcompete weeds for light, water, and nutrients, reducing the need for weeding, mowing, and chemical herbicides. Once established, they significantly lower garden maintenance time. [source]
Culinary Herbs (Thyme, Oregano varieties)
CulinaryCreeping thyme, oregano, and other groundcover herbs provide fresh leaves for cooking, teas, and seasoning. They tolerate foot traffic and release aromatic oils when walked upon. [source]
Pollinator & Beneficial Insect Support
WildlifeFlowering groundcovers attract bees, butterflies, and other pollinators; their dense growth provides habitat for ground-dwelling beneficial insects and small animals. [source]
Medicinal Herb Production (Creeping Thyme, Gotu Kola)
MedicinalSome groundcover species like creeping thyme and gotu kola have traditional medicinal properties and can be harvested and dried for herbal teas or remedies. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Groundcovers are not typically harvested for food. For ornamental or medicinal varieties (like creeping thyme or oregano), pinch or cut stems as needed for use. Prune in early spring or after flowering to maintain shape and vigor. Avoid heavy harvesting during the first year of establishment.
Fun Facts
- 🌱 Creeping thyme (Thymus serpyllum) releases an intensely aromatic fragrance when stepped on, making it perfect for garden paths; ancient Greeks and Romans used it as a symbol of courage and virtue.
- 🌱 Ajuga reptans (bugleweed) can spread up to 24 inches in a single season and forms such dense mats that it can suppress lawn weeds without chemicals, earning it the nickname 'carpet bugle.'
- 🌱 Many groundcovers like sedums are succulents that propagate from a single fallen leaf—even a tiny fragment can root and form a new plant, making them incredibly resilient and easy to propagate.
Join 30,000 gardeners planning their gardens with LizPlants.
Get your personalized Perennial Groundcovers planting timeline
Tell us your zip code and we'll calculate exactly when to start Perennial Groundcovers seeds, transplant seedlings, and harvest — based on your USDA zone and local frost dates. Includes calendar reminders and printable task lists. Free to start.
Get my Perennial Groundcovers timeline →