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1Scan for outdated or missing drivers - takes under a minute2Clear out junk files and repair common Windows errors3Fix the driver behind crashes, sound loss and screen glitchesFor most perennial ground covers in temperate U.S. gardens, plant in spring or fall. Fall is often the better choice when the soil is still warm, rain is available, and plants have time to establish before severe cold. Spring is a reliable alternative when mild weather and moisture support root growth. Summer planting is possible, but usually requires closer attention to watering.
Spring or fall: which is better?
Both seasons work for many ground covers; the better choice depends on local weather, the plant, and whether you can keep the soil moist while roots establish.
| Planting window | When it suits | What to watch |
|---|---|---|
| Fall | Soil remains warm, rainfall is available, and mild weather is likely to continue before severe cold. | In cold-winter areas, mulch may help prevent frost heaving. Allow enough time for establishment before winter. |
| Spring | Soil can be worked and mild temperatures and rainfall support new growth. | Plant early enough to establish before hot, dry weather, and monitor moisture as temperatures rise. |
| Summer | You can water reliably and check the root zone during hot or dry spells. | New plants are less forgiving if the soil dries out; frequent watering may be needed. |
Regional guidance reflects those differences. University of Delaware Cooperative Extension, in a fact sheet reviewed in March 2025, calls autumn the best time to plant and transplant ground covers, with spring second. University of New Hampshire Extension recommends spring or fall when temperatures are mild and precipitation is more frequent. University of Illinois Extension also recommends spring or fall for most ground covers. These are regional recommendations, not a universal calendar.
Why fall and spring are favorable
Fall planting
Fall can combine warm soil with cooler air and natural rainfall. Delaware Extension notes that cooler air slows top growth while warm soil and rain can favor rooting. Choose fall only when your local conditions leave a reasonable establishment period before severe cold; in areas prone to frost heaving, Illinois Extension advises considering mulch.
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- COVERAGE: 20,000 seeds of creeping thyme (Thymus Serpyllum) provide extensive ground coverage for gardens, pathways, and landscaping areas
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- VERSATILE PLANTING: Ideal for rock gardens, between stepping stones, lawn alternative, or as an attractive border plant that helps suppress weeds
- GROWING SPECIFICATIONS: Thrives in full sun to partial shade, reaches 2-4 inches in height, and spreads up to 18 inches per plant
Spring planting
Spring offers mild conditions and often more frequent precipitation, giving plants a chance to root before summer heat. It is a good option if fall is too short or too dry in your area, or if the selected ground cover’s guidance favors spring planting.
Summer planting
Summer is not automatically off-limits. Missouri Extension says most ground covers suited to Missouri can be planted during the growing season, while still preferring spring or fall. That guidance is specific to Missouri; elsewhere, treat summer as a workable but higher-maintenance option, especially during hot, dry weather.
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- 🌱 High Germination Ground Cover Seeds – Create a lush green carpet for paths, patios, and empty garden spaces.
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- 🐝 Fragrant & Pollinator Friendly – Releases a pleasant scent when stepped on and attracts bees and butterflies.
- 🌿 Fast Spreading Coverage – Quickly forms a dense mat that helps suppress weeds.
- ❄️ Hardy Perennial Plants – Cold-hardy in zones 4–9 and returns year after year with minimal care.
Choose a planting window for your site
- Check the plant’s local fit. Match its hardiness and growing needs to your region, including sun or shade, soil type, and wet or dry conditions. Also consider mature height, evergreen or deciduous habit, growth rate, foot traffic, and cost. Check current local extension or state guidance for species that may be invasive or restricted.
- Assess the weather and soil. For fall, look for warm soil, available rainfall, and enough mild weather before winter. For spring, wait until the soil can be worked and aim for mild conditions. Avoid choosing a date by month alone.
- Be realistic about water. If rain is unreliable, plant when you can irrigate and monitor soil moisture. Summer planting demands the closest attention, but new plants need adequate moisture in any season as roots establish.
- Prepare the bed first. Remove perennial weeds before planting; they are difficult to control once spreading ground covers fill in. Water the bed after installation and use mulch where appropriate to retain moisture, suppress weeds, or reduce frost-heaving risk.
Plan for establishment, not instant coverage
Planting starts the process; it does not guarantee a carpet by the end of the season. Illinois Extension says full establishment may take one to two growing seasons. Keep checking moisture while plants root in. Delaware Extension describes irrigation until establishment as about three months, while New Hampshire Extension recommends checking moisture at least weekly during the first growing season. These are source-specific care guidelines, not fixed schedules for every species, soil, or climate.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Why there is no universal planting month
The extension recommendations come from different regions: Delaware favors autumn, New Hampshire and Illinois recommend spring or fall, and Missouri allows planting through the growing season while preferring spring or fall. Local winter severity, rainfall, irrigation, soil conditions, and the chosen plant all affect the practical window. For a site-specific decision, follow your local extension service and the planting guidance for the species you select.
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- COLORFUL LONG-BLOOMING GROUND COVER: Elevate your garden aesthetics with this exquisite floral mix. These beautifully branched, compact plants feature tiny complex flowers grouped into large, rounded umbel-shaped clusters, creating a living bouquet effect.
- VALUABLE COLOR ASSET: More than just a flower, this variety is a master of color and impact. It boasts an impressive range of expressive shades—white, cream, pink, red, lavender, lilac, and purple—set against delicate, fern-like foliage for a picturesque tapestry.
- CONTINUOUS FLORAL DISPLAY: Ultra-decorative, lacy, and airy green foliage with a fine feathery texture forms a soft cushion for clusters of star-shaped, saturated flowers. This contrasting palette transforms ordinary gardens into extraordinary landscapes with long-lasting blooms.
Sources: University of Delaware Cooperative Extension, “Groundcover Alternatives to Turf Grass” (reviewed March 2025); University of New Hampshire Extension, “Groundcovers for New Hampshire”; University of Illinois Extension, “Ground Covers”; University of Missouri Extension, “Selected Ground Covers for Missouri” (reviewed July 2019).
Quick Recap
Rank #4
- DENSE, MAT-FORMING GROUND COVER: Outsidepride Irish Moss seeds provide a lush, mat-forming ground cover ideal for pathways, rock gardens, shaded areas, patio borders, and lawn alternative projects. Ideal for homeowners, gardeners, landscapers, and property owners, this perennial adds soft, moss-like greenery to outdoor spaces and border accents.
- LOW-GROWING LAWN ALTERNATIVE: Growing only 1-2 inches tall, Irish Moss seeds offer a compact, low-maintenance ground cover that is perfect for lawn replacement, pathway edging, patio makeovers, rock garden design, and filling gaps between stepping stones or pavers for a seamless finish.
- ADAPTABLE TO SHADE & SUN: Irish Moss can thrive in both partial shade and full sun, making it versatile for shaded pathways, bright patios, rock gardens, and border plantings. This perennial favorite is a dependable choice for customers interested in shade-tolerant ground cover, lawn alternatives, and low-maintenance outdoor design.
- MOISTURE-RETAINING & SOFT TEXTURE: Irish Moss ground cover grows well in moist, well-drained soils and forms a soft, carpet-like surface. It pairs well with stepping stones, pavers, patio borders, rock gardens, and other low-growing ground cover plants while helping retain soil moisture in shaded areas and cooler gardens.
- COLD-HARDY PERENNIAL FOR ALL SEASONS: With cold tolerance and perennial growth, Irish Moss returns each year to add low-growing greenery to your landscape. Perfect for shaded gardens, rockery, patio ground cover, and low-traffic areas, this deer-resistant ground cover adds delicate white spring-to-summer blooms and enhances outdoor spaces year-round.
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