trefle.io · Taken May 21, 2022 by Cardanel (cc-by-sa)
Caryophyllaceae
Perennial knawel
Scleranthus perennis
Also known as Scleranthus perennis, German knotgrass, Knawel
Native Plants · Rock Garden · Mat-Forming · Sandy Soil · Drought Tolerant · European Native · Caryophyllaceae · Ground Cover · Low Maintenance · Perennial · Dry Conditions
Perennial knawel is a low-growing, mat-forming plant native to sandy and rocky soils across central and northern Europe, well suited to rock gardens and dry, nutrient-poor borders. It requires very little care once established — simply provide full sun to partial shade and well-drained, lean soil. Avoid rich or waterlogged soils, which can cause it to decline.
Growing conditions
The details behind the basics
- Daily light
- 6 hours
- Watering
- Water sparingly; allow soil to dry between waterings as this plant tolerates dry, sandy conditions · Every 10-14 days
- Maintenance
- Low
- Soil
- loam
- Soil pH
- 5.5–6.5
- Temperature
- -20°F to 85°F
- Cycle
- Perennial
- Propagation
- Seed, Cutting
Hardiness
USDA 5a-10b
Form & growth
Mature size and habit
- Mature height
- 12 in – 3 ft
- Spread
- 2 ft
- Spacing
- 6 in apart
- Growth rate
- Moderate
- Root depth
- Medium
- Flowers
- No
- Foliage
- Medium
Ecology & origin
Where it belongs and what it brings
- Native to
- Albania, Austria, Baltic States, Belarus, Belgium, Bulgaria, Central European Rus, Connecticut, Corse, Czechoslovakia, Denmark, Finland, France, Germany, Great Britain, Greece, Hungary, Italy, Krym, Madeira
- Attracts
- Bees
Sources: trefle, usda
More Scleranthus
Related plants from the same genus
Buy this plant
No nurseries currently list it
No nursery lists Perennial knawel right now.