Science · Plants, Natives & Crops
Subterranean Clover
Subterranean clover is adapted to seasonal rainfall patterns with moist cool-season growth and dry summers. It buries seed-bearing structures near the soil surface, allowing annual regeneration when establishment conditions and grazing management are favorable.
Profile
- Growth habit
- Prostrate runners form a low-growing canopy.
- Seed placement
- Plants bury their seed pods before summer drought.
- Soil pH
- Oregon State lists a tolerated range of approximately 5.1–8.4.
- Cultivar adaptation
- Early-flowering cultivars fit shorter, drier growing seasons; later types require longer moisture availability.
- Nitrogen
- Fixes atmospheric nitrogen when effectively nodulated.
Water & soil context
- Moisture (VWC)
- The cited publications do not provide numeric volumetric water content sensor targets.
- Salinity tolerance
- No numeric salinity threshold is provided in the cited crop descriptions.
- Drought tolerance
- Primarily escapes summer drought through its annual life cycle and seed bank, rather than maintaining productive summer growth.
Illustrative monitoring-depth band
3–8 in
Editorial placement example, not a validated optimum or total rooting depth. Confirm the site's root distribution and soil horizons; multiple depths may be needed.
Best growth occurs where soil remains moist through the relevant spring growth period. Match cultivar maturity to seasonal moisture availability.
Problems to watch
- Weak establishment under shading or strong weed competition.
- Heavy grazing during first flowering can reduce seed production and regeneration.
- Select low-phytoestrogen cultivars where livestock breeding performance is important.
Stress signs
- The cited sources do not provide a reliable visual stress diagnosis list; normal seasonal senescence should not automatically be classified as irrigation failure.
Where you'll find it
- Reseeding cover crop
- Pasture forage
- Green manure
More plants, natives & crops
Published botanical and soil references are distinct from GroundWorx product guidance. Moisture thresholds and monitoring depths require site calibration; sources do not establish product performance or diagnose stress.