Start with one primary job
A cover can build biomass, fix nitrogen, provide forage, protect the surface or create a rotation break. Many do several things, but one priority should lead the decision.
Match the growing window
Warm-season annuals, cool-season legumes and perennial groundcovers occupy very different windows.
- Count usable growing days.
- Know the temperature and moisture limits.
- Protect enough time for termination and the next planting.
Design the exit before the entry
Termination method, maturity, residue and plant-back interval should be decided before seed is ordered.