Japanese Millet
https://blogs.cornell.edu/worldcrops/crops/crops-alphabetical/japanese-millet/
Scientific Name: Echinochloa spp.
Life Cycle: Summer Annual
Growth Habit: Upright
Preferred Soil pH: 5.5-7.5 Min.
Germination Temp.: 65F
Upright summer annual that grows 2-4 feet tall. Has thick stems and a more course appearance than other millets.
For more region specific information, each cover crop species can be found in the cover crop decision tool by name.
Pearl Millet
https://advancecovercrops.com/cover-crops-advance-cover-crops/grass-and-cereals-cover-crops-advance-cover-crops/pearl-millet-advanced-cover-crops/
Scientific Name: Pennisetum glaucum
Life Cycle: Summer Annual
Growth Habit: Upright
Preferred Soil pH: 5.5-7.5 Min.
Germination Temp.: 65F
Upright summer annual bunchgrass that grows 2-4 feet tall. Has broad, flat pointed leaves with serrated edges and cattail-like inflorescences.
For more region specific information, each cover crop species can be found in the cover crop decision tool by name.