It often grows in infertile soils where other cereal grains fail. Cereal rye tolerates drought better than do the other cereal grains, in part because of its extensive root system. It grows best with ample moisture, but excessive moisture during the fall and winter suppresses vegetative growth. Cereal rye does not tolerate flooding. Snow is readily trapped by the cereal rye plant, providing insulation from cold weather and increasing water availability in dry climates.
Cereal rye is an excellent choice as a late-sown cover crop.
In western Oregon it may be planted any time of the year. Because it establishes rapidly in cool weather and grows throughout the winter, cereal rye is excellent for protecting the soil from wind and water erosion, scavenging soil-N before it is leached below the root zone, and suppressing weeds. Cereal rye's extensive root system makes it among the best cover crops for improving soil structure. Incorporating mature residues can improve water infiltration and aeration and add substantial quantities of organic matter to the soil. Use to protect soil, smother weeds, scavenge N, and improve tilth.