Perennial Ryegrass requires consistent moisture, especially during dry spells and establishment. Water deeply but infrequently to encourage deep root growth, typically 2.5-4 cm per week, either from rainfall or irrigation. Avoid shallow, frequent watering which promotes weak roots and can lead to disease. Reduce watering in cooler, dormant periods.

Regular mowing is the primary form of 'pruning' for Perennial Ryegrass. Maintain a mowing height of 5-7.5 cm for lawns to promote healthy growth and discourage weeds. Never remove more than one-third of the blade height at once. Keep mower blades sharp to ensure clean cuts, which prevents tearing and reduces stress on the grass.

Perennial Ryegrass is primarily propagated by seed. Sow seeds in late summer or early autumn for best establishment, or in early spring. Ensure good seed-to-soil contact by lightly raking the area after broadcasting seeds. Keep the soil consistently moist until germination occurs, usually within 7-14 days. It can also spread slowly by tillering.

Repotting is not applicable for Perennial Ryegrass as it is typically grown as a turfgrass or in pastures, not in pots. If grown in a container for specific purposes, ensure the container has adequate drainage and refresh the soil annually. However, this is an uncommon practice for this species.