Switchgrass thrives in consistently moist soil during its establishment phase. Once mature, it becomes highly drought-tolerant and prefers to dry out between waterings.

Overwatering can lead to root rot, so ensure good drainage. Water deeply when the top few centimeters of soil feel dry, especially during prolonged dry spells.

Pruning is primarily done in late winter or early spring before new growth emerges. Cut back the old, dried foliage to about 5-10 cm above the ground.

This removes dead material, encourages vigorous new growth, and maintains the plant's tidy appearance. Remove any dead or damaged stems throughout the growing season as needed.

Switchgrass is most commonly propagated by division of established clumps in early spring. Carefully dig up the plant and separate it into sections, ensuring each section has roots and shoots.

Alternatively, it can be propagated by seed, sown outdoors in autumn or early spring. Scarification or a period of cold stratification can improve germination rates.

Repotting is typically not necessary for established outdoor plantings of Panicum virgatum, as it is a perennial grass that forms large clumps.

If grown in containers, repotting may be required every 2-3 years in early spring as the plant outgrows its container. Choose a pot only slightly larger than the current one with fresh, well-draining potting mix.