Ribbon Grass requires consistently moist to wet soil conditions to thrive, especially in warmer climates or during dry spells. It is highly tolerant of waterlogged areas and can even grow in shallow standing water, making it ideal for bog gardens or pond margins. Avoid letting the soil dry out completely.

Pruning Ribbon Grass is essential for maintaining its appearance and controlling its spread. In late winter or early spring, before new growth begins, cut all old foliage back to ground level. This encourages fresh, vibrant shoots. Deadheading spent flower stalks is crucial to prevent self-seeding, which is a major contributor to its invasive nature. Regular pruning helps manage its vigorous habit and keeps it tidy.

Ribbon Grass is remarkably easy to propagate, primarily through division of its extensive rhizomatous root system. The most effective times for division are in spring or autumn when the plant is not actively flowering. Simply dig up a clump, carefully separate sections that have healthy roots and at least one shoot, and replant them immediately. While it can grow from seed, division is more reliable, especially for maintaining specific variegated cultivars.

Due to its aggressive, spreading nature, Ribbon Grass is not commonly grown in pots. However, if containerized to restrict its growth, it will quickly become root-bound. Repotting or dividing the plant every 1-2 years is necessary. Choose a larger, sturdy container or divide the existing plant, discarding older, less vigorous sections. This practice helps maintain plant vigor and prevents the roots from cracking the pot.