Caring for Mexican Feather Grass

Once established, Mexican feather grass is exceptionally low-maintenance and drought-tolerant. Water newly planted specimens occasionally during their first summer if rainfall is scarce, but after that, watering is rarely necessary. Established plants cope well with dry spells and actually perform better in lean, dry conditions than in rich, moist soil. Overwatering or waterlogged soil in winter is the most common cause of failure, leading to root rot. Feeding is not required and is best avoided. This grass evolved in poor, rocky soils and too much fertility encourages soft, floppy growth that lacks the plant's characteristic fine texture and may flop open in the centre. No feeding months are recommended—simply let it grow in the existing soil. Mexican feather grass is hardy to zone 6a, so it survives most winters in temperate Europe without protection. In colder or wetter areas, good drainage becomes even more critical in winter. If your garden is prone to winter wet, consider planting in a raised bed or adding extra grit at planting time. The evergreen foliage may look scorched after hard frosts, but the plant usually recovers in spring. Pests and diseases are rare. Occasionally, aphids may appear on new growth in spring, but they seldom cause lasting damage. Rust can occur in humid conditions, though it's uncommon; improve air circulation if you notice orange spots on foliage. Self-seeding can be prolific in mild, well-drained gardens. If you want to prevent spread, deadhead the feathery plumes in late summer before seed ripens, or simply pull up unwanted seedlings in spring. A gravel mulch around the base helps suppress weeds and maintains the dry conditions this grass prefers.