Growing Hakone grass in a pot

Hakonechloa macra is a low-maintenance grass once established, but it does appreciate consistent moisture, especially in its shadier habitats where competition from tree roots can be fierce. Water regularly during dry spells in spring and summer, aiming to keep the soil evenly moist but not waterlogged. In autumn and winter, rainfall is usually sufficient, but check plants growing under dense tree canopies or against house walls, as these spots can stay surprisingly dry. Feed in April or May as new growth begins. Apply a balanced granular fertiliser (such as blood, fish and bone or a general-purpose feed like Growmore) around the base at the rate recommended on the packet, then water in well. A single spring feed is enough; Hakonechloa isn't a heavy feeder and too much nitrogen can lead to lush, floppy growth. Mulch annually in spring after feeding. A 3–5 cm layer of garden compost, leaf mould, or bark chips helps retain moisture, suppresses weeds, and gradually improves soil structure. Keep mulch clear of the crown itself to avoid rotting the base of the plant. Hakonechloa is fully hardy in zones 5–9 and needs no winter protection in temperate Europe. The clump may take a year or two to reach its full size, as it spreads slowly by short rhizomes, but patience is rewarded with a neat, weed-suppressing mound. Pests and diseases are rare. Slugs occasionally nibble young shoots in spring, so scatter slug pellets or use beer traps if damage is severe. Rust can appear as orange spots on the foliage in humid summers, but it's seldom serious; simply remove affected leaves and ensure good air circulation.