Caring for Mountain Fleece

Mountain fleece is undemanding once established, but a little seasonal attention keeps it looking its best. Watering is most important during prolonged dry spells in spring and summer, particularly if your plant is in full sun. The moderate water requirement means you should aim to keep the soil evenly moist but not waterlogged; clay and loam soils usually hold enough moisture, but check weekly in hot weather and water deeply if the top few centimetres feel dry. In autumn and winter, rainfall is generally sufficient and additional watering is rarely needed. Feed in March or April as new growth appears. Scatter a general-purpose granular fertiliser such as blood, fish and bone or Growmore around the base at the rate recommended on the packet, then lightly fork it into the soil surface. A second, lighter feed in late April can boost flowering, but it's not essential—mountain fleece is not a heavy feeder. Refresh the mulch layer each spring to conserve moisture and suppress weeds. Persicaria amplexicaulis is fully hardy in zones 5a–9a and requires no winter protection in temperate Europe. The top growth dies back naturally after the first frosts, and the crown will survive temperatures well below freezing. Simply leave the dead stems in place until your March tidy-up. Pests and diseases are rare. Slugs and snails may nibble young shoots in spring, so scatter slug pellets or use barriers if you notice damage. Occasionally, powdery mildew can appear on foliage in very dry conditions, but it's largely cosmetic and doesn't weaken the plant. Good soil moisture and adequate spacing to allow air circulation are the best preventatives. Overall, mountain fleece is a robust, trouble-free perennial that rewards minimal effort with months of colourful flower spikes.