When to plant Siberian bugloss 'Looking Glass'?

Brunnera macrophylla 'Looking Glass' thrives in partial or full shade, making it ideal for woodland-style borders, north-facing beds, or beneath deciduous trees. It tolerates a range of soils but performs best in moisture-retentive loam or clay. Avoid hot, dry spots; the large, silvery leaves scorch easily in full sun and dry conditions. Plant in March, April, September, or October when the soil is workable and temperatures are mild. Autumn planting allows roots to establish before winter, while spring planting gives a full growing season ahead. Prepare the soil by digging in plenty of organic matter—garden compost or well-rotted manure—to improve moisture retention and structure, especially if your soil is on the lighter side. Dig a planting hole slightly larger than the root ball and set the crown at the same level it was growing in the pot; planting too deep can lead to rot. Space plants 45 cm apart to allow for their mature spread of 40–60 cm. Brunnera spreads slowly by rhizomes, forming attractive clumps over time. Water thoroughly after planting to settle the soil around the roots and eliminate air pockets. Apply a 5 cm layer of mulch—leaf mould, composted bark, or garden compost—around the base, keeping it clear of the crown itself. This conserves moisture, suppresses weeds, and mimics the plant's natural woodland habitat. Keep the soil consistently moist for the first growing season while the root system establishes. Brunnera dislikes being moved once settled, so choose your planting spot carefully.