When to plant Siberian bugloss 'Jack Frost'?

Brunnera macrophylla 'Jack Frost' thrives in partial to full shade, making it ideal for woodland gardens, shady borders, or beneath deciduous trees. It tolerates a range of soil types but performs best in loam or clay soil that retains moisture without becoming waterlogged. Avoid planting in full sun, especially in drier soils, as the foliage can scorch and the plant will struggle. 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 the plant a full growing season ahead. Prepare the soil by digging in plenty of organic matter—well-rotted compost or leaf mould—to improve moisture retention and soil structure, particularly if your soil is on the lighter side. Dig a hole slightly larger than the root ball and set the plant at the same depth it was growing in its pot. Space plants 45 cm apart to allow for their eventual spread of 40–60 cm. Firm the soil gently around the roots to eliminate air pockets, then water thoroughly to settle the plant in. After planting, apply a 5 cm layer of organic mulch such as composted bark or leaf mould around the base, keeping it clear of the crown to prevent rot. This helps retain moisture and suppresses weeds, both important for establishing young brunnera. Water regularly during the first growing season, especially in dry spells, until the roots are well established. Once settled, brunnera is relatively low-maintenance and tolerates typical moisture levels in shaded spots.