A perennial with dense clumps of shimmering silvery foliage, with distinct grey/green veining from late spring until autumn. Bears delicate sprays of pale blue and pink flowers in spring. A lovely low maintenance ground covering plant for sun or shade. Height 30cm. Spread 60cm. Hardy.
Brunnera macrophylla ‘Sea Heart’ is a hardy perennial admired for its shimmering silvery leaves with striking green veining and delicate sprays of pale blue and pink flowers in spring. Follow this comprehensive planting and care guide to make Brunnera macrophylla ‘Sea Heart’ a thriving addition to your garden.
PLANTING and AFTERCARE GUIDE
Best Planting Time
Spring: Plant Brunnera macrophylla ‘Sea Heart’ in early spring, giving it plenty of time to establish before the warmer months.
Autumn: Alternatively, early autumn planting allows the roots of your Brunnera to settle in before the winter, ensuring strong growth in spring.
Site Selection
Sunlight: Brunnera thrives in partial to full shade, making it ideal for shaded borders or woodland gardens. Avoid full sun, as it can scorch the foliage.
Soil: Choose moist, well-draining soil to prevent waterlogging. Brunnera performs best in nutrient-rich soil enhanced with organic matter, such as compost or well-rotted manure.
Planting Instructions
Prepare the Hole: Dig a hole twice as wide and the same depth as the plant’s root ball. This allows the roots of Brunnera macrophylla ‘Sea Heart’ to spread and establish.
Soil Preparation: Mix compost into the planting hole to boost soil fertility and improve moisture retention.
Planting: Position the plant so the top of the root ball is level with the surrounding soil. Gently backfill with soil, firming it lightly to remove air pockets.
Watering After Planting: Thoroughly water after planting to settle the soil and encourage healthy root growth.
Watering Requirements
Growing Season: Keep the soil consistently moist during the growing season. Water deeply when the topsoil begins to dry, but avoid waterlogged conditions, which can be harmful to your Brunnera.
Dormant Season: During the plant’s dormant period in late autumn and winter, reduce watering, only providing moisture if the soil becomes very dry.
Feeding
Spring: Apply a slow-release, balanced fertiliser in early spring to support new growth and enhance the vivid foliage of Brunnera macrophylla ‘Sea Heart’.
Mid-Summer: If necessary, a light feeding mid-summer can sustain the plant’s vigor and keep the foliage looking fresh.
Pruning
Deadheading: Remove spent flowers after blooming to encourage a tidy appearance and redirect energy back to the foliage.
Autumn Pruning: Cut back old and damaged leaves in autumn to prepare Brunnera macrophylla ‘Sea Heart’ for winter dormancy.
Mulching
Spring: Apply a layer of organic mulch, such as bark chips or compost, around the base of your Brunnera to retain soil moisture, suppress weeds, and regulate temperature.
Winter: Mulching in late autumn provides additional root protection from frost and helps the plant survive cold weather.
Supporting the Plant
Brunnera macrophylla ‘Sea Heart’ has a compact growth habit, eliminating the need for staking. However, in exposed areas with strong winds, consider light support to prevent damage.
Final Tips
Brunnera macrophylla ‘Sea Heart’ is an excellent choice for low-maintenance gardens, providing year-round interest with its silvery foliage and delicate spring blooms. Plant your Brunnera in shaded areas with well-draining, nutrient-rich soil for optimal growth. With regular watering, occasional feeding, and proper mulching, Brunnera macrophylla ‘Sea Heart’ will flourish as a stunning ground cover, adding elegance to your garden from spring to autumn.
Select options 
Anna Morrison (verified owner) –
Deirdre W. (verified owner) –
Lovely, health plant. Well packaged.
Sallie (verified owner) –
Quality plants at good prices, quick delivery and safely packed. Every time. Thank you.
Sarah Rawlings (verified owner) –
Mary Sinclair (verified owner) –
Lovely large robust looking plant, well packed.