Brunnera Sea Heart

Brunnera ‘Sea Heart’ is a standout shade-loving perennial, grown for its large, heart-shaped leaves in shimmering silvery-green with bold green veining—beautiful from spring right through to autumn. In spring it also produces dainty sprays of tiny forget-me-not blue flowers, which float above the foliage and add a lovely extra layer of interest.

It’s perfect for brightening shady borders, underplanting shrubs and trees, or bringing a cool, calming feel to woodland-style planting. Brunnera is also brilliant for creating contrast—those reflective leaves make darker corners feel lighter, and it pairs beautifully with Hostas, Ferns, Heucheras and spring bulbs.

Planting Instructions

When to Plant:

Plant in spring or autumn, while the soil is moist and workable. Container-grown plants can be planted at most times of year, avoiding frozen or waterlogged conditions.

Where to Plant:
Choose a spot in partial shade or full shade with moist, well-drained soil. Brunnera is ideal for shady borders, woodland gardens, under trees and shrubs and north-facing areas. It prefers soil that stays evenly moist, especially in summer.

How to Plant:

• Depth: Plant at the same depth as in the pot, with the crown level with the soil surface.
• Spacing: Space 40–50 cm (16–20 inches) apart to allow room for the foliage clumps to develop.
• Soil Prep: Improve soil with well-rotted compost or leaf mould to help retain moisture and support healthy growth.

Watering:
Water well after planting and keep the soil evenly moist during the first growing season. Water during dry spells—Brunnera dislikes drying out.

Aftercare Tips:

• Mulch in spring with compost or leaf mould to conserve moisture.
• Remove any tired or damaged leaves as the season goes on to keep plants looking fresh.
• After flowering, simply enjoy the foliage—it provides colour and structure for months.
• Divide clumps every 3–5 years in spring to maintain vigour if needed.

Top Tip:
Brunnera ‘Sea Heart’ is all about foliage impact. Plant it where light catches the leaves—near paths or the front of a shady border—and it will make darker areas feel brighter and more inviting.

Plant Details

Flowering Period:

April - May

Height:
12–18" (30–45cm)

Position:
Partial shade / full shade

Hardy Perennial