How big does Siberian bugloss grow?

About 45 cm × 60 cm after ten years (height × width). Its ultimate size is 30–45 cm × 45–75 cm.

What soil does Siberian bugloss grow in?

It tolerates these soils: average garden soil, clay.

Is Siberian bugloss hardy?

Hardy down to -40 °C (USDA zone 3, RHS H7). It gets through winter in every part of the country.

How much water does Siberian bugloss need?

Water need: medium. Drought tolerance: low.

How much does Siberian bugloss cost?

It sells for roughly €6 to €14 in local shops, depending on size.

Siberian bugloss

Brunnera macrophylla

Siberian bugloss (Brunnera macrophylla) is a perennial that reaches 45 cm × 60 cm after ten years. Light: part shade, shade. Hardy down to -40 °C. Drought tolerance: low. Sold in local shops from about €6.

Illustration of Siberian bugloss — An illustration of the typical shape of the mature plant, not a photo.

What it's good for, and what it isn't

A shade-loving perennial with large, rough, heart-shaped leaves that carries a haze of tiny sky-blue, forget-me-not-like flowers above the foliage in spring. Plant it under trees and shrubs or in a partly or fully shaded bed, in humus-rich soil that does not dry out in summer, where it slowly knits into a dense ground-covering patch. The silver and variegated forms light up shade especially well but need more care and steadier moisture.

Watch out for

The leaves scorch and turn brown in hot sun and dry soil; in the hot, dry summers of Central Europe it looks tired by midsummer without shade and watering. Slugs and snails may chew the young shoots. It self-seeds where it is happy, and seedlings of variegated and silver cultivars mostly revert to plain green.

Key facts

Light: Part shade, Shade
Water need: Medium
Care: Low
Size after 10 years: 45 cm × 60 cm
Hardiness: down to -40 °C
Foliage: Deciduous
Flowering: J F M A M J J A S O N D April–May, blue

Group	Perennial
Light	Part shade, Shade
Size after 10 years	45 cm × 60 cm
Ultimate size	30–45 cm × 45–75 cm
Hardiness	down to -40 °C (USDA 3, RHS H7)
Soil	Average garden soil, Clay
Foliage	Deciduous
Flowering	April–May, blue
Water need	Medium
Drought tolerance	Low
Maintenance	Low
Root aggressiveness	Low
Suckering	no data
Spreading	Medium
Distance from buildings	no data
Distance from paving	no data
Litter	not typical
Planting distance	40 cm
For dogs	Non-toxic (uncertain)
For cats	Non-toxic (uncertain)
For children	Non-toxic (uncertain)
Typical price	from about €6

Toxicity data is for information only. If your pet or child has eaten a plant, contact a vet or a doctor.

Sizes and prices available

The same plant is sold as a small pot and as a specimen several metres tall, and the price follows. Prices are rounded and for guidance only.

Size	Typical price
size not stated	approx. €6 – €14

Frequently asked questions

Data updated: October 8, 2026 · How our data is made

Appears in these lists

Ground cover plants for shade Ground cover plants Plants for shade Perennials for part shade Perennials for clay soil Perennials for pollinators Low-maintenance perennials

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