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Scutellaria scordiifolia

Scutellaria scordiifolia

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No regrowth. I did, however, plant them in several different locations.

Michèle, 16/06/2022

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This plant carries a 12 months recovery warranty

More information

This perennial, related to mints, forms low and spreading clumps, from which emerge spikes of tubular flowers in an intense gentian blue from June to August. This vigorous plant is very hardy and can withstand root competition. This undemanding plant works wonders in sunny borders and rockeries. Plant it in any well-drained, even poor, soil.
Flower size
3 cm
Height at maturity
20 cm
Spread at maturity
50 cm
Exposure
Sun, Partial shade
Hardiness
Hardy down to -29°C
Soil moisture
Moist soil
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Best planting time March, October
Recommended planting time February to April, October to December
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Flowering time June to August
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Description

Scutellaria scordiifolia, also known as helmet skullcap, is a perennial related to mints, better known for its use in herbal medicine than in ornamental gardens, despite its ease of cultivation in any well-drained, moist to dry soil. It forms a low, spreading clump, from which a good number of spikes of long flowers of an intense gentian blue emerge in late summer. Vigorous, hardy, and able to withstand root competition, it thrives in sunny borders and rockeries. It  also makes lovely potted displays.

 

Scutellaria scordiifolia is an herbaceous, rhizomatous perennial belonging to the Lamiaceae family, along with sage, mint, and thyme. It is native to the open, humid areas of China and Siberia. It is found in deciduous forests, pine forests, marshy meadows or grassy slopes, at an altitude of 2100m (6890ft). It is a perfectly cold-hardy plant, also able to withstand periods of relative drought.

 

The plant shows a moderately fast growth rate and will not exceed an average of 20cm (8in) in height (for foliage) with a 50 to 60cm (20 to 24in) spread. The stems are produced by a shallow stoloniferous underground stem with small tubers that act as a food reserve in case of difficult periods, such as drought. The stems are purple, slightly hairy, rough, and curved at the tip, with a square cross-section. They have opposite leaves towards their basal part, separated along the stem by long internodes. The light green linear to triangular leaves are 1.5 to 3.8cm (1 to 2in) long and 1 to 1.4cm (1in) wide. Their surface is hairy and their margin serrated. The stems, erect up to 50cm (20in) from the ground, produce numerous flowers in groups of 2 to 4 in the leaf axils from June to August. The small flowers, 1.5 to 2cm (1in) long, are generally tubular and bilabiate. They have a violet calyx enclosing two lips, the upper of which is helmet-shaped. Their colour is a bright gentian blue, slightly marked with white at the throat. The flowers are popular with pollinating insects. Its vegetation dies down in winter and returns at the end of March.

 

This skullcap is an adorable little plant. It is floriferous and easy to grow in well-drained soil. It is often used in rock gardens that are not too dry, or at the edge of paths or beds that it festoons with its very blue blooms for several weeks in summer. Withstanding the competition of shrub roots, it will also find its place at the foot of a hedge, as long as it receives sunlight there. It can be planted with, for example, helianthemums and sedums. It can also be placed near a pond, as long as the soil is not waterlogged. It can be easily grown in pots, to decorate a patio or balcony during summer.

Scutellaria scordiifolia in pictures

Scutellaria scordiifolia (Flowering) Flowering

Flowering

Flower colour blue
Flowering time June to August
Flower size 3 cm
Bee-friendly Attracts pollinators

Foliage

Foliage persistence Deciduous
Foliage colour green

Plant habit

Height at maturity 20 cm
Spread at maturity 50 cm
Growth rate normal

Botanical data

Genus

Scutellaria

Species

scordiifolia

Family

Lamiaceae

Origin

North America

Product reference853941

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Planting and care

Plant in autumn or spring, in full sun or partial shade, in ordinary but well-drained soil that is moist to occasionally dry. This pretty plant adapts to wetter soil in summer, but doesn't like heavy, waterlogged soil in winter. In heavy clay soil, plant it on a mound or raised bed, in a mixture of potting soil, garden soil, and gravel (or pebbles). Once well established, this plant will withstand periods of moderate drought, with a few waterings in the event of a particularly dry summer. It is also a good plant for alpine rock gardens and mid-mountain gardens.

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Planting period

Best planting time March, October
Recommended planting time February to April, October to December

Intended location

Suitable for Meadow, Rockery, Pond edge
Type of use Edge of border, Container, Slope
Hardiness Hardy down to -29°C (USDA zone 5) Show map
Ease of cultivation Amateur
Planting density 2 per m2
Exposure Sun, Partial shade
Soil pH Neutral
Soil type Chalky (poor, alkaline and well-drained), Silty-loamy (rich and light), Stony (poor and well-drained)
Soil moisture Moist soil, Well-drained soil.

Care

Pruning instructions Prune the dead and dry stems at the end of winter.
Pruning Pruning recommended once a year
Pruning time March
Disease resistance Very good
Overwinter Can be left in the ground
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