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Lobelia speciosa Starship Scarlet

Lobelia x speciosa Starship Scarlet
Garden Lobelia, Cardinal Flower

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A variety that blooms from the first year. Forming a narrow and upright clump, well-branched, this lobelia flowers abundantly in summer. Its dark flower stems bear beautiful scarlet red flowers. Generous, but not very hardy, this short-lived perennial requires a fertile, moist to wet soil, as well as a sunny exposure.
Flower size
5 cm
Height at maturity
60 cm
Spread at maturity
40 cm
Exposure
Sun
Hardiness
Hardy down to -15°C
Soil moisture
Moist soil, Damp soil
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Best planting time March to April
Recommended planting time March to June
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Flowering time July to September
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Description

The Lobelia x speciosa Starship Scarlet is part of a new generation of earlier hybrids, with an upright, narrow habit and well-branched growth, boasting abundant flowering.  This colourful plant forms a cluster of purple-chocolate leafy stems that culminate in spikes of very bright red flowers from the first summer onwards. Generous and short-lived, this perennial is ideal for flowering in wet areas or near water points. It can also be grown in a pot, ensuring frequent watering. 

The Lobelia x speciosa Starship Scarlet is a plant from the campanula family, originating from horticultural species. Derived from American species Lobelia cardinalis, L. splendens and L. siphilitica, this herbaceous perennial with a short lifespan (around 3 years) easily perpetuates by dividing the stumps every two years. The 'Starship Scarlet' variety forms a bushy and upright clump, 60 cm (24in) tall and 40 cm (16in) wide. Unlike most hybrid lobelias, this plant stands very upright and its stems are quite sturdy. It also stands out for its quick flowering and blossoms appearing as early as July. Its beautiful oblong foliage, with dentate margins, is glossy and sometimes slightly tinged with purple depending on the season. It is carried by dark-coloured stems that enhance the flower's colour. Each stem branches out and bears long, erect spikes adorned with very unique tubular corolla flowers, somewhat resembling soft-winged butterflies; each, 5 cm (2in) long, consists of 2 lips, the upper lip being bilabiate and the lower lip trilobed. 

The Lobelia speciosa Starship Scarlet is a plant that thrives in damp to moist soil, ideal for embellishing the banks of water points, but also very beautiful in a bed where the soil remains cool in summer. In this usage, it can be paired with vernonias, the African Corn Lilies, white or pink hastate vervains, or Virginia mountain mints. This variety will also look stunning accompanied by grey or purple foliage in a tall bed. Plants such as Artemisia lactiflora, Carex granularis, or Hosta 'Lacy Belle' will provide the silver or bluish touch that forms a magnificent setting for its vibrant colours.



 

Lobelia speciosa Starship Scarlet in pictures

Lobelia speciosa Starship Scarlet (Flowering) Flowering
Lobelia speciosa Starship Scarlet (Foliage) Foliage

Flowering

Flower colour red
Flowering time July to September
Inflorescence Cluster
Flower size 5 cm
Good for cut flowers Cut flower blooms

Foliage

Foliage persistence Deciduous
Foliage colour green

Plant habit

Height at maturity 60 cm
Spread at maturity 40 cm
Growth rate fast

Botanical data

Genus

Lobelia

Species

x speciosa

Cultivar

Starship Scarlet

Family

Campanulaceae

Other common names

Garden Lobelia, Cardinal Flower

Origin

Cultivar or hybrid

Product reference175591

Planting and care

Plant the Lobelia x speciosa in a rather sunny exposure, in moist to wet soil and not too chalky. It actually fears winter humidity more than the cold. But since it requires moist soil in summer, it is preferable to overwinter it in regions with heavy frost. Some varieties see their stumps hollow out and rot in winter. To preserve and perpetuate them for many years, it is necessary to divide the stumps every 2 to 3 years, preferably in spring. Thus rejuvenated, they will be your companions for life. All hybrid lobelias are deciduous and their foliage completely disappears in winter.

17
14,50 € Each
6
19,50 €

Planting period

Best planting time March to April
Recommended planting time March to June

Intended location

Suitable for Meadow, Pond edge
Type of use Border, Container
Hardiness Hardy down to -15°C (USDA zone 7b) Show map
Ease of cultivation Amateur
Planting density 5 per m2
Exposure Sun
Soil pH Neutral
Soil type Silty-loamy (rich and light)
Soil moisture Moist soil, Damp soil, Fertile and well-drained

Care

Pruning instructions Prune the faded flowers as they appear in order to renew the new inflorescences.
Pruning Pruning recommended once a year
Pruning time July to September
Disease resistance Good
Overwinter Needs protection

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