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Salvia Big Blue seeds - Hybrid sage

Salvia longispicata x farinacea 'PAS1246577' Big Blue
Sauge hybride Big Blue

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A tender perennial grown as an annual, the 'Big Blue' Sage produces long, dense violet-blue spikes from summer until the first frosts. It boasts elegant dark green foliage on a compact plant reaching 50 to 60 cm in height. It is heat-tolerant, thriving in full sun and well-drained soil. Ideal for borders, containers, or as cut flowers, it charms with its floribundus nature and neat appearance. Sow indoors from February to March at 21 °C.
Flower size
30 cm
Height at maturity
50 cm
Exposure
Sun
Germination time (days)
10 days
Sowing method
Sowing under cover, Sowing under cover with heat
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Sowing period February to March
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Flowering time July to November
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Description

The hybrid Salvia 'Big Blue' is a tender perennial grown as an annual for its decorative and prolonged flowering. This heat-resistant sage offers superb upright spikes of intense violet-blue, carried above a well-branched clump from summer until the first frosts. Elegant and generous, awarded multiple times, 'Big Blue' is ideal for summer beds, borders, flowering pots and for making bouquets.

Salvia 'Big Blue' (Salvia longispicata × farinacea 'Big Blue', 'PAS1246577') is a sterile horticultural hybrid introduced by PanAmerican Seed in 2017. The result of a cross-breeding between Salvia longispicata, a large shrubby perennial native to the mountainous regions of southwestern Mexico, and Salvia farinacea, a perennial species from Texas and Mexico, this sage belongs to the Lamiaceae family.
Salvia 'Big Blue' has been celebrated with several major horticultural awards that confirm its exceptional qualities in the garden. It notably received the Award of Garden Merit from the Royal Horticultural Society (RHS), a recognition that highlights its performance, reliability and ease of cultivation. It also distinguished itself in the European trials organised by Fleuroselect. Across the Atlantic, it was crowned Best of Show in 2019 at the famous annual flower trials of the Colorado State University Trial Garden, thanks to its exceptional flowering and remarkable visual impact.
Not very hardy (approximately -6°C), but fast-growing, 'Big Blue' is generally grown as an annual in temperate regions. It has an elegant habit, both upright and bushy, reaching 50 cm in height when in flower, with a 40 cm spread. Its sturdy stems are covered at their base with broad ovate, dark green leaves with toothed edges and prominent veins, quite different from that of mealy sages. The flowering begins tentatively in July, intensifies in August-September and reaches its peak in October-November. Above the well-furnished foliage appear upright, dense, 30 cm long spikes filled with small, deep violet-blue flowers. The plant is sterile and does not produce viable seeds, which allows it to devote all its energy to tirelessly flowering until the first frosts.

The hybrid sage 'Big Blue' integrates very easily into all gardens. It will naturally find a place in beds, for example with white cosmos 'Sonata White', pink zinnias 'Zinderella Lilac' or agastaches in pastel tones. In autumn, it will highlight the glowing foliage of the dwarf winged spindle. Its height also pairs very well with light grasses like Stipa tenuifolia, or airy perennials like Verbena bonariensis. For a softer effect, it can emerge from a cushion of silver helichrysum or settle near lavenders or santolinas. It also creates superb borders, especially alongside border bellflowers or Erigeron karvinskianus. In flowering pots, ‘Big Blue’ pairs beautifully with Diascia Breezee Plus Orange, mauve petunias or annual lobelias. Its lavender-like spikes also hold very well in a vase.

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Sages, salvia: planting, pruning and care
Family sheet
by Alexandra 19 min.
Sages, salvia: planting, pruning and care
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Salvia Big Blue seeds - Hybrid sage in pictures

Salvia Big Blue seeds - Hybrid sage (Plant habit) Plant habit

Flowering

Flower colour blue
Flowering time July to November
Inflorescence Spike
Flower size 30 cm
Bee-friendly Attracts pollinators
Good for cut flowers Cut flower blooms

Foliage

Foliage persistence Annual
Foliage colour dark green

Plant habit

Height at maturity 50 cm
Spread at maturity 40 cm
Growth rate fast

Botanical data

Genus

Salvia

Species

longispicata x farinacea

Cultivar

'PAS1246577' Big Blue

Family

Lamiaceae

Other common names

Sauge hybride Big Blue

Origin

Cultivar or hybrid

Product reference24578

Planting and care

To successfully sow Salvia 'Big Blue', start indoors approximately 6 weeks before the intended outdoor planting date, typically in February-March. Sow the seeds on the surface of a light, well-draining growing medium, pressing them lightly without covering, as they require light to germinate. Maintain a constant temperature of 21-24°C and adequate humidity, optionally covering the sowing tray with a transparent lid or plastic film. Germination occurs within 7-10 days.
Once the seedlings have developed a few leaves, transplant them individually into pots to encourage their development.

Plant in open ground after the last frosts, when night temperatures remain above 10°C. Choose a sunny location with rich, light, well-drained soil. If your soil is heavy or clay-based, incorporate mature compost and coarse sand to improve drainage. Space the young plants 40-50 cm apart to allow proper development. Water regularly after planting to facilitate rooting, then moderately, allowing the soil to dry slightly between waterings.

Container cultivation: choose a container at least 30 cm in diameter, with drainage holes. Use a quality growing medium, preferably universal potting compost enriched with compost. Add a layer of gravel or clay pebbles at the bottom of the pot to prevent waterlogging. Place the pot in a sunny spot and water regularly, ensuring not to saturate the growing medium. A monthly application of potassium rich liquid fertiliser, such as tomato fertiliser, will support abundant flowering throughout summer.

In regions with very mild winters, 'Big Blue' sages will overwinter in open ground. Elsewhere, they can be lifted in November, trimmed back, and stored over winter in a light, frost-free location. Growing in pots makes it easy to shelter them from severe winter frosts.

Sowing period

Sowing period February to March
Sowing method Sowing under cover, Sowing under cover with heat
Germination time (days) 10 days

Intended location

Suitable for Meadow, Rockery
Type of use Border, Edge of border, Cut flowers, Container
Hardiness Hardy down to -6.5°C (USDA zone 9a) Show map
Ease of cultivation Amateur
Exposure Sun
Soil pH Any
Soil moisture Moist soil well-drained, light, fertile

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