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Salvia viridis Blue Monday - seeds

Salvia viridis Blue Monday
Painted Sage, Annual Clary

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This annual sage is very decorative and rewarding in the garden or in a pot, with flowers adorned with electric indigo bracts all summer long. Its upright flower stems dress up bouquets and flower beds, before joining dried flower arrangements. It is easy to grow, sown in place in spring, in the sun or partial shade.
Flower size
4 cm
Height at maturity
60 cm
Exposure
Sun
Annual / Perennial
Annual
Germination time (days)
14 days
Sowing method
Sowing under cover
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Sowing period March to April
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Flowering time June to September
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Description

The 'Blue Monday' Sage, in Latin Salvia viridis, is an annual plant native to the Mediterranean region. While its flowers are rather insignificant, its bracts are highly decorative and long-lasting. They are indigo blue with purple veins and present from June to September on hairy foliage. This easy-to-grow sage is rewarding, undemanding, and quite resistant to drought. Sow in place, in spring, in full sun or partial shade.

Salvia viridis is an annual sage, also known as green sage, belonging to the Lamiaceae family. It is naturally found growing in dry areas of the Mediterranean region. It has given rise to numerous cultivars. The 'Blue Monday' selection grows vigorously and quickly forms clumps 60 cm (24in) tall when in flower, sometimes branching at the base, with an upright and bushy habit. It has oval or oblong, 5 cm (2in) long, hairy, finely crenate, fairly dark green leaves. The flowering lasts about a month, between June and September, depending on the sowing date. The violet or mauve flowers are quite small, arranged in spike-like clusters and quickly fall off. They are surrounded by large sterile, vivid indigo-blue bracts marked with darker veins. These nectar-rich inflorescences do not fall off the plant and remain ornamental once dried. They are perfect flowers for fresh or dried bouquets.

The 'Blue Monday' Sage has sumptuous spikes of vibrant colour, stunning in beds or pots. It is perfect for quickly flowering the garden or terrace and easily self-seeds. It can be grown with other easy annuals like love-in-a-mist, cosmos, and Californian poppies. They quickly create a countryside composition. With perennials, it can be paired with common lady's mantle for an electric duo, or echinaceas and poppies. The floral spikes of this sage are highly appreciated in dried flower arrangements, with poppy seed heads and statice flowers.

Salvia viridis Blue Monday - seeds in pictures

Salvia viridis Blue Monday - seeds (Flowering) Flowering
Salvia viridis Blue Monday - seeds (Plant habit) Plant habit

Flowering

Flower colour blue
Flowering time June to September
Inflorescence Spike
Flower size 4 cm
Bee-friendly Attracts pollinators
Good for cut flowers Cut flower blooms

Foliage

Foliage persistence Annual
Foliage colour dark green
Aromatic? Fragrant foliage when creased

Plant habit

Height at maturity 60 cm
Spread at maturity 30 cm
Growth rate fast

Botanical data

Genus

Salvia

Species

viridis

Cultivar

Blue Monday

Family

Lamiaceae

Other common names

Painted Sage, Annual Clary

Origin

Cultivar or hybrid

Planting and care

Sowing is generally done directly in place as this technique yields better results.

Sow directly in place in spring (April-May), in well-prepared and loosened soil, burying the seeds under 3 mm (0in) of vermiculite. Then thin out to leave one plant every 30 cm (12in).

Sowing in trays is also possible:

Sow in February and March, in a tray filled with sterilised compost, without covering the seeds as they need light to germinate. Then place the tray at a temperature of 24 °C (75.2°F). Germination will take 10 to 14 days. Three weeks after sowing, transplant into trays or pots of sandy compost. Sage plants are susceptible to damping off.

Grow in a bright location, at a cool temperature of 16 °C (60.8°F) and only water when the soil is dry. Feed moderately every three weeks with a diluted balanced fertiliser.

Transplant outdoors in the third week of May, at a distance of 30 cm (12in). Sage plants thrive in full sun or light shade and prefer rich, well-drained soil. Removing faded flowers allows the plants to bloom continuously. Occasional feeding with soluble fertiliser is a good idea.

Sowing period

Sowing period March to April
Sowing method Sowing under cover
Germination time (days) 14 days

Intended location

Suitable for Meadow, Rockery
Type of use Border, Edge of border, Container, Slope
Ease of cultivation Amateur
Exposure Sun
Soil pH Any
Soil moisture Dry soil, Moist soil, rich, well-drained

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