Carnation Seeds Grenadin Double Mix | Dianthus caryophyllus Fragrant Double Flowers

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Dianthus caryophyllus 'Grenadin Double Mix'
Traditional fragrant carnation with colourful fully double flowers on strong stems

Dianthus caryophyllus 'Grenadin Double Mix' is a traditional garden carnation producing beautifully fragrant, fully double flowers on strong upright stems. The colourful mixture includes rich shades of red, pink, rose, yellow and white, creating a classic cottage-garden display with the unmistakable spicy, clove-like fragrance associated with old-fashioned carnations.

Grenadin is particularly valued as a cut flower, combining sturdy stems, attractive double blooms and excellent fragrance. Plants form compact clumps of distinctive blue-green foliage and flower abundantly through summer. Grown primarily as a biennial, it is an excellent choice for sunny borders, cutting gardens and traditional flower beds.

Why You'll Love It

● Beautiful fully double flowers in a colourful mixed selection

● Strong, sweet and spicy clove-like fragrance

● Excellent long-stemmed flowers for cutting and arrangements

● Classic old-fashioned carnation with attractive blue-green foliage

● Abundant summer flowering from established plants

Ideal For

● Cut flower gardens

● Scented gardens

● Cottage gardens

● Sunny borders and flower beds

● Bouquets and floral arrangements

How to Sow & Grow (UK)
Sow indoors: February–April or June–August
Plant out: May–June for spring-sown plants or August–September for summer-sown plants
Direct outdoors: May–July, for flowering the following year
Flowering: June–August, mainly in the second year
Life cycle: Biennial or short-lived perennial
Germination temperature: Approximately 18–20°C (64–68°F)
Average germination time: 7–21 days
Depth: Sow approximately 2–5 mm (⅛–¼ in) deep and cover seeds lightly with fine compost
Light required: No – seeds should be lightly covered for germination
Moisture: Keep compost consistently moist but not waterlogged during germination; established plants prefer moderate moisture and good drainage
Environment: Full sun
Soil type: Fertile to moderately fertile, neutral to alkaline, well-drained soil
Plant spacing: Approximately 25–30 cm (10–12 in)
Mature height: Approximately 50–60 cm (20–24 in)
Expert Growing Tips

● For the traditional biennial growing method, sow in early to midsummer and establish young plants before autumn; they will overwinter and provide their main flower display the following summer.

● Cover seeds only lightly with fine compost. Grenadin seed germinates readily at around 18–20°C when kept consistently moist but not saturated.

● Choose a sunny position with excellent drainage, particularly over winter, as carnations perform poorly in persistently wet ground.

● Pinch young plants once established to encourage branching and produce more flowering stems for cutting.

● Cut flowers regularly and remove faded blooms to keep plants tidy and encourage continued flowering through summer.

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