Sweet William Sweet™ Coral | Dianthus barbatus | Pelleted

Sweet™ Coral is a premium Sweet William (Dianthus barbatus) bred specifically for professional cut flower production, featuring large, fragrant flower clusters in a beautiful warm coral-pink colour. Its sophisticated blend of coral, salmon-pink and warm rosy tones gives the flowers a fresh yet elegant appearance that works beautifully in modern garden-style bouquets and professional floristry.

Unlike cooler pink or deep burgundy Sweet William varieties, Sweet™ Coral brings a warm, luminous colour to arrangements. The coral-pink shade sits beautifully between pink and salmon, making it especially versatile for warm pastel, peach and apricot colour palettes.

Strong, straight stems and substantial flower clusters make Sweet™ Coral an excellent choice for cut flower gardens, seasonal bouquets, wedding floristry and professional flower production.

One of the greatest advantages of the Sweet™ series is its ability to flower in the first year without requiring vernalisation. Unlike traditional biennial Sweet William, plants do not need to experience a prolonged period of cold before flowering.

What Colour is Sweet™ Coral?

The distinctive warm colour is the main attraction of Sweet™ Coral.

The flowers are best described as a beautiful warm coral pink – a sophisticated shade combining elements of:

• Coral pink
• Warm salmon pink
• Soft rosy pink
• Subtle peachy undertones
• Warm pastel tones

Rather than appearing as a cool or bright pink, Coral has a warm, soft and naturally elegant character.

Depending on flower maturity, light and growing conditions, subtle variations in tone may appear between individual florets, adding natural depth and texture to the large flower clusters.

Sweet™ Coral is especially beautiful combined with apricot, peach, blush pink, cream, ivory, dusty rose, burgundy and soft green foliage.

Why is the Sweet™ Series Special?

Traditional Dianthus barbatus is commonly grown as a biennial and may require exposure to cold temperatures before flowering.

The professional Sweet™ series has been bred to flower without vernalisation, allowing growers to obtain flowers during the first growing season.

This provides several important advantages:

• Flowers in the first year
• No vernalisation required
• More predictable crop scheduling
• Professional-quality stems for cutting
• Large, uniform flower clusters
• Excellent performance under cooler growing conditions
• Suitable for greenhouse, high tunnel and outdoor production
• Excellent for succession planting

For cut flower growers, Sweet™ can therefore be incorporated into a planned seasonal cut flower programme without waiting until the second year for flowering.

Plant Information

• Botanical name: Dianthus barbatus
• Common name: Sweet William
• Series: Sweet™
• Variety: Coral
• Flower colour: Warm coral pink with soft salmon and rosy undertones
• Flower type: Large, fragrant flower clusters
• Stem length: approximately 46–91 cm
• Plant habit: Upright
• Position: Full sun
• Preferred conditions: Cool to moderate temperatures
• First-year flowering: Yes
• Vernalisation: Not required
• Seed form: Pelleted
• Best for: Cut flowers, bouquets and wedding floristry
• Growing: Greenhouse, high tunnel and outdoor production

Pelleted Seeds – Easier & More Precise Sowing

Sweet™ Coral is supplied as pelleted seed.

Pelleting surrounds the naturally small seed with a uniform coating, making it larger and easier to handle. This is particularly useful when sowing into plug trays, where accurate placement of one seed per cell is desirable.

Advantages of pelleted seed include:

• Easier handling
• More precise sowing
• Convenient one seed per cell sowing
• Excellent for plug production
• Practical for professional and home growers

Important: during germination, the growing medium must remain evenly moist so that the pellet coating can soften and the seed inside can germinate successfully.

Sowing Sweet™ Coral

For the most uniform plants, sow Sweet™ Coral into plug trays.

Sow one pelleted seed per cell.

Place the pellet onto moist seed-starting substrate and cover lightly. Maintain consistent moisture throughout germination and do not allow the growing medium to dry out.

Sowing Information

• Seeds per cell: 1 pelleted seed
• Sowing: Plug trays or individual cells
• Covering: Cover lightly
• Germination temperature: approximately 18–20°C
• Germination: approximately 3–4 days under optimum conditions
• Plug crop time: approximately 5–6 weeks
• Light: Provide high light after germination
• Growing conditions: Cooler temperatures are preferred after establishment

After germination, gradually cooler conditions help produce compact, strong young plants.

When to Sow?

Because Sweet™ Coral does not require vernalisation, plants can be started from seed and grown to flower during their first growing season.

For an earlier crop, start seeds indoors or in a heated greenhouse.

February–April: a useful sowing period for spring propagation and first-year flowering in temperate climates.

For very early sowings, sufficient light is important. If natural daylight is limited, supplementary lighting can help produce stronger, more compact young plants.

After germination, grow seedlings in a bright location and gradually provide cooler conditions.

Transplant outdoors once the plants are well established and weather conditions are suitable.

Growing for Cut Flowers

Sweet™ Coral was developed specifically for high-quality cut flower production.

Choose a sunny growing position with fertile, well-drained soil. Sweet™ performs particularly well under relatively cool growing conditions.

For strong stems and high-quality flowers:

• Grow in full sun
• Use fertile, well-drained soil
• Maintain consistent moisture without waterlogging
• Provide good air circulation
• Avoid unnecessarily high growing temperatures
• Use flower support netting if required
• Harvest regularly

Sweet™ Coral can be successfully grown in a greenhouse, high tunnel or outdoors.

High light is beneficial, but excessive heat combined with intense light can result in shorter stems. Relatively cool conditions are preferable when growing for premium-quality cut stems.

Perfect for Cut Flowers & Wedding Floristry

Sweet™ Coral is particularly valuable for floristry because of its warm and sophisticated coral-pink colour.

The numerous small flowers form large, rounded clusters that provide beautiful volume and texture in arrangements without overwhelming more delicate focal flowers.

The warm coral colour works especially well in:

• Romantic garden-style bouquets
• Wedding floristry
• Bridal bouquets
• Warm pastel arrangements
• Peach and apricot colour palettes
• Summer bouquets
• Vintage-inspired floral designs
• Professional floristry

Its coral-pink colouring pairs particularly beautifully with apricot, peach, cream, ivory, blush, dusty rose, burgundy and soft green.

The flowers also bring the characteristic pleasant fragrance of Sweet William to freshly cut arrangements.

First-Year Flowering – No Vernalisation Required

One of the most important characteristics of Sweet™ Coral is that vernalisation is not required for flowering.

Traditional Sweet William is commonly grown as a biennial, producing vegetative growth during its first season and flowering after exposure to winter cold.

The Sweet™ series has been bred differently.

Plants can flower during their first growing season, providing much greater flexibility for both professional growers and home cutting gardens.

This makes Sweet™ particularly useful for:

• First-year flower production
• Planned harvest schedules
• Succession sowing
• Greenhouse production
• High tunnel production
• Outdoor cutting gardens

When to Harvest

For the best cut flower quality, harvest Sweet™ Coral when approximately 20–50% of the individual florets in each flower cluster are open.

At this stage, the flower head already displays its beautiful warm coral colour while the remaining florets can continue opening after harvest.

For best results:

• Harvest during the cooler part of the day
• Use clean, sharp cutting tools
• Cut stems at the desired length
• Remove foliage that would remain below the water line
• Place stems into clean water immediately after cutting

The main crop can generally be harvested over approximately 2–3 weeks.

Under suitable growing conditions, cutting plants back after the main harvest may encourage a second flush of flowers.

Why Choose Sweet™ Coral?

• Beautiful warm coral-pink colour
• Sophisticated blend of coral, salmon-pink and warm rosy tones
• Professional variety bred for cut flowers
• Flowers in the first year
• No vernalisation required
• Large, fragrant flower clusters
• Strong, straight stems
• Stem length approximately 46–91 cm
• Excellent filler and secondary flower
• Particularly beautiful for wedding and romantic floristry
• Perfect for peach, apricot and warm pastel colour palettes
• Performs particularly well under cooler growing conditions
• Suitable for greenhouse, high tunnel and outdoor cultivation
• Pelleted seed for easier and more precise sowing

Sweet™ Coral – Warm Coral Pink for Beautiful Bouquets

Sweet William Sweet™ Coral (Dianthus barbatus) combines professional cut flower performance with a sophisticated warm coral-pink colour.

Its beautiful blend of coral pink, soft salmon and warm rosy undertones makes it especially valuable for contemporary floral palettes, romantic wedding arrangements and garden-style bouquets.

Combined with strong stems, fragrant flower clusters, first-year flowering and no requirement for vernalisation, Sweet™ Coral is an outstanding choice for professional flower growers and anyone creating a productive cut flower garden with beautiful warm-toned flowers.