Biennial Flower Seeds

Sweet William ‘Holborn Glory’ Seeds (Dianthus barbatus)

Sweet William ‘Holborn Glory’ is a charming biennial or short-lived perennial with clusters of bi-colored red, pink, and white flowers. Blooming from late spring to early summer, it’s perfect for borders, cottage gardens, and pollinator-friendly spaces. Easy to grow and long-lasting, it adds vibrant color and fragrance to any garden.

What Makes It Special

• Eye-catching clusters of red, pink, and white flowers

• Fragrant and attractive to bees and butterflies

• Hardy and easy to grow

Key Features

• Botanical name: Dianthus barbatus

• Biennial/perennial

• Height: 30–45 cm

• Bloom time: Late spring to early summer

Ideal For

• Borders, cottage gardens, and mixed plantings

• Pollinator-friendly gardens

• Containers and cut flower arrangements

Sowing

• Sow indoors Feb–Apr or outdoors Apr–Jun

• Cover seeds lightly with soil

• Germination: 10–14 days at 18–22°C

• Space seedlings 25–30 cm apart

• Flowers the following year

Pansy Swiss Giant ‘Flame’ Orange Seeds (Viola wittrockiana)

A vibrant and fiery variety, Swiss Giant ‘Flame’ Orange produces large glowing blooms in rich orange tones with a striking dark blotch at the center. Hardy and easy to grow, it delivers bold color for spring and autumn displays in beds, borders, and containers.

What Makes It Special

• Bright flame-orange flowers with a bold dark face

• Large, showy blooms on compact plants

• Long-lasting color in cool seasons

Key Features

• Botanical name: Viola wittrockiana

• Hardy annual/biennial

• Height: 15–20 cm (6–8 in)

• Bloom time: Early spring and autumn

Ideal For

• Beds and borders

• Containers and pots

• Cool-season garden color

Sowing

• Sow indoors Feb–Apr or outdoors May–Jun

• Lightly cover seeds with soil and keep moist

• Germination: 10–21 days at 15–20°C

• Transplant seedlings 15–20 cm apart

• Flowers in spring and autumn after sowinG

Hollyhock ‘Summer Carnival’ Double Mix Seeds (Althaea rosea)

Hollyhock ‘Summer Carnival’ is a striking biennial with tall spikes of fully double, ruffled blooms in a vibrant mix of colors. Blooming from mid to late summer, it adds drama and vertical interest to borders, cottage gardens, and pollinator-friendly spaces. Hardy and easy to grow, it attracts bees and butterflies while creating a stunning floral display.

What Makes It Special

• Fully double, ruffled blooms in a vibrant color mix

• Tall, dramatic flower spikes ideal for vertical accents

• Attracts pollinators and adds cottage garden charm

Key Features

• Botanical name: Althaea rosea

• Biennial

• Height: 150–200 cm

• Bloom time: Mid to late summer

Ideal For

• Borders and cottage gardens

• Pollinator-friendly plantings

• Backgrounds, vertical accents, and cut flowers

Sowing

• Sow indoors Feb–Apr or outdoors Apr–Jun

• Cover seeds lightly with soil

• Germination: 14–21 days at 18–22°C

• Space seedlings 40–50 cm apart

• Flowers the following year

Hollyhock ‘Majorette Double’ Mix – Seeds (Althaea rosea)

The Hollyhock ‘Majorette Double’ Mix is a stunning dwarf variety producing fully double flowers in a wide range of colors, including pink, red, yellow, and white. Compact and bushy, it is perfect for smaller gardens, borders, and containers while still giving that classic cottage garden charm.

Why Grow ‘Majorette Double’?

• Fully double blooms in a vibrant color mix

• Shorter, dwarf habit compared to traditional tall hollyhocks

• Long summer flowering season

• Attracts bees and pollinators

Key Features

• Type: Half-hardy biennial (often flowers in the first year)

• Height: 60–80 cm

• Flowering: June–September

• Position: Full sun, well-drained soil

• Uses: Borders, containers, cottage garden plantings

Ideal For

• Smaller gardens and courtyards

• Adding vertical interest without excessive height

• Pollinator-friendly spaces

Sowing & Growing

• Sow indoors: February–April in trays or pots

• Sow outdoors: May–June directly in soil

• Germination: 14–21 days at 18–20°C

• Transplant seedlings 40–50 cm apart

• Deadhead faded flowers for extended blooming

Pansy Clear Crystals ‘Orange’ Seeds (Viola wittrockiana)

A glowing variety, Clear Crystals ‘Orange’ produces large, blotch-free blooms in vivid orange for a bright and uniform display. Hardy and compact, this pansy is perfect for adding cheerful color to spring and autumn beds, borders, and containers.

What Makes It Special

• Clear, blotch-free orange blooms

• Large, vibrant flowers on sturdy plants

• Long-lasting color in cool seasons

Key Features

• Botanical name: Viola wittrockiana

• Hardy annual/biennial

• Height: 15–20 cm (6–8 in)

• Bloom time: Early spring and autumn

Ideal For

• Borders and garden beds

• Containers, pots, and window boxes

• Bright, uniform seasonal displays

Sowing

• Sow indoors Feb–Apr or outdoors May–Jun

• Lightly cover with soil, keep moist

• Germination: 10–21 days at 15–20°C

• Transplant seedlings 15–20 cm apart

• Flowers in spring and autumn after sowing

Sweet William 'Super Duplex' Mix Seeds (Dianthus barbatus Mix Double)

Sweet William 'Super Duplex' is a biennial flower prized for its lush, double-layered blooms in a mix of vibrant colors. Its dense flower clusters and upright growth make it perfect for borders, cottage gardens, and cut flower arrangements, adding a bold and elegant splash of color.

What Makes It Special

• Produces dense, double-layered flower clusters

• Vibrant mix of colors for eye-catching displays

• Compact, upright growth ideal for borders and mixed beds

• Excellent for cut flowers with long-lasting blooms

Key Features

• Botanical name: Dianthus barbatus

• Common name: Sweet William 'Super Duplex'

• Seed count: Approx. seeds per pack

• Height/Spread: 30–50 cm tall, 20–30 cm spread

• Position: Full sun to partial shade, well-drained soil

• Flowering period: Second year; late spring to early summer

• Lifespan: Biennial

Ideal For

• Borders, cottage gardens, and mixed flower beds

• Cut flower arrangements

• Pollinator-friendly gardens

• Containers and patio planting

Sowing Instructions

1. When to sow:

   • Indoors: February–April for transplanting

   • Outdoors: April–May in well-prepared soil

2. How to sow:

   • Sow seeds thinly on the surface and press lightly into soil

   • Keep soil moist until germination (10–20 days)

3. Transplant/Thin: Space seedlings 20–30 cm apart

4. Care: Protect young plants from frost; deadhead spent flowers to prolong bloom

Pansy Swiss Pansy Blue ‘Ullswater’ Seeds (Viola wittrockiana)

A classic pansy variety with large, velvety deep-blue blooms and a dark central blotch. Blue ‘Ullswater’ is compact, hardy, and perfect for bringing bold color to spring and autumn gardens in beds, borders, and containers.

What Makes It Special

• Rich, velvety blue flowers with strong garden presence

• Reliable variety for cool-season planting

• Long-lasting blooms from early spring through autumn

Key Features

• Botanical name: Viola wittrockiana

• Hardy annual/biennial

• Height: 15–20 cm (6–8 in)

• Bloom time: Early spring and autumn

Ideal For

• Garden beds and borders

• Containers, pots, and window boxes

• Cool-season color displays

Sowing

• Sow indoors Feb–Apr or outdoors May–Jun

• Cover seeds lightly with soil and keep moist

• Germination: 10–21 days at 15–20°C

• Transplant seedlings 15–20 cm apart

• Flowers in spring and autumn after sowing

Horned Pansy 'Prince John' Seeds (Viola cornuta)

The Horned Pansy 'Prince John' is a delightful heirloom variety of Viola cornuta, loved for its charming golden-yellow blooms with subtle shading. Compact and long-flowering, it’s ideal for brightening up borders, containers, and rock gardens with a cheerful splash of sunshine. Hardy and easy to grow, it also attracts pollinators to the garden.

What Makes It Special

• Distinctive golden-yellow flowers

• Hardy perennial (often grown as a biennial)

• Perfect for naturalizing or cottage-style gardens

Key Features

• Botanical name: Viola cornuta

• Perennial (treated as biennial in some climates)

• Height: 15–20 cm

• Spread: 20–25 cm

• Flowering: May–September

Ideal For

• Cottage gardens and naturalized plantings

• Borders, pots, and rockeries

• Long-lasting displays from spring to autumn

Sowing

• Sow indoors: February–April, cover lightly with compost

• Germination: 10–21 days at 15–20°C

• Transplant outdoors: after last frost, 20 cm apart

• Prefers sun to partial shade and moist, well-drained soil

Pansy Swiss Giant ‘Yellow’ Seeds (Viola wittrockiana)

A cheerful and vibrant variety, Swiss Giant ‘Yellow’ produces large golden-yellow blooms with a striking dark blotch at the center. Hardy and reliable, this pansy brings a burst of sunshine to spring and autumn displays in beds, borders, and containers.

What Makes It Special

• Bright golden-yellow blooms with bold dark centers

• Large flowers on compact, sturdy plants

• Long-lasting color in cool seasons

Key Features

• Botanical name: Viola wittrockiana

• Hardy annual/biennial

• Height: 15–20 cm (6–8 in)

• Bloom time: Early spring and autumn

Ideal For

• Beds and borders

• Containers, pots, and window boxes

• Bright seasonal color displays

Sowing

• Sow indoors Feb–Apr or outdoors May–Jun

• Lightly cover with soil and keep moist

• Germination: 10–21 days at 15–20°C

• Transplant seedlings 15–20 cm apart

• Flowers in spring and autumn after sowing