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