Jamboree Halo Hollyhock Seeds (Alcea rosea)
The best of the best of the Halo Hollyhocks, Jamboree is a showstopper in every sense, tall, dramatic spires lined with large, satiny blooms featuring glowing halo centers that seem almost hand-painted. Each flower blends rich jewel tones with a contrasting eye, creating depth, movement, and undeniable old-world charm.
Perfect for cottage gardens, fence lines, and statement borders, these hollyhocks rise proudly above the garden, drawing pollinators and admiration. The Jamboree Halo series is known for excellent color clarity, strong stems, and uniform growth, making it a favorite for gardeners who want classic romance with a refined, modern twist.
Once established, hollyhocks bring a nostalgic, storybook quality to the landscape,towering blooms that feel both timeless and celebratory, just as their name suggests.
Growing Information
Botanical Name: Alcea rosea
Common Name: Jamboree Halo Hollyhock
Life Cycle: Biennial to short-lived perennial
Height: 5–7 feet
Light: Full sun
Soil: Well-drained soil
Hardiness: USDA Zones 3–9
Bloom Time: Late spring to summer (usually second year)
Growing Instructions
When to Plant: Spring or late summer
Seed Prep: These can be planted in either spring or fall. Fall planting gives you a better chance of getting blooms the first year. Spring planting provides flowers the second year. Stratification is not generally required but can aid in better germination
Sowing Depth: ¼ inch deep
Germination Temp: 65–75°F
Germination Time: 10–14 days
Water: Keep evenly moist until established
Spacing: 18–24 inches apart
Why Gardeners Love Jamboree Halo Hollyhocks
Large blooms with dramatic halo centers
Tall, architectural flower spikes
Classic cottage and heirloom appeal
Pollinator friendly
Excellent for back borders and cut flowers
This is for 25 seeds
We combine shipping on all seed orders, you pay one flat fee for as many seeds as you would like for no additional shipping. Orders over $35 for any combination of items ship for free to the US
