Quantity
About 40 seeds
Exposure
Sun
Discover the plant
Organic 'Giant Mammoth' Sunflower
Helianthus annuus
FamilyAsteraceae
TypeAnnual flower
CycleAnnual
Quantity per packetAbout 40 seeds
Product codeJAREC-0274
The Helianthus annuus 'Mammoth Giant' sunflower is a spectacular organic variety that transforms the garden into a living canvas with its impressive stature and abundant blooms. From the very first weeks, it vigorously shoots skyward, forming tall, sturdy stems that immediately add structure to flowerbeds, temporary hedges, and sunny vegetable patches. Its immense, bright yellow flowers, sometimes more than 30 cm wide, capture the light with striking intensity and attract a host of pollinators from morning until night. Easy to grow and naturally robust, it generally doesn't require staking, making it a reassuring choice for gardeners who want a spectacular effect without excessive complication. Its large size also allows it to be used as a summer windbreak or as natural support for certain climbing plants, adding a practical dimension to its radiant beauty. Throughout the summer, it becomes a true landmark in the garden, almost monumental, while actively contributing to local biodiversity. We love to watch it follow the light and dominate the space with a simple, almost solar elegance. Both majestic, useful, and easy to grow, 'Mammoth Giant' is a must-have for vibrant and generous gardens.
Sowing guide
From packetto germination.
Sowing periodMay to June
Sowing depth2 to 3 cm (3/4 to 1 1/8 in)
Germination temperature18 to 24°C (64 to 75°F)
Germination time7 to 14 days
Soil and care
The rightconditions.
Exposure
Sun
Soil
Rich and well-drained
Watering
Moderate
Bloom and dimensions
The completeprofile.
Bloom periodJuly to September
Harvest70 to 90 days after sowing
Garden associations
What to plantwith it.
Good companionsClimbing beans, cucumbers, corn
Avoid planting withPotatoes
Flowerbeds, temporary hedges, windbreaks, pollinator flowers, natural stake
