Organic 'Giant Mammoth' Sunflower

Latin name Helianthus annuus
Quantity per packet About 40 seeds
$4.49

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Product information
Product
identification
Latin nameHelianthus annuus
FamilyAsteraceae
TypeAnnual flower
CycleAnnual
Quantity per packAbout 40 seeds
Code produitJAREC-0274
Product
description

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
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
ExposureSun
Soil
Rich and well-drained
Watering
Moderate
Bloom,
harvest
and garden
Garden use
Flowerbeds, temporary hedges, windbreaks, pollinator flowers, natural stake
Bloom period
July to September
Harvest
70 to 90 days after sowing
Size
and facts
Height2.5 to 3.5 m (8 to 11.5 ft)
Spread45 to 60 cm (18 to 24 in)
Planting
partners
Good companions
Climbing beans, cucumbers, corn
Avoid planting with
Potatoes
The availability of our seeds varies depending on seasonal availability, production schedules and supplier inventory. Certain varieties may only be offered for a limited time based on their natural growth cycle, sowing period or available stock. These product pages are designed to help and inspire gardeners in choosing the right seeds for vegetable gardens, flower beds, pollinator gardens, container growing, naturalization projects and sustainable outdoor spaces.