Astéracées • Helianthus annuus

Giant Mammoth Sunflower - Organic

"A solar giant that watches over the vegetable garden and feeds both birds and gardener."

$4.49

Number of seeds

The giant Mammoth sunflower , Helianthus annuus, is one of those companions that transforms the vegetable garden into a true landscape. With its imposing stature and large golden inflorescences, it creates a vertical landmark in the living garden, visible from afar and appreciated by both humans and small wildlife.

Throughout the changing seasons, this sunflower silently follows the light, first offering broad, inviting foliage, then large flower heads adorned with thousands of blossoms that attract pollinators. In late summer, the seed-laden heads become a sought-after food source for birds, extending its beneficial presence in the garden's ecosystem.

  • Growing climate: Warm season
  • Sowing difficulty level: Easy
  • Care required: Occasional
  • Growth: Summer growth

Annotation: Large variety that appreciates a location sheltered from strong winds.

The seeds of the giant mammoth sunflower are eaten roasted or dried, as a snack or added to breads, salads, and cereal mixes. They can also be pressed for oil in some traditions, although this is generally reserved for larger-scale cultivation.

The seeds also serve as a choice food for birds, which can be offered whole in feeders or left directly on the stems in the garden for natural winter feeding. The large, dry stems can be used in crafts to create small structures or supports in the garden.

Giant Mammoth Sunflower - Organic

$4.49

$4.49

écoumene seeding advice

Seeding type

Indoor and outdoor seeding

Germination time

5-12 jours

Germination temperature

21° to 27° Celsius

Sowing depth

Sow seeds 2-3 cm deep

Transplantation

Difficult Transplantation

Technical

Row sowing

Growing conditions

Number of days to maturity

Harvest at ± 110 days

Hardiness zone

Zone-3b

Distance between plants

40 cm

Distance between rows

60 cm

Optimal brightness

Sun plant

Soil texture

Loose (silty) soil

Soil moisture

Cool, well-drained soil

Soil fertility

Plant very demanding in bacteria-dominant compost

optimal soil pH

acidic pH

Average plant height

300 cm

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