Large-toothed sunflower - Helianthus
This perennial species grows up to 5 m tall and produces red stems bearing, from August to October, an abundance of 5 to 8 cm-diameter flowers with magnificent yellow petals.
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in the ground, in bucket
After storing seeds for a few weeks in the fridge, sow in cups 2 to 3 weeks before planting. Transplant with the root ball after the last frosts, 1 m apart in all directions. Transplanting is a delicate operation, but it allows earlier flowering and offers protection against slugs, which are fond of young seedlings. It is also possible to sow in place, in rows spaced apart, after the last frosts.
March, April
April, May
July, August, September, October
in the ground
sunny
medium
fees, furniture, rich
Helianthus grosseserratus
mid-season
60 seeds
Yellow
From 400 to 500 cm
elongated
North America
This species is used by the Mesquakie people, who make compresses from the flowers to soothe burns.
