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Unconditional Satisfaction GuaranteeNo Shipping Fees Above 302 Months to Decide. Returns Simplified.Helianthus annuus CERIFIED ORGANIC Edible seeds Food for birds and bees Plants grow to 3.5m (12\’) tall Benefits from staking Mature later in summer CERTIFIED ORGANIC! Russian Mammoth heirloom sunflowers mature a little later in summer but grow to an impressive 3.5m (12\’) tall, with heavy heads that can grow to 50cm (20\”) in diameter! Plants benefit from staking as the heads get BIG. The seeds are large, tasty and edible; dry roast them in the oven and add optional sea salt. You will know the seeds are mature when chickadees start clinging to the downward pointing faces of the enormous flower heads. This is a fun plant to grow with young people as it becomes truly massive in just a couple of months. Here are some key details: They thrive in full sun and prefer moderately fertile, well-drained soils. They also need a constant supply of water and are heavy feeders, especially needing phosphorus and potassium Annual Approx. 25 Seeds
