Can you tell me how to care for it. Do I cut it back, etc.? A: I am going to say it is either Sawtooth sunflower, Giant sunflower or Maximilian sunflower. They all grow up to 10 feet tall and ...
Similar work is beginning in the native prairie plants of the Silphium genus, which we are domesticating de novo to provide a sunflower like plant suitable for perennial permaculture in the future.
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