It depends on how big they are. If they’re from smaller, thinner sunflowers, then you could get away with tilling them into the garden and letting them compost on site. If they’re of the thicker variety, you’ll probably want to break them down yourself and compost them in a dedicated compost heap.
It depends on how big they are. If they’re from smaller, thinner sunflowers, then you could get away with tilling them into the garden and letting them compost on site. If they’re of the thicker variety, you’ll probably want to break them down yourself and compost them in a dedicated compost heap.