seedgrain

Nor do they show that the seed produced on those degenerated fields probably would no longer sprout well enough to be used as seedgrain, so new seed would have been imported into the system each season, bringing with it new supplies of plant nutrients.

Organic Gardener's Composting Steve Solomon

And now from without, what mystic influences does it not send inwards, even to the centre; especially in those plastic first-times, when the whole soul is yet infantine, soft, and the invisible seedgrain will grow to be an all overshadowing tree!

Sartor Resartus, and On Heroes, Hero-Worship, and the Heroic in History Thomas Carlyle 1838