What a difference a month makes!
This organic corn field in Trumansburg, NY was interseeded last July with a crimson clover and annual ryegrass cover crop.
This was the field on April 15:
Here’s the same field only a little more than a month later – May 24…
The moral of the story? Give your cover crop all the time you can spare in your rotation before plowing it under. As the weather warms in the spring, you will see it grow in leaps and bounds, just about surpassing its previous nine months of growth. An interseeded cover crop is held back during the summer it was seeded by the shade of the corn crop, so it really can only take off in the spring, when the heat units really begin to pile up.
Photos by Rod Porter from his farm in Trumansburg, NY.