An interesting calendar spread on corn
An interesting spread is certainly ZCN21-ZCZ21, that is, the spread built by buying the corn futures with delivery in July 2021 and selling the corn futures with delivery in December 2021. A calendar spread

Great job David. Thank you.
Good Article
Can we do this for Sep21-Dec 21 ?
Selling Sep 21 and Buying Dec 21 is that a good trading strategy
Do you think its a good ? Any levels to watch in this space ?
Yes, in my book on the best seasonal spreads for 2001, I give the ZCU21-ZCZ21 spread as an alternative to the ZCN21-ZCZ21 spread. The seasonal windows are the same, and in March it was possible to enter or re-enter short on the spread. $17 is a very important level, below that there is a lot of room to go down to at least the $4 area.