[Tilted Irish Kilt]

Black Agnes:" Hmmm, now I’m thinking of starting that corn a couple weeks earlier than I’d planned. I have a ‘honey do’ project now."

LMAO !!
HOT FRAMES can be used to extend growing season , or start earlier plantings outdoors for early spring.
You just have to be aware of daytime temperatures and available sunlight so that you don't 'steam' the new seedlings. A vent is as simple as a stick .
Both Cold frames and Hot frames are best if angled southward and higher in the back so they catch (Winter) maximum sunlight, and less sunlight reflectivity.

[Black Agnes]

Annnnnd, 4w4d after I planted it, my corn is silking beautifully. I didn’t wander out there for a few days as I was busy in the other part of the yard but I checked on it around lunch today. Each stalk has 2 or 3 ears. I guess it really does like chicken poop.