Well, one will find that sweet corn is a commercial crop that comes to harvest in south florida in the february-march time frame for the most part, which would indicate that it does not make a good summer crop there.

UF IFAS indicates south Florida planting dates from August to March

Here is a link that might be useful: IFAS guide

I bet putting seed in the ground in march is pushing it for south fla, absent white plastic and drip irrigation.