Drought here is as bad as anywhere and I can't speculate on your odds of success but I would ask a question or 2. End of August weeds only 3' high

$300 to grow a few plants outside

For 300 you should be able to plant a field full. There has been no rain for nearly 2 months temps close to 100 everyday and weeds are 10' high. You must be in a desert. Weeds don't need water to grow. They can feed on humidity without rain. Sounds like they will not need to fly over it will be seen for many miles.