I planted pink-eyed purple hull peas and sunflowers over the area my septic drain field went since the soil was bare. Earlier I'd scattered the last of some cover crop mix over part of that area too. I got pretty good results with the peas, less so with the sunflowers which are short though some are flowering, but also had a few other things catch my eye that I am scratching my head over.
Here's a general view of the plot:
The mystery stuff below is way in the back left of that picture. I scattered the cover crop mix back there before the septic field was dug. Not much of the cover crop germinated except in that area where the soil was churned up a bit.
This is the first:
Is that sorghum? Sorghum-sudangrass? At first I though it was some corn planted by crows or something, but as it grew I realized it was not corn. Another thought is millet of some sort.
Then there are a scattering of these:
Appears to be a legume, but I don't know it. Maybe pigeon pea? They aren't very tall, yet, but seems to be aiming up well. A few are 18" or so and starting to appear over the peph peas, some of which are also that tall but tending to sprawl at that height. You can barely see pale yellow flowers in the center of the picture that look like pea flowers, though these are small compared to the peph peas around them. They don't look like the cowpea family. You can see a small peph pea peeking from behind that foreground mystery.