OK again, before suggesting any seed here, get the soil test and tell us what that says,
as if we recommend a seed and the soil won't allow it to grow and thrive, or it will again be a waste of time and money planting it!
NEXT also, tell us HOW small this plot is, as in MEASUREMENTS of it, don't have to be exact, but try and be close, use a range finder to get measurements if needed, or some tape measures(50-100 ft one's are rather common)
so, is it an 1/8 an acre a 1/16, or ??? larger /smaller???
as again, NOT knowing this info is hard to suggest something that will both grow and LAST till OCT, and or be attractive to deer then as well!