RE: food plot growing, how long before some use?
biologic brassica mixes do work very well for some deer herds - Usually most attractive in November after late frosts - but some people have success as a summer plot as well. - I think it has more to do with what else is available to the deer at each time of year.
Its never been a great plot for me - but I like the variety - and I'll put in another acre this spring/summer to mix up my standard plots.
understand - with a a 40ft x 40 ft plot is hard to judge the deer's usage - simply because they will not change their travel patterns much for such a small plot - any usage you observe will be from deer already passing by.
With plots 1-2 acres (40000-80000 sq ft) in size - you get a better idea of how the local herd prefer's the product.
FH