That was my experience as well. I planted them, and the deer ignored them for 2 years. Then they figured it out in year 3. It was frustrating, I agree, because in the first 2 years there were bulbs frozen in the ground in December, the deer just did not know what they were.
Keep the faith, they will figure it out. In areas where the various brassicas species aren’t widely grown as an agricultural crop, it takes several years for enough deer to try the brassicas so that they become part of the deer’s “food memory”. Since fawns learn about food by watching the doe and seeing/smelling what goes into her mouth, once you establish the brassicas in the food memory of your deer, it gets passed from generation to generation.
One thing that I tried that seemed to help and that I’ve seen recommend is to walk around the plot and pull some turnips and radish and just stomp the #### out of them. Get that juice out there and release all that scent all over in the plot. The idea is that deer are more curious about scent than sight, so something that smells sweet will encourage them to seek out the source more quickly. I don’t know that this is scientific or not, but I read it on another forum, I tried it last year, and the browsing activity increased right after that. Can’t be sure that was the cause, but what can it hurt to try it was my thought.
Brassicas pay off in the long run. Last night I was watching one of my plots and I had 14 deer with their noses down, pawing away snow, to pull out forage turnips and radish. What I love most about brassicas is the staying power. After all the other plots are mowed to the ground, the deer still have brassicas to eat because they become highly palatable only after hard frosts. The deer ate the greens, but the root portions were left in the plot until they became frost-sweetened and then for the last 3 weeks the deer couldn’t leave them alone.
Grouse