Yes, it is realistically possible to grow feed for rabbits. In fact, I've written articles exploring the suitability of blackberries and green beans as potential rabbit food options. These nutritious choices can be incorporated into a well-balanced diet for rabbits. Growing your own rabbit feed, such as blackberries (
https://petnectar.com/can-rabbits-eat-blackberries/) and green beans(
https://petnectar.com/can-rabbits-eat-green-beans/) , not only allows you to control the quality of their diet but also provides them with fresh and wholesome nutrition.
It's important to consider the specific dietary needs of rabbits and ensure that any homegrown feed meets those requirements. If you're interested, I can share more information from my articles or provide additional tips on cultivating rabbit-friendly food.