Emergence: a photo essay of a black walnut grove
There are actually quite a few plants that exhibit varying degrees of tolerance to juglone. Of course there are other considerations to take into account as well --- such as shade - as your canopy grows, available light will also become a limiting factor for most annuals. My addition of the squash beds (this past fall I planted garlic in this same bed) is more in keeping with the horticultural design systems of many Indigenous people, rather than our contemporary forest garden schemes we have come to accept as the standard. In the more traditional 'forest gardens' or shifting cultivation, annual plantings were included at early stages of a woodland gardens development. Sometimes this is called milpa agriculture. This makes a lot of sense to me! You can grow a lot of food in the early years of a forest garden's development, while waiting for your trees and shrubbery to mature. There are many good sources of info. on the internet to let you know what annuals (and perennials) grow companionably with walnuts. Here is a really interesting (albeit lengthy) article on forest gardens and the cultural landscapes of the Haudenosaunne and other Indigenous people.
Thanks for sharing! Your progress is amazing, and I love the addition of the squash plants. I didn't realize they aren't juglone-sensitive.