I didn't know about this but after several documentaries on the medium to long term impact of these projects many areas being more detrimental than beneficial I tend to be a bit skeptical. I get particularly skeptical when the whole website is geared towards taking in corporate donations rather than teaching how to do it and direct action and a sort of wiki of how to do it yourself as well as evangelizing that.

I didn't spend too long on the website but this page https://justdiggit.org/dig-in/farmer/start-regreening/ seems to be the closest to that, yet it's still no instructions and just marketing. I don't want to sound too negative or make a judgment call with too little information but wanted to share my worries as it has become all too common for grifters to take advantage of the situation in a sort of partnership with huge corporation leadership teams. They get free money and the leadership team gets to greenwash whatever they do in their core business.

I never researched this specific one in detail other than a few minutes now, but the company I worked for previously used to do this style of donations and we found a lot of projects like this.