We like to use Growthcraft on our server instead of HarvestCraft, as it's a bit cleaner. We added some custom recipes too. Some default support for this mod would be nice. Most of the plants have some requirements, so not sure if right click harvest is going to make sense though.

The fork of the mod in main development is this one, it seems: https://github.com/Alatyami/Growthcraft-1.7

If you are interested in adding the custom recipes to Hunger Overhaul too, I could show you a list of what we run.

I'd be willing to help develop this module, if needed.

What exactly do you mean by default support?

Not sure how I feel about custom recipes. All of the recipe changes currently in the mod are due to backwards compatibility; other mods are probably better for handling recipe customization.

By default I mean that I already have a bunch of tweaks I run to make the two work together, but they feel hackish and default support (aka, putting a module in HO itself) would be preferable.

I guess what would be needed is registering the different plants for food values and looking at right click harvest for some of them.