Raw Candy Corn for Home Instance
Not sure where it is in the Grove, unfortunately. I haven’t looked. For human characters, it’s right next to the Quartz node.
Take note, however, that the Candy Corn node (as well as the Quartz node) is account wide. You can log onto any of your characters and go to their home instance and the nodes will be there. (You can only harvest from each node once per account per day though.)
You have to go into your home instance. Each major city has a home instance, so you don’t have to go to your racial specific one. For instance, you can take an asura into Salma in DR.
[TTBH] [HATE], Yak’s Bend(NA)
If you haven’t found it already the Grove home instance is right beside Ronan’s Waypoint on the lower floor. You will get a pop up to enter an instance and your home instance nodes should be close by.
Home instances are also marked on the main maps of the city by stating that it is a “Home” area.
Hope that helps.
As others have said, you can go into any of the home instances. In the Human one, it’s at the front on the right. In the Asura one, it’s just straight ahead from the entrance.