Preheat the oven to 325°F (160°C).
In a mixing bowl, combine the graham cracker crumbs and melted butter. Mix until the crumbs are well coated.
Press the crumb mixture evenly into the bottom of the springform pan to form the crust. Bake for 10 minutes, then remove from the oven and let cool.
In a large bowl, use an electric mixer to beat the softened cream cheese until smooth. Gradually add the granulated sugar, continuing to mix until creamy.
Add in the eggs one at a time, mixing well after each addition. Stir in the vanilla extract and lemon juice.
Gently fold in the huckleberries and flour until evenly combined, being careful not to crush the berries too much.
Pour the cheesecake mixture over the cooled crust and smooth the surface with a spatula.
Bake the cheesecake in the preheated oven for 50-60 minutes, or until the center is set and the edges are lightly browned. A slight jiggle in the center is fine.
Once baked, turn off the oven and crack the oven door. Let the cheesecake cool in the oven for an hour to prevent cracking.
After it cools, remove the cheesecake from the oven and refrigerate for at least 4 hours, or preferably overnight, before serving.