Prepare the cake pan and preheat oven: Adjust oven rack to lower-middle position and preheat oven to 350 degrees. Spray 10-cup Bundt pan with nonstick baking spray, or brush a generous amount of melted butter and dust with flour to prevent cake from sticking.
Whisk flour, baking powder, baking soda, and salt in large bowl.
Combine lemon juice and buttermilk in a medium bowl.
In small bowl, gently whisk eggs and yolk to combine.
In a standing mixer, cream butter, lemon zest, vanilla, dandelion petals, and sugar at medium-high speed until pale and fluffy, about 3 minutes; scrape down the sides of the bowl with a rubber spatula. Reduce to medium speed and add your eggs, one at a time mixing until incorporated.
Reduce to low speed; slowly add in your flour mixture to your creamed butter, followed by some of the buttermilk lemon juice mixture, mixing until just incorporated. Repeat using half of the remaining flour mixture and all of the remaining buttermilk mixture.
Gently fold in your strawberries.
Pour cake batter into prepared bunt pan. It should be thick.
Bake until the top is golden brown and a wooden skewer or toothpick inserted into the center comes out with no crumbs attached, 45 to 50 minutes.
Lemon glaze:
Whisk 2 tablespoons lemon juice, buttermilk, and confectioners sugar until smooth. Add lemon juice until desired consistency (should be thick but still pourable)
Cool cake in pan for two hours. Then, invert directly onto the rack to glaze. Let glaze harden at room temperature, then cut into slices and serve.
Garnish with dandelion petals if desired