Preheat oven to 350°F (175°C). Grease pan and line with parchment paper.

Whisk flour, baking powder, baking soda, cardamom, and salt in a medium bowl. Stir in orange zest and poppy seeds.

Beat softened butter and sugar until pale and fluffy.

Add eggs one at a time, beating well. Mix in vanilla extract.

Stir orange juice and yogurt together. Gradually add dry ingredients and wet mixture to butter mixture, alternating, starting and ending with dry.

Pour batter into pan and smooth top. Bake 45–55 minutes until a toothpick comes out clean.

Cool in pan 10 minutes, run knife around edges, transfer to wire rack. Optionally drizzle with orange glaze.