Fill the collins glass to the top with ice cubes
Pour 0.5 oz of lemon juice, 0.35 oz of elderflower syrup, and 0.35 oz of chamomile liqueur into the mixing glass
Add 0.35 oz of grapefruit liqueur and 1.7 oz of botanical gin
Fill the mixing glass to the top with ice cubes and carefully stir with a bar spoon
Strain into the collins glass and fill with club soda
Garnish with a mint sprig and an orange wheel