Jasmine and Gardenias are related plants in the Oleaceae family but differ in their growth habits, leaves, and flowers. Jasmine is a climber or vine with simple, elongated leaves and star-shaped flowers that are white or yellow. Gardenias are bushes with glossy, dark green leaves arranged in whorls of three or four and showy, creamy white flowers with a waxy texture. Both plants require well-draining soil and regular watering but have different temperature preferences.