Pentas, also known as Egyptian stars because of their five-pointed petals, are slow to bloom when you start from seed, but you can buy starter plants that are already in flower by shopping on Amazon. Whether you choose to plant pentas in the ground or in containers, make sure to position them in strong sunlight. Pentas appreciate regular watering and the occasional deadheading, but don’t need much else. Get ready to enjoy the butterflies and hummingbirds that they’ll attract to your garden. Available from Amazon; $24.99 for four plants.