Morning Glories are the ones for me! IPOMEA Heavenly Blue. Be careful! the package seeds are coated to make people sick if they eat them by accident. Once you have grown your first plants you will have enough seed to last you a lifetime. The magic number is 360 for those Heavenly Blue moments, watching the flowers grow in your mind. These flowers are excellent for colour blindness, you will see colour frequencies you never thought possible.