Ipomea is a climber that can grow up to 5m. Although it is considered an annual plant it can be grown as perennial in places with no frost danger. Also, there are some types of Ipomea that are strictly annual like Ipomea nil(Japanese morning glory) and perennial Ipomea indica that is reproduced by cuttings. 
It has been known for hundreds of years and grown as a medicinal plant, especially in China which grew it as a laxative, and Latin America where it was grown for its psychedelic seed effect.
This annual plant can be very invasive, especially if left unattended.

 Luckily it will freeze during the winter. The plant produces huge amounts of big leaves on tall stems that roll around the things and climb. 

If they are left without any support they can be grown as a ground covering plant mimicking Nasturtium. 

It likes sunny places with well-drained soil and plenty of water. In full sun it should be watered twice a day because once the soil is dry the leaves will wilt, but as soon as they are watered they will come back to life.
If grown with the support it is great coverage for fences and even great natural curtain. I’ve started growing my Ipomea to make a natural curtain for our western bedroom, which is in the sun the whole day. 

The best part of this plant is the flowers, which are strongly colored and beautiful. They can have almost any color from white, to pink, purple and blue. 

Ipomea purpurea

Ipomea tricolor

Flowers contain male and female parts and produce huge amounts of seeds that are located under the flower. 

Sadly flowers don’t last for too long. They usually open in the morning and by the afternoon they are gone. 

The good thing is that the plant will produce lots of flowers and it will continuously flower from July to September, or until the first frost. 
The plant is very frost sensitive so it should be sown after the last frost date, or indoors in April. It shouldn’t be sown too early because it will grow too tall and it is a delicate seedling so it could easily break while being transplanted. Still, the seeds that are self-sown will not freeze and will not grow before May.

Ipomea is a great annual climbing solution for places that need coverage but can’t grow perennial plants. Also, it will be great coverage for fences, but in places that don’t have frost, it could easily become a garden problem if left unattended.