Ipomoea alba

A superb climber for greenhouse, conservatory, or outdoors in a sheltered position, freely producing from June to September, during the evening, their beautiful, sweet-scented, saucer-shaped flowers, 6ins or more across. 10ft (3m)

Please use for sowing Jiffy 7 Peat Pellets, soak them in water and put in a plastic pot.
Alternatively, normal seed substrate could be used as well.

Sow the seeds on the peat pellets and cover the seeds with a thin layer of peat (about 2 mm).

Then put the plastic pot in a zip-lock bag - with a pot size of 6 cm , a zip-lock bag of size 12 x 17 cm is recommended . Fill in the zip-lock bag as much tap water with a few drops of universal fertilizer, so that after the absorption of the substrate a few mm of water remain on the bottom. 

Location: on the windowsill or in a small greenhouse in partial shade, daytime temperatures at about 75-83 F, somewhat lower at night at 68-75 F.

price is for 10 seeds