Try to plant in a location that enjoys full sun and remember to water moderately. Keep in mind when planting that Keiyeul is thought of as half hardy, so remember to watch your frost dates and ensure you have this plant protected when the temperature dips. Ensure your soil is potting mix and loamy and has a ph of between 5.5 and 7.0 as Trailing petunia is a weakly acidic soil to neutral soil loving plant.
Growing Keiyeul from seed
By our calculations, you should look at sowing Keiyeul about 77 days before your last frost date.
Transplanting Keiyeul
Ensure that temperatures are mild and all chance of frost has passed before planting out, as Keiyeul is a half hardy plant.