Keep in mind when planting that Midnight Lace is thought of as tender, so it is really important to ensure that the outside temperature is well above freezing before planting or moving outdoors. Ensure your soil is loamy, sandy and silty and has a ph of between 6.1 and 7.8 as Sweet Potato is a weakly acidic soil to weakly alkaline soil loving plant.
Look to ensure a distance
1.46 feet (45.0 cm) between seeds when sowing - bury at a depth of at least
3.9 inches (10.0 cm) deep.
By our calculations, you should look at sowing Midnight Lace about 20 days after your last frost date.
Ensure that temperatures are mild and all chance of frost has passed before planting out, as Midnight Lace is a tender plant.