Keep in mind when planting that Plain Leaf is thought of as hardy, so this plant will survive close to or on freezing temperatures. Ensure your soil is loamy and potting mix and has a ph of between 6.0 and 6.0 as Flat leaf parsley is a weakly acidic soil loving plant.
Ensure a distance of
7.8 inches (20.0 cm) between seeds when sowing - look to sow at a depth of approximately
0.25 inches (0.64 cm). Soil temperature should be kept higher than
10°C / 50°F to ensure good germination.
By our calculations, you should look at sowing Plain Leaf about 35 days before your last frost date.
Ensure that temperatures are mild and all chance of frost has passed before planting out, as Plain Leaf is a hardy plant.