Keep in mind when planting that Italian Dark Green is thought of as hardy, so this plant will survive close to or on freezing temperatures. Planting Italian Dark Green in loamy and potting mix soil with a ph of between 5.6 and 6.0 is ideal for as it does best in weakly acidic soil.
Try to aim for a seed spacing of at least
7.8 inches (20.0 cm) and sow at a depth of around
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 Italian Dark Green about 35 days before your last frost date.
As Italian Dark Green is hardy, ensure temperatures are mild enough to plant out - wait until after your last frost date to be on the safe side.