Keep in mind when planting that Laurentian is thought of as very hardy, so this plant will tend to survive through freezing conditions. Laurentian requires a loamy and clay soil with a ph of 6.5 - 7.2 - it grows best in weakly acidic soil to weakly alkaline soil.
Ensure a distance of
1.95 inches (5.0 cm) between seeds when sowing - look to sow at a depth of approximately
0.47 inches (1.2 cm).
By our calculations, you should look at sowing Laurentian about 60 days before your last frost date.
Ensure that temperatures are mild and all chance of frost has passed before planting out, as Laurentian is a very hardy plant.
Developed in Canada by interbreeding an Iroquoian native heirloom variety with a British/European purple top variety.
Laurentian (French: Laurentides or Laurentien) may refer to:
The Canadian Shield, aka the Laurentian Shield or the Laurentian Plateau.
And also-
Laurentian language, a language in the Iroquoian family of languages