Ensure a distance of
11.9 inches (30.5 cm) between seeds when sowing - look to sow at a depth of approximately
0.25 inches (0.635 cm). Soil temperature should be kept higher than
18°C / 64°F to ensure good germination.
By our calculations, you should look at sowing White Milfoil about 49 days before your last frost date.
Ensure that temperatures are mild and all chance of frost has passed before planting out, as White Milfoil is a hardy plant.