Keep in mind when planting that Petite Bronze is thought of as half hardy, so remember to watch your frost dates and ensure you have this plant protected when the temperature dips.
Ensure a distance of
8.97 inches (23.0 cm) between seeds when sowing - look to sow at a depth of approximately
0.0 inches (0.0 cm). Soil temperature should be kept higher than
18°C / 64°F to ensure good germination.
By our calculations, you should look at sowing Petite Bronze about 90 days before your last frost date.
Ensure that temperatures are mild and all chance of frost has passed before planting out, as Petite Bronze is a half hardy plant.