Try to aim for a seed spacing of at least
3.96 feet (1.22 metres) and sow at a depth of around
1.24 inches (3.17 cm). Soil temperature should be kept higher than
18°C / 64°F to ensure good germination.
By our calculations, you should look at sowing Golden Rod about 42 days before your last frost date.
Ensure that temperatures are mild and all chance of frost has passed before planting out, as Golden Rod is a tender plant.
By our calculations, you should look at planting out Golden Rod about 14 days after your last frost date.