Aim to sow
0.0 inches (0.0 cm) deep and try to ensure a gap of at least
1.95 inches (5.0 cm).
By our calculations, you should look at sowing Lilac Fountains about 105 days before your last frost date.
Lilac Fountains is tender, so ensure you wait until all danger of frost has passed in your area before considering planting outside.