Red Top Milan needs a soil ph of 6.5 to 7.0 (weakly acidic soil - neutral soil).
Growing Red Top Milan from seed
Aim to sow 0.47 inches (1.2 cm) deep and try to ensure a gap of at least 0.98 inches (2.5 cm). For optimal germination, soil temperature should be a minimum of 4°C / 39°F.
By our calculations, you should look at sowing Red Top Milan about 35 days before your last frost date.