By our calculations, you should look at sowing Valiant about 21 days before your last frost date.
Cool-season crop. For early harvest, start indoors 6-8 weeks before planting outdoors. Or seed directly outdoors. Sow 2-3 seeds together every 2 feet. When seedlings are 1 inch tall, thin to one plant every 2 feet. Break off lower leaves when sprouts begin to form. 1
Ensure that temperatures are mild (minimum night temperatures should be around 7°C / 45°F) and all chance of frost has passed before planting out, as Valiant is a half hardy plant.Breeder and vendor: Sluis and Groot. 2
Valiant hybrid, Valiant F1
1 NK Lawn & Garden seed packet description.