By our calculations, you should look at sowing Tonda di piacenza about 42 days before your last frost date.
By our calculations, you should look at planting out Tonda di piacenza about 14 days after your last frost date.
Tondo di Piacenza means Round from Piacenza, a town in Northen Italy.
Tondo di piacenza, Tonda de piacenza, Gem squash