Start indoors 10-12 weeks before last frost date. Harden off seedlings by reducing water, not temperature. Do not expose seedlings to temperatures under 55-degrees Fahrenheit.
Try to ensure a gap of at least 0.99 inches (2.54 cm) when sowing to prevent overcrowding your seedlings.By our calculations, you should look at sowing Red Venture about 91 days before your last frost date.