The Waltham 29 is the variety of broccoli that Thomas Jefferson kept in his garden, and is grown in many areas today. The Waltham 29 grows best in zones three to ten. These seeds will grow and produce largely sized heads. 

Latin Name: brassica oleracea var italica
Other Names:
Days to Maturity: 85 days
Hardiness Zone: 3-10
Planting Depth: 1"
Plant Spacing: 3"
Row Spacing: 18-30"
Growth Habit: Bush
Soil Preference: Composted soil above six ph, temperature 60 to 65 degrees
Temp Preference: Warmer
Light Preference: Partial
Pests/diseases: Cabbage worms and aphids.
Color:Green with green/blue tops
Flavor: Mild with a crispy texture.