Mid-March is generally the expected seeding date for cool season vegetables along the Front Range. These include lettuce, onions, peas, radishes, spinach and cabbage. Earlier sowing may be possible this year because soil temperatures already have warmed to 40 degrees F (check Fort Collins soil temperature website mentioned last post). Of course soil temperature can drop lower with extended cold and cloudy weather.
Small seeded vegetables such as lettuce can be a challenge to germinate in dry climates. If small seed is planted deep so it doesn't dry out, it won't germinate. Planting shallow and just barely covering with soil raises the danger of drying out which kills germinating seeds. The following technique can help you overcome the challenge of our low relative humidity and winds that dry the soil surface.