Just want to pass on a tip I received years ago to help grow carrots is a dry climate. First use a small stick or chopstick to poke 1/2 inch deep holes in soil at desired distance, the fill hole 1/2 way with vermiculite. Place carrot seed on top of the vermiculite and cover with more vermiculite. Then use mister or very fine rose to wet surrounding soil. The vermiculite will soak of water and keep moisture around the seed, giving the seed the opportunity to germinate. Check soil moisture daily, in the morning is best, and only water if it isn’t moist. I plant on a grid pattern of 16 carrots per square foot. You can use 2-3 seeds per spacing, but then you have to thin. It may seem like a load of fuss, but it goes faster than it sounds and no thinning needed, so it is efficient in the end. Mulch when plants are 2 inches tall. We get huge crops using this method.