N=high; P=low; K=low
Directly sow seeds in ground, cannot be transplanted.
2 inch spacing in between plants and rows.
See below in pest control for lightweight rowcover recommendation.
Keep the bed damp until the plants are 3" high! This may mean that in hot weather you need to hand water twice a day.
When carrots are 3-5" high, weed the bed and thin plants to at least 2" spacing. Do not skip this step, the effort is well worth it.
If in previous years you have had nocturnal defoliation from southern armyworm larvae, place a very lightweight rowcover over the entire carrot bed and seal the edges against the dirt. This should prevent the moth from laying eggs and demolishing the crop.
Carrots will grow well at two-inch spacings, so 36 carrots can theoretically be grown in one square foot.
Lettuce