Sow: March onwards, every 3 to 4 weeks up till late May. Try sowing beside spring onions to deter carrot fly.
Aspect: damp, well-drained soil. Too uhc organic matter and/or stones can cause 'forking' of roots.
Care: Thin if over-crowded - in the evening to reduce risk of attracting carrot fly.
Water: Only in very dry spells, then drench every 2 weeks.
Pest control: Carrot fly - (1) sow early or late in season, (2) try barrier methods - carrot fly does not fly higher than 12" from ground, or (3) try planting spring onions alongside.
Harvest: When large enough.
Don't grow by: Parsnips, radishes or dill.