A 4-page factsheet covering the common fungal, nematode, viral and bacterial diseases that affect carrots, from the seedling stage through to post-harvest. Root and post-harvest diseases affect the marketability of carrots, while seedling and foliar diseases affect the yield. Disease cycles and control measures are presented including cultural controls. Growers should ensure that chemical use complies with the maximum residue limits (MRLs), both domestically and in export markets.