Water Requirements for Carrots

Early Growth

• Moist soil is key to carrot seed germination; the seeds won't germinate in dry soil. Daily watering may be required for emergence, even if you are planting during a cool season. Carrots need even more water as they develop, and their water needs peak when they reach 7 to 10 inches tall. When seedlings are three weeks old and temperatures are between 70 and 100 degrees F, carrots need about 1/10 to 1/8 inch of water every day.

Later Growth

• Moisture demands rise sigificantly once carrots grow larger. According to the University of Minnesota, California carrot farms provide about 14 to 15 inches during the growing season, while Michigan farmers provide 10 to 14 inches. The growing season lasts 50 to 95 days. Carrots prefer to receive a uniform amount of water. In the highest heat at the peak of their growth, carrots may require as much as 1/4 inch of water per day.

Soil

• While moisture levels are essential to proper carrot formation and texture, soil conditions play a vital part in ensuring these conditions are met. Ideal soil is sandy loam, which offers a balance of water-holding capacity and reduced compaction. Raised beds and soil amendments can help ensure the soil is draining adequately. Consistent moisture while seeds are germinating prevents the development of soil crust, which could impede emergence.

Problems

• Even irrigation ensures carrots develop into a desired shape. Over-watering, on the other hand, may cause hairy roots and divided or forked carrot roots. Breaking up and irrigating the subsoil and deeper topsoil layers encourages even development when carrots reach that depth. Fluctuations in moisture levels can impede leaf development, create bitter roots and cause root cracking. Apply mulch around carrots to retain moisture and avert these problems.