Carrot Diseases

Alternaria and Cercospora Blights can damage the foliage of carrots, reducing the size of the roots. Resistant varieties have strong tops that can weather blight damage but still produce a crop.
For more information, see Cornell’s Vegetable MD Online for a series of articles on carrot diseases, complete with photos. Click Here for Cornell’s list of disease-resistant carrots.

Other Carrot Issues

Forking can be caused by rocky or lumpy soil, poor drainage, insufficient water, or high nitrogen levels in the soil.

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'Greening' occurs when soil washes away around the tops of the roots, and the shoulders of the carrots turn green. If you see the tops of the carrots exposed, push some soil or mulch over the tops to prevent greening.
Splitting is caused by alternating dry and wet periods. For cool-season vegetables like carrots, maintain even soil moisture by mulching and steady, regular watering.

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Top of Page | Carrot Varieties | Soil Preparation | Planting
Watering | Fertilizing | Plant Care | Carrot Pests
Carrot Diseases | Companion Plants for Carrots
Carrots in Containers | Harvesting Carrots


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Companion Plants for Carrots

If you’re growing carrots where carrot rust flies are prevalent, plant aromatic herbs like basil or summer savory around the edges of the carrot patch.
Aromatic Herbs Like Summer Savory
Jam the Radar of Carrot Pests
© Steve Masley
(Click IMAGE to Enlarge)
Their volatile oils can help mask carrot odors that attract rust flies.

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Carrots are good companion plants for alliums like onions, shallots, and chives. Growing carrots around peas, lettuce, and tomatoes can enhance the growth and flavor of all associated plants—but avoid planting carrots in tomato beds that have high nitrogen levels.

Top of Page | Carrot Varieties | Soil Preparation | Planting
Watering | Fertilizing | Plant Care | Carrot Pests
Carrot Diseases | Companion Plants for Carrots
Carrots in Containers | Harvesting Carrots

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Carrot Varieties | Container Carrots | Harvesting Carrots
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