How to Manage Pests

Pests in Gardens and Landscapes

Identification and confirmation—Close planting

Carrots that have been planted too close together have symptoms that are also characteristic of overwatering, nematodes, hard soils, or root dieback (Pythium spp.).

Root knot nematode damage on carrot
Root knot nematode damage on carrot


Statewide IPM Program, Agriculture and Natural Resources, University of California
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