Swiss chard is a green leafy vegetable that is generally not difficult to grow. In humid and wet conditions these plants can fall prey to certain fungal diseases such as Cercosa Leaf Spot or Downy mildew. The easiest treatment is prevention so leave plenty of space between plants to allow for air circulation and avoid over-watering. Swiss chard should only need irrigation during extended dry spells. Use a copper containing fungicide if needed. Insects can also be a nuisance with your Swiss chard. The most common are flea beetles, aphids and leafminer larvae. Treat against these pests with a insecticidal soap spray.
- Dwony mildew is a common issue for Swiss chards. It appears as a fuzzy grey on the leaves of the plant.
- The easiest way to distinguish trouble is when the outside leaves have a purple stem. This happens a lot in humid weather.
- Pests can also be a problem for the plant. Flea Beetles are a huge culprit and getting rid of them involves homemade spray and water.
“Fungal Swiss chard diseases are the most common culprits responsible when your plants fall ill in the garden.”