The most spread cucumber diseases
Angular leafspot is a bacteria disease which quickly spreads through rain or water. It leaves dead spots on leaves. The best way to prevent this disease is to keep the foliage dry. Soaker hoses work great to for this purpose.
Downy mildew is a fungal disease. On a sick plant you will see yellow spots on leaves that eventually turn gray. Disease resistant varieties usually do not suffer from this problem. But you may practice cleanliness in the garden by removing garden waste and trying to keep the foliage as dry and possible.
Mosaic virus causes deformation of the cucumber plants, with small leaves and underdeveloped plants. Discoloration and spotting on the leaves may also be the signs of the disease. This disease is spread by aphids so control these pests. Infected plants should be removed and destroyed. The fruits from infected plants should also be destroyed.
Powdery mildew is also a fungal disease which is spread by spores carried by the wind. Leaves may begin to drop off, if the disease spreads. Note, that there are varieties resistant to this disease. Make sure to keep your garden free of waste and to destroy all infected plant parts.
Sudden wilt
This disease is caused by pythium fungus destroy the whole plant. This disease is strengthened by poor draining soil, so do not forgot to add organic compost to the soil before planting. Growing your cucumbers in containers and raised beds can also help to solve this problem.