How to identify and prevent tomato late blight

Difficulty: Medium30–120 min3 tools💬 0

✓ Checked against manufacturer instructions and current safety standards · updated 8.7.2026.

What you'll need

Tools

  • Gardening glovesFor a safe inspection and basic task.
  • Hand trowel and rakeFor a safe inspection and basic task.
  • Bucket or sprayerFor a safe inspection and basic task.
Estimated cost0–60 KM for basic task
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1 Prepare for safe work

Check the weather conditions, installations, and terrain, put on gloves and eye protection, and keep children and pets away from tools and products.

⚠ Warning: Use the product only for the purpose and dosage specified on the label. Do not use electrical tools in the rain, and properly identify diseased plants and unknown pests first.

2 Determine the condition and cause

Look for watery dark spots that spread rapidly on leaves and stems, especially after cold and wet weather.

3 Perform the key check

Water at the soil level in the morning, increase spacing and airflow, remove lower leaves, and do not work with wet plants.

4 Do the repair or maintenance

Remove infected parts from the garden immediately. Use preventive products only according to registration, label, and withholding period.

? Tip: Photograph the initial state and change only one thing at a time. This makes it easier to determine what really solved the problem.

5 Test the result

Upon completion, water or test only as much as the procedure requires, clean the tools, and monitor the plant or system in the following days. Do not repeat the treatment before the recommended period.