July 9, 2025, 10:09 am | Read time: 3 minutes
Tomatoes from your own garden or balcony are becoming increasingly popular. However, caring for them can sometimes be quite complex. Even watering can be tricky, and mistakes can lead to a reduced harvest or even a sick plant. myHOMEBOOK editor Franka Kruse-Gering explains what to watch out for when watering tomatoes.
Homegrown tomatoes taste significantly better than store-bought ones, not least because of the pride involved. However, tomatoes are finicky if you make mistakes in their care. When planting tomatoes, besides choosing the right season and seeds, watering is crucial. Otherwise, the plants may wither. The following four mistakes are common when watering tomato plants.
1. Mistake – Tomato Plants Don’t Like a Shower When Watering
A typical mistake when watering tomato plants is to pour water directly onto the soil near the roots. The plants don’t like water from above. The reason is that they are very susceptible to fungi. Water on the leaves or stems can promote fungal and mold growth. For this reason, tomato plants don’t tolerate rain well either. It’s advisable to plant them in a sheltered spot.
2. Mistake – Finding the Perfect Balance
Tomatoes don’t like it too dry, nor do they like wet feet. This mistake should be avoided when watering tomato plants, and the right amount of water should always be ensured. The top layer of soil should be slightly dry and crumbly before the next watering. Water slowly and make sure enough water is given. The roots of tomato plants can dry out quickly.
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3. Mistake – Water Tomato Plants in the Morning Rather Than in the Evening
Watering tomato plants at the wrong time can also be an unforgivable mistake. Tomatoes should be watered in the morning or during the day. If watered in the evening, they remain damp overnight, which encourages mold or fungi. Watering during the day allows moisture to evaporate, reducing the risk.
4. Mistake – The water is Too Cold
Just like us, a cold bath is unpleasant for tomatoes. Cold water can shock the plants and cause stress. The roots may then be unable to absorb all necessary nutrients from the soil, leading to deficiencies. The consequences of this watering mistake include leaf loss or discoloration and impaired tomato harvest. It’s better to water tomatoes with lukewarm water.