Both tomatoes and cucumbers are heavy feeders, requiring high levels of nutrients like nitrogen, potassium, and phosphorus. When planted together, they compete for these essentials, which can stunt growth and reduce yields.
2. Susceptibility to Similar Pests and Diseases
Tomatoes and cucumbers are both vulnerable to diseases such as powdery mildew, downy mildew, and blight. Planting them close together can allow diseases to spread quickly through your garden.
3. Different Growth Habits
Tomatoes grow upright and benefit from staking, while cucumbers sprawl along the ground or climb trellises. Planting them together can result in tangled plants, reduced air circulation, and increased humidity—conditions that encourage fungal infections.
4. Watering Conflicts
