How does pruning affect tomato spacing needs?

Trimming the leaves on tomatoes can change the spacing requirements by regulating how densely the leaves grow. When we eliminate extra leaves, suckers, and other growth, we increase air circulation, allowing plants to be planted more closely together without fear of disease. From my experience, my tomato jungle wasn't pruned, and it developed blight despite having ample spacing. Trimming strategically creates holes for breezes to help dry the leaves and avoid fungus issues.

Pruning can increase the airflow benefit, so you can get tighter spacing. For indeterminate varieties, use a spacing of 18-24 inches (46-61 cm) with weekly sucker removal. Unpruned plants will require 30% more spacing, up to 36 inches (91 cm), and become very humid. That allows you to produce 25% more plants in the same area and hugely reduce disease pressure.

Implement these pruning strategies right away. Begin when plants are approximately 12 inches (30 cm) tall. Always use sterilized shears to prevent the transmission of diseases. Start with suckers and lower leaves first. Prune early in the day when the plant is dry, allowing incisions to heal. The best part is that, although this may seem like a longer process, this method will enable you to utilize space safely and effectively.

Post-pruning plant assessment and care. Water at the soil level; avoid watering foliage. Utilize small fans for increased airflow when using the greenhouse. Use soft ties to support heavy branches. These pruned tomatoes will reward you with healthier growth, higher yields, and more effective use of space throughout the growing season.

Read the full article: Tomato Plant Spacing: Expert Tips for Maximum Yield