How Far Apart to Plant Tomatoes

Spacing tomatoes correctly is essential for healthy plants, good airflow, and high yields. Planting tomatoes too close together leads to poor growth, disease problems, and disappointing harvests, while correct spacing allows plants to develop strong roots, sturdy stems, and plenty of fruit.

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This guide explains exactly how far apart to plant tomatoes based on type, growing method, and space available.

Why Tomato Spacing Matters

Correct spacing helps to:

• Improve airflow and reduce disease risk
• Allow sunlight to reach all parts of the plant
• Reduce competition for water and nutrients
• Make watering, feeding, and harvesting easier
• Increase overall yields and fruit quality

Crowded tomatoes may look productive early on but usually underperform later.

Standard Tomato Spacing Guidelines

Cordon (Indeterminate) Tomatoes

Cordon tomatoes grow tall and are trained upward on canes or strings.

• Spacing: 45–60 cm (18–24 inches) apart
• Row spacing: 60–75 cm

This spacing gives enough room for airflow and access for pruning and feeding.

Bush (Determinate) Tomatoes

Bush tomatoes grow wider and don’t need training in the same way.

• Spacing: 60 cm (24 inches) apart
• Row spacing: 75 cm

Bush types need more horizontal space to spread without overcrowding.

Spacing Tomatoes by Growing Method

Outdoors (Beds and Borders)

• Cordon tomatoes: 45–60 cm apart
• Bush tomatoes: 60 cm apart

Outdoor plants need good spacing to reduce the risk of blight and other fungal diseases.

Raised Beds

• Use the same spacing as outdoors
• Avoid squeezing extra plants into the bed
• Good airflow is especially important in raised beds

Overcrowding raised beds often leads to higher humidity around plants.

Greenhouses and Polytunnels

• Cordon tomatoes: 45–60 cm apart
• Bush tomatoes: At least 60 cm apart

Under cover, airflow is critical, so never reduce spacing to fit more plants.

Grow Bags

• 2 plants per standard grow bag (around 40 litres)
• Space planting holes evenly across the bag

More than two plants per grow bag reduces yields and increases watering problems.

Containers

• One tomato plant per container
• Minimum pot size: 30 cm (12 inches)
• Larger pots allow better root development and easier watering

Crowding multiple plants into one pot rarely succeeds.

Hanging Baskets

• One trailing tomato plant per basket
• Minimum basket size: 30 cm

Trailing varieties need room to cascade and fruit properly.

What Happens If Tomatoes Are Planted Too Close Together?

Planting tomatoes too close can cause:

• Poor airflow and high humidity
• Increased risk of blight and mildew
• Weak, spindly growth
• Reduced flowering and fruiting
• Difficult access for care and harvesting

Plants compete rather than thrive.

Can You Plant Tomatoes Further Apart?

Yes, and in some cases it’s beneficial.

Wider spacing can:

• Improve airflow in damp or blight-prone areas
• Make watering and feeding easier
• Produce larger individual plants and fruit

The downside is using more space for fewer plants.

Spacing Tall, Leggy or Vigorous Varieties

Very vigorous or tall varieties benefit from:

• Spacing at the wider end of recommendations
• Extra airflow to manage dense growth
• Easier pruning and training

If unsure, leave more space rather than less.

Common Spacing Mistakes to Avoid

• Planting tomatoes at the same spacing as other vegetables
• Trying to squeeze in “just one more plant”
• Ignoring the difference between cordon and bush types
• Underestimating how large plants become mid-season

Good spacing always pays off later.

Quick Tomato Spacing Summary

• Cordon tomatoes: 45–60 cm apart
• Bush tomatoes: 60 cm apart
• Grow bags: 2 plants per bag
• Containers: 1 plant per pot
• Hanging baskets: 1 trailing plant per basket

Final Thoughts

Knowing how far apart to plant tomatoes makes a huge difference to plant health and harvest size. While it’s tempting to squeeze in extra plants, proper spacing improves airflow, reduces disease, and leads to stronger growth and better yields. Whether growing outdoors, under cover, or in containers, giving tomatoes the space they need is one of the simplest ways to guarantee success.