Tomato: One of the Most Popular and Versatile Crops for Every Edible Garden
Written by Claire Bickle
Growing tomatoes using a trench method is a simple and effective technique that enhances root development , improves water efficiency, and provides natural support for strong, productive plants.
Why choose a trench setup?
Growing tomatoes using a trench method has several key benefits:
- Improved root development: The trench allows roots to spread laterally, increasing access to water and nutrients.
- Efficient watering: Water is concentrated within the trench, reducing waste and maintaining consistent moisture.
- Greater stability: Plants are better anchored, lowering the risk of toppling in wind.
- Space efficiency: You can grow multiple tomato plants in a compact area. .
How to create a trench setup
Step 1: Choose the right location
Select a sunny spot that receives at least 6 to 8 hours of direct sunlight each day. Tomatoes thrive in full sun, so light exposure is essential for healthy growth and fruiting.
Step 2: Prepare the soil
Tomatoes are heavy feeders. Enrich your soil with Rocky Point ActivGrow Soil Improver Compost or Rocky Point Cow Manure. Aim for a slightly acidic pH between 6.0 and 6.8.
Step 3: Layout and dig the trench
Mark out your planting area. Dig a trench about 20-30cm deep and wide enough to fit the stems and roots. You can dig in a straight line or zigzag pattern, depending on your space. Loosen the soil at the bottom to aid drainage.
Step 4: Plant the tomatoes
Select strong, healthy seedlings. Remove the lower leaves to reduce the risk of rot . Lay the seedlings on their sides in the trench so that the stem is horizontal. This will encourage additional roots to form along the stem. Cover with soil, leaving just the top leaves exposed.
Step 5: Mulch the Area
Apply a generous layer of mulch. Low carbon mulches like sugar cane, lucerne or pea straw are ideal. Mulching helps to retain moisture, suppress weeds, and regulates soil temperature.
Step 6: Water and feed regularly
Maintain consistent moisture by watering deeply at the base however, avoid wetting the foliage to reduce the risk of disease. Fertilise every 2–3 weeks using a balanced fertiliser or an organic option like fish emulsion or ActivGrow Fertiliser pellets to support healthy growth and fruit production.
Harvesting your crop
Tomatoes are typically ready to harvest 60 to 85 days after transplanting seedlings into the garden, though this varies depending on the variety, climate, and growing conditions. Smaller cherry or grape varieties tend to mature faster (as early as 50 days), while larger beefsteak types may take longer.
Pick tomatoes when they are fully coloured, slightly soft to the touch, and have a glossy sheen. Ripe tomatoes should come off the vine easily with a gentle twist. Regular harvesting encourages the plant to produce more fruit throughout the season.
Why this method works
Trench planting is a proven method that works particularly well in areas with compact soil, poor drainage, or limited space. By planting tomato seedlings horizontally, more of the stem is buried, which leads to a stronger, more extensive root system.
This results in:
- Better nutrient and water uptake
- Increased plant stability
- Improved resilience in dry conditions.
It’s a water-efficient and beginner-friendly technique that promotes healthy growth and vigorous fruiting. Whether you are new to gardening or a seasoned grower, trench planting offers a simple and reliable way to achieve a productive, sustainable, and flavourful tomato harvest.
To learn even more about growing and cooking your own homegrown tomatoes click here for another Rocky Point blog.
To read more of Claires work head over to her website: Claire Bickle | Gardening for the Good Life!
