More about growing vegetable seedlings in trays

By considering various factors and tailoring care to specific vegetable needs, you can produce healthy, robust seedlings ready for transplanting into the garden, writes Shane Brody.

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Vegetables are becoming increasingly expensive for households and there is growing demand for fresh produce.

Growing vegetable seedlings in trays is a popular method for market gardeners and farmers to get a head start on the growing season. This approach allows for better control over the seedlings' environment, improved germination rates, and healthier transplants. Success depends on several critical factors, including soil type, fertiliser needs, water requirements, and specific conditions for different vegetables.

Soil type is an important variable, and a well-balanced potting mix is essential for seedling growth. The mix should be:

• Well-draining to prevent waterlogged soil;

• Sterile to minimise disease risk;

• Rich in organic matter for nutrient supply;

• Light and fluffy for good aeration and root growth.

A typical mix might include 40% compost or well-rotted manure, 30% course sand, and 30% quite finely broken or crushed tree bark from non-resinous or nontoxic trees. Bagged potting or seedling soil purchased from nurseries may be the way to go as this may contain less or no weed seeds, and usually includes compounds such as vermiculite that aid drainage and moisture retention.