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Growing Herbs

Herbs are tolerant of a wide range of growing conditions and they grow well with very little maintenance.

For healthy, flavoursome and fragrant herbs, we have divided the herbs into four categories with hints and tips for each group.

Soil Preparation and Aspect

Herbs prefer a light, well-drained, crumbly soil. Most will still grow in heavy soil, provided there is good drainage.

Before planting, dig the soil to a depth of about 25cm, remove all weeds and break up clods to bring the soil to a moderately fine texture.

If the soil lacks humus, place 5-10cm of organic matter on the surface and dig to a spade depth.

At the same time, apply animal manure, blood and bone, or a complete fertiliser. Agricultural lime or dolomite can also be beneficial if mixed in at the rate of 1/2 cup per square-metre.

If possible, prepare the soil several weeks before planting.

For best results plant herbs where they will receive sun all day. Some, such as parsley and mint, are tolerant of partial shade.

1. Vegetable Culture Herbs
Anise, basil, caraway, capsicums (sweet peppers and chillies), catnip, chervil, chicory, chives, cumin, coriander, dill, endive, fennel, garlic, horseradish, land cress, lovage, parsley, rocket, salad burnet, shallots.

Hints

High soil fertility: Use organic or complete fertilisers with high nitrogen content at rates recommended for vegetables.

Water well in summer.

2. Mediterranean Climate Herbs
Catmint, chamomile, curry bush (grey leaf), french tarragon, germander, hyssop, lavender, lemon verbena, marjoram, nasturtium, oregano, pineapple sage, pyrethrum, rosemary, rue, sage, santolina, savories, scented geraniums (pelargoniums), thyme, wormwood, yarrow.

Hints:

Low to moderate soil fertility: These plants thrive if mushroom compost is used as a soil conditioner or surface mulch.

Lime soils: As plants in this group are mainly natives of chalky (limey) soil, an annual application of lime or dolomite would be beneficial.

Extremely well-drained soil: If you have poorly drained clay soil, raise beds at least 20cm. Incorporating gypsum and compost will improve drainage.

Avoid overwatering.

3. Ample Summer Moisture Herbs
Angelica, baytree, bergamot, cardamon, comfrey, elderberry, five-in-one, heartsease, lemon balm, lemon grass, lovage, mints, sorrel, water cress.

Hints:

High soil fertility: Use organic or complete fertilisers with high nitrogen content at rates recommended for vegetables.

These herbs will not flourish if allowed to dry out, especially in summer. If regular watering is not possible, mix organic compost into the soil and also surface mulch to a depth of at least 5cm to help retain moisture. The soil should have reasonable drainage rather than being water logged.

Mints and water cress perform best in wet conditions.

4. Suit Most Conditions
Aloe vera, borage, feverfew, purple coneflower, tansy, winter tarragon.

Hints:

These herbs will grow well under any of the conditions outlined for the previous herb categories.

Sunlight

Most herbs taste best if grown in full sun. However, a strong characteristic flavour can be be had by exposure to as little as five hours sunshine per day.

Pruning

The lower stems of perennial herbs tend to become woody with age. Avoid this by pruning from a young age.

Frequent picking for use keeps the herb plant bushy and growing strongly. Never pick all the leaves off the plant. Leave some to sustain future growth.

Planning

If you are planning a herb garden, we suggest dividing up separate areas for groups 1, 2 and 3. This will make it easier to maintain and ensure that each herb gets the best conditions for healthy growth.

A variety of foliage types within each group will make improve the visual appearance of your garden.

Other Hints and Tips

Annual Herbs - With herbs that die off in winter, such as basil, it is a good idea to let a few plants go to see in autumn. You can collect the seeds and re-sow in spring.

Biennial Herbs - Herbs such as parsley are inclined to go to seed in their second year, so a new crop should be planted every year.

Mints - These can be very invasive so grow them in a separate area or container.

Location - As herbs are frequently used in cooking it is wise to grow them close to the kitchen.

Containers - Many herbs will grow well in containers, especially in a warm, sheltered location.

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