GROW: When you realise how long it takes to achieve a harvest of liquorice, the reason it is not more popular becomes clearer. Commercially, liquorice plants are not harvested until they are four or five years old. However, in the home garden it is possible to take a small harvest after three years – about the length of time it takes for your first harvest of asparagus.
But it you have the patience the rewards are worth it. Growing from seed isn’t especially difficult but germination can be erratic, so it’s worth sowing extra in case of failures. Sow seeds on the surface of potting compost in mid to late spring or early autumn. Don’t cover them. Keep them warm – about 20°C (68°F) – and with any luck, two or three weeks later your liquorice seedlings should have popped up.
HARVEST: You can harvest licorice root once your plant is 3 years old and it’s best done in the autumn after the growing season is complete. Dig up the plant with a sharp spade and remove some of the roots with clean scissors or secateurs. Dry the roots for a few months before using them
USE: Licorice root may have potent antioxidant, anti-inflammatory, and antimicrobial effects. Early research suggests that, as a result, it may ease upper respiratory infections, treat ulcers, and aid digestion, among other benefits.
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