Unlike many of the Mediterranean herbs you can grow in the garden today, oregano -'Origanum vulgare' is perhaps the hardiest. So tough is its constitution that, after being introduced to Great Britain by the Romans, it became naturalised in the wild and has remained something of a ‘wild flower' ever since across large parts of the country.
Origanum vulgare has had to evolve to cope with whatever the weather here could throw at it. Gone are the hairy leaves – one of the modifications that plants use to help them cope in hot, dry climates – and gone too are their highly scented leaves. The leaves of the English form are now reduced in essential oils by comparison and are now what you would call ‘aromatic’.
Although still suitable for culinary use you will be better off with plants grown from seed that has been sourced from the Mediterranean region. Even so, when it comes to growing Mediterranean herbs here in the English garden, oregano is not only one of the easiest; it also has centuries of form.
To grow oregano from seed is relatively simple, however there can be a problem working with the seed as it is very fine and difficult to handle. In order to get an even distribution of the seed you may wish to try adding it to some fine, dry sand, mixing the seed in well and then sowing the whole mix to achieve an even distribution.
When sowing indoors, start about 6 weeks before the threat of late frosts are over. You may need to provide basal heat as oregano will need a roughly constant temperature of about 15 degrees Celsius. Once the newly germinated seedlings have started emerging through the compost, reduce their watering - again, to help prevent fungal infections. After another week or two, thin out the weakest seedlings allowing just one strong plant per plug. Then, once the seedlings have produced at least two sets of ‘true’ leaves they will be ready for transplanting. Pot them on into a free draining compost such as John Innes ‘Seed’ or use a good quality multi-purpose compost mixed 50:50 with perlite or horticultural grit. Once they have been grown on for 3-4 weeks, they can then be planted outside in their permanent position.
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