Gadenin日本語Get the appThe best cut of the year is just before flowering
Oregano builds oil in the leaf all through the run-up to flowering and reaches its peak as the buds swell but before any petals open. Once the flowers are properly out, the plant switches its energy to seed and the leaves below start to thin in flavor and toughen in texture. The window is roughly ten days wide and it is worth watching for.
You can pick sprigs any time you want them for cooking. But if you are cutting a batch to dry, or a batch that has to carry you through winter, wait for the buds and then take the whole plant at once. The difference between the pre-flowering cut and a random midsummer cut is obvious as soon as you smell them side by side.
| Stage of the plant | How to recognize it | Quality for drying |
|---|---|---|
| Young spring growth | Soft bright shoots, leaves widely spaced | Poor, high water content and mild flavor |
| Bud showing | Tight green clusters at the shoot tips | Best of the year, cut everything now |
| First flowers open | White or pink flowers on a few tips | Still very good, cut without delay |
| Full flower | Whole plant in bloom, bees working it | Noticeably weaker, leaves tougher |
| After flowering | Brown seed heads, bare lower stems | Poor, use fresh only |
Cut on a dry morning, not after rain
The oils sit in surface glands and are at their highest after the dew has dried and before the midday heat drives them off. Mid-morning on a clear day is the moment. Cutting wet foliage after rain gives you material that takes days longer to dry and is far more likely to go moldy or brown in the bundle.
Give the plant two or three dry days before you cut if you can. Foliage taken during a wet spell is full of water, dries limp and loses color, and the flavor is measurably weaker even from the same plant.
- Take the whole plant back by half to two thirds Use shears and cut across the whole clump in one pass. Leave four to six inches (10 to 15 cm) of leafy stem standing so it can reshoot. Picking sprig by sprig leaves an uneven plant that regrows patchily.
- Do not wash it Washing floods the surface oil glands and adds water you then have to drive off. If the plant is dusty, spray it clean two days before you plan to cut and let it dry on the plant.
- Shake it out before you bundle Turn each handful over and shake. Spiders, small caterpillars and the odd snail come out now rather than in your drying room.
- Get it hanging within the hour Cut stems left in a heap heat up in the middle and go black. Bundle and hang the same morning you cut.
In a warm climate a plant cut this hard in early summer will bud again and give a second cut of nearly the same quality before autumn. That second cut is worth planning for.
How to dry it without losing the scent
Oregano dries better than almost any other herb, and unlike most it is arguably stronger dried than fresh because the oils concentrate as the water leaves. What ruins it is heat and light. Dry it in the dark, in moving air, at ordinary room temperature, and it keeps its gray-green color and its punch.
Bundles of ten to fifteen stems, tied at the cut ends and hung upside down, take about one to two weeks. It is ready when a leaf crumbles cleanly between your fingers rather than folding. Any bending or leathery feel means moisture is still in there and it will go musty in the jar.
- Tie loose, small bundles Ten to fifteen stems per bundle, no thicker than your thumb at the tie. Fat bundles stay damp in the center and the inner stems go brown and moldy.
- Hang somewhere dark with air moving An airy cupboard, a shed with the door open, or a spare room with the curtain drawn. Sunlight bleaches the leaf and burns off the oils within days.
- Retighten the string after a few days Stems shrink as they dry and bundles drop out of slack ties. Check once mid-way and pull the string up.
- Strip the leaves only when fully dry Run your hand down the stem from the top and the leaves come off in a shower. Stripping while still soft crushes them and releases oil you wanted to keep.
Store whole leaves, crush at the last moment
Every time you break the leaf you open oil glands and start losing scent to the air. Store the leaves whole, in a sealed jar, in a dark cupboard, and rub them between your palms as you add them to the pan. Pre-ground oregano sitting in a clear jar on a sunny shelf is flat within three months.
Kept whole and dark, a jar holds good flavor for a year and is still usable for two. Label it with the year you cut it, because dried oregano all looks the same and the difference between last summer and the summer before is easy to lose track of.
| Method | How to do it | Keeps for | Best used in |
|---|---|---|---|
| Air dried, whole leaf | Bundle, hang in the dark, strip and jar | About a year | Everything, this is the standard |
| Frozen sprigs | Bag whole shoots and freeze without blanching | Six months | Sauces and stews where texture does not matter |
| In oil | Pack clean dry sprigs in oil, keep refrigerated | Two to three weeks refrigerated | Dressings, use it up quickly |
| Fresh in the fridge | Stems in a jar of water, bag over the top | About a week | Immediate cooking |
Check the jar a week after filling it. If any moisture has condensed on the inside of the glass, tip the lot back out and dry it further. That condensation is what turns a jar musty.
Picking through the rest of the season
Between the big cuts you can take what you need whenever you cook. Cut whole shoot tips rather than individual leaves: removing a tip makes the plant branch below the cut, so regular picking thickens the plant, while stripping single leaves leaves bare stems that never fill in.
Take no more than a third of the plant at any one picking outside the main cuts, and stop taking anything at all about a month before your first frost. Late picking pushes out soft growth that has no time to harden and is the usual reason a plant that looked fine in autumn is dead by spring.
Keep a record of each cut
Write down the date you saw the first flower buds, the date you made the big cut, and roughly how much dry weight you got from each plant. Bud timing shifts by a couple of weeks between a hot year and a cool one, and having two or three years of dates written down is the only reliable way to be ready with the shears at the right moment.
Note the drying time too, and where you hung it. If one batch took three weeks and went brown, that tells you the spot was too still or too damp, and next year you hang it somewhere else.