How to Use Oven to Dry Herbs

Drying herbs in the oven is one of the quickest ways to preserve a bumper harvest from your garden or extend the life of fresh herbs from the supermarket. Done correctly, oven-dried herbs retain excellent flavour and colour. Here's exactly how to do it.

Why Dry Herbs in the Oven?

While air-drying is the most traditional method, it takes 1–3 weeks and requires the right conditions (warm, dry, good airflow). The oven dries herbs in 1–3 hours, making it ideal when you have a large quantity to process quickly or when the weather is too humid for air-drying.

Which Herbs Work Best for Oven Drying

Best results:

Rosemary, thyme, oregano, sage, bay leaves — robust, woody herbs with low moisture content dry beautifully in the oven
Mint, lemon balm, lemon verbena
Marjoram, tarragon, savoury

Less suitable (better air-dried or used fresh):

Basil — very delicate, loses colour and flavour quickly at heat
Chives — high moisture content, better frozen than dried
Parsley — can be oven-dried but loses some flavour; freeze for better results

Step-by-Step: How to Dry Herbs in the Oven

Wash and dry herbs thoroughly — rinse under cold water and pat completely dry with kitchen paper. Any remaining moisture will steam the herbs rather than dry them.
Remove thick stems — strip leaves from woody stems for faster, more even drying. Small sprigs can be left intact.
Spread in a single layer on a baking tray lined with baking paper, or on a wire rack over a tray. Do not overlap.
Set oven to its lowest temperature — ideally 40–50°C (105–120°F). If your oven's minimum is higher, prop the door open slightly with a wooden spoon.
Use fan mode if available — the circulating air speeds up drying and produces more even results.
Dry for 1–3 hours, checking every 30 minutes. Thin-leafed herbs like thyme may be done in 1 hour; thicker herbs like sage may take 2–3 hours.
Check for dryness: Herbs are ready when they crumble easily between your fingers and feel completely dry with no flexibility.
Cool completely before storing — storing warm herbs traps condensation and causes mould.

Storage

Store dried herbs in airtight glass jars away from direct light and heat. Properly dried and stored herbs retain good flavour for 6–12 months. The Mason Jars 24 Pack with Regular Lids (4oz, 8oz, 12oz) are ideal for herb storage — airtight, stackable, and available in small sizes perfect for individual herb varieties.

For Large Quantities: Hanging Rack

If you regularly dry large quantities of herbs, a hanging mesh drying rack is more efficient than the oven for air-drying. The Desy & Feeci Herb Drying Rack (8 Layer, 2ft Diameter) holds multiple herb varieties simultaneously and folds flat for storage — ideal for gardeners with a regular harvest to process.

Tips for Best Results

Harvest herbs in the morning after dew has dried but before the heat of the day — this is when essential oil content is highest
Don't rush with high heat — above 50°C, volatile aromatic oils evaporate and flavour is lost
Label jars with the herb name and drying date
Crumble dried herbs just before use to release maximum flavour

Summary

Set your oven to its lowest temperature (40–50°C / 105–120°F), spread herbs in a single layer on a tray, use fan mode, and dry for 1–3 hours. Cool completely before storing in airtight jars. Robust herbs like rosemary, thyme, and oregano give the best results.

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