Herbs · Thai Basil
How to pick fresh Thai Basil
Purple stems, strong clove-anise scent, no flower spikes — that's the fresh bunch
How to pick
Purple stems are how you tell Thai basil from sweet basil — every bunch has them, so they identify the herb rather than rank one bunch against another, and how deep the purple runs depends on how much light the plant got. Judge freshness on the rest: leaves deep green and perky, stems firm and upright. Check the top of the bunch for flower spikes: any flowering means the plant has bolted and leaves will be smaller, tougher, and less fragrant. Smell should be strong clove-anise.
Red flags
- Tiny pinched leaves at the topmost tips — pre-flower bolting sign, distinct from picking.how's flower-spike check
- Yellowing leaves — chlorophyll breakdown, bunch past prime
- Limp or drooping stems — lost turgor
- Faint or no aroma
- Black spots on leaves — cold damage (do not refrigerate, same as sweet basil)
How to store
Do NOT refrigerate Thai basil — chilling below ~50 °F (~10 °C) causes black spots within hours. Stand in a glass of water on the counter, loose plastic bag over the top, change water daily. Thai basil is slightly more heat-tolerant than Genovese and keeps 4–5 days at room temperature.
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Picking, storage, and freshness guidance is drawn from peer-reviewed postharvest research and agricultural extension sources. The sources are named in the app.