| Giant Knotweed 50 |
| Giant Knotweed 98 |
| Trans-resveratrol 50% |
| Trans-resveratrol 98% |
| Conventional |
| Conventional |
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The roots of Giant knotweed selected from Sichuan and Shandong
Giant knotweed are important concentrated sources of resveratrol, most grow in the wild, mainly found in Shandong, Sichuan,Shaanxi and other places. Best harvesting seasons are spring and autumn. After the digging, remove fibrous roots, wash clean, chop into segments or thick slices when it is fresh, dry in the sun, and used raw or fresh.
