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Is perilla leaf oil supply seasonal, and how do you manage year-round availability?

Yes — raw material is seasonal (summer harvest, July–September), but we maintain a year-round strategic stock plus early-harvest contracts to guarantee continuous supply.

Seasonality & Supply Management

PeriodActivity
July–SeptemberPeak harvest of fresh purple leaves; main production window
October–JuneProcessing of stocked raw material; strategic finished-oil stock covers demand
Off-season large ordersScheduled against carried stock; lead time may extend 1–2 weeks
  • We sign advance-purchase contracts with Dao-di farms (Heilongjiang Suihua, Inner Mongolia Chifeng, Gansu Dingxi) to secure fresh purple-leaf volume
  • Finished oil is stored in sealed aluminum drums under 15–25°C controlled conditions
  • For long-term buyers we recommend an annual stock plan to smooth out seasonal price and availability swings

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บทความนี้เผยแพร่เมื่อ 2026-09-07 และอัปเดตล่าสุดเมื่อ 2026-09-07 โดยจะมีการปรับปรุงเนื้อหาอย่างต่อเนื่อง

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Guilin Four Seasons Sunshine

Founded in 2006, Guilin Four Seasons Sunshine F&F Co., Ltd. is a natural plant extract manufacturer and OEM/ODM partner in Guilin, China, combining proprietary Living-Fragrance physical extraction with supercritical fluid extraction to deliver pure, traceable botanical ingredients to global food, flavor, fragrance and personal care brands.