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How to Grow Angelica
Learn how to grow Angelica from seed to harvest in 180 days. Advanced difficulty. Complete nutrient guide, pH/EC requirements, and growing conditions for soil & container.
Backed by 15 peer-reviewed citations.
Temperature
Treat angelica as a cool-climate biennial rather than a warm herb. OMAFRA lists 5-19C as the optimal crop temperature range and soil above 10C at planting, while UNH lists 50-60F soil temperature and about 30 days to germination. The previous 15-25C growth range was too warm, so the structured range is corrected to 5-19C with a cool midpoint.
Humidity
No source provided a validated numeric air-relative-humidity target for angelica. The evidence consistently supports a moist root zone: UNH recommends rich, moist, well-drained loam, NC State lists moist to occasionally wet soils, and OMAFRA says irrigation is beneficial under normal Ontario conditions.
Light
Angelica tolerates full sun to part shade, with partial shade especially useful outside cool northern conditions. Seed germination is strongly light-linked: UNH advises barely covering seed, and seed-dormancy work shows light and pretreatments can be important for difficult lots.
Airflow
Air movement is a disease-management requirement rather than a yield target. OMAFRA notes that disease pressure can be reduced by proper site selection and good canopy air movement, and its harvest guidance also depends on drying roots and seeds promptly.
Nutrition
Angelica-specific hydroponic NPK ppm values were not found, so the current ppm schedule should not be presented as experimentally verified. Applied evidence supports fertile, organic-rich soil, soil-test-led P and K, and moderate nitrogen: OMAFRA cites European work around 120 kg N/ha, while a 2024 field trial used…
Propagation
Seed is the main propagation route, but angelica is not an easy direct-sow herb. UNH reports about 30 days to germination and recommends light exposure plus temperature fluctuation, while OMAFRA lists late-August field seeding with a four-week germination period.
Harvesting
Harvest depends on the plant part. Leaves and young stalks are used while tender, and OMAFRA supports repeated leaf harvests from the same planting.
Calendar
For temperate production, start greenhouse seed in late winter and transplant in May, or direct sow fresh seed in late summer where outdoor conditions provide dormancy-breaking cycles. OMAFRA lists late-August field seeding, a four-week germination period, May transplanting, and spring or fall division.
Environments
Angelica is best suited to outdoor cool-climate beds and controlled greenhouses. OMAFRA describes a freeze-tolerant crop with 5-19C optimal temperatures, while NC State places it in USDA zones 5a-8b and supports full sun to part shade.
System Compatibility
The strongest supported systems are soil beds, greenhouse substrate culture, and drip-irrigated deep containers. OMAFRA and UNH support moist, well-drained field culture, while greenhouse research found media effects important and sand-hydroponic culture feasible.
Growing Media
Use rich, moist, well-drained loam or organic soil as the default medium. OMAFRA lists pH 4.5-7.3 and moist, well-drained soils; UNH specifies rich, moist, well-drained loam.
Container Specs
Exact angelica container trial dimensions were not found, so the container specification is conservative. NC State and UNH describe a 90-210 cm tall plant with 60-120 cm spread and edible roots, and OMAFRA uses 30 cm in-row spacing with 60-90 cm between rows.
Training & Support
No trellis, cage, or pruning system is required for angelica. OMAFRA lists no special growth-habit requirements, and extension profiles describe an upright biennial rather than a climbing or lodging-prone crop.
Common Issues
The issue list was corrected toward angelica-specific evidence. OMAFRA reports aphids and two-spotted spider mites as observed pests and lists powdery mildew, downy mildew, Fusarium, and Rhizoctonia as potential disease concerns.