Poison Hemlock
Conium maculatum
Family: Apiaceae
Poison Hemlock grows in full sun to partial shade and prefers moist disturbed soil. Water needs: Moderate.
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How to Grow Poison Hemlock
Poison Hemlock growing information includes sunlight requirements of Full sun to partial shade, soil conditions listed as Moist disturbed soil with a soil pH of 5.5-7.5, and Moderate water needs. The listed hardiness zones are 3-10. For propagation reference, the database lists germination or establishment information for Poison Hemlock as 14-30 days, with planting or establishment depth listed as 1/4 inch. Days to maturity are listed as 120-180 days.
Plant Overview
Poison Hemlock (Conium maculatum) is listed in the Apiaceae family and categorized as a herb with a biennial life cycle. This profile summarizes growing information for hardiness, light, soil, water, seed starting, maturity, and other available cultivation details. Difficulty is listed as Easy.
- Plant ID
- PLT-3756
- Family
- Apiaceae
- Plant type
- Herb
- Life cycle
- Biennial
- Difficulty
- Easy
Growing Conditions
Poison Hemlock is listed for full sun to partial shade conditions. Water needs are listed as moderate. The database soil reference is Moist disturbed soil. The listed soil pH range is 5.5-7.5, and the listed hardiness range is 3-10.
- Hardiness zones
- 3-10
- Sunlight
- Full sun to partial shade
- Soil
- Moist disturbed soil
- Soil pH
- 5.5-7.5
- Water needs
- Moderate
Seed & Germination
For seed starting, the listed germination time is 14-30 days and the seed depth is 1/4 inch. The listed time to maturity is 120-180 days. Use these values as general reference points and adjust for local climate, seed source, and growing conditions.
- Germination
- 14-30 days
- Seed depth
- 1/4 inch
Harvest & Propagation
- Days to maturity
- 120-180 days
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Growing Reference Note
Plant performance can vary with climate, soil, weather, cultivar, seed quality, and gardening methods. The values on this page are general database reference ranges rather than a substitute for local extension guidance or seed-packet instructions.