Giant Lobelia
Lobelia deckenii
Family: Campanulaceae
Giant Lobelia grows in full sun and prefers cool moist alpine soil. Water needs: High.
How to Grow Giant Lobelia
Giant Lobelia growing information includes sunlight requirements of Full sun, soil conditions listed as Cool moist alpine soil with a soil pH of 5.0-6.5, and High water needs. The listed hardiness zones are 9-11. For propagation reference, the database lists germination or establishment information for Giant Lobelia as 21-60 days, with planting or establishment depth listed as Surface sow. Days to maturity are listed as 3-5 years.
Plant Overview
Giant Lobelia (Lobelia deckenii) is listed in the Campanulaceae family and categorized as a rosette perennial with a perennial life cycle. This profile summarizes growing information for hardiness, light, soil, water, seed starting, maturity, and other available cultivation details. Difficulty is listed as Difficult.
- Plant ID
- PLT-3430
- Family
- Campanulaceae
- Plant type
- Rosette perennial
- Life cycle
- Perennial
- Difficulty
- Difficult
Growing Conditions
Giant Lobelia is listed for full sun conditions. Water needs are listed as high. The database soil reference is Cool moist alpine soil. The listed soil pH range is 5.0-6.5, and the listed hardiness range is 9-11.
- Hardiness zones
- 9-11
- Sunlight
- Full sun
- Soil
- Cool moist alpine soil
- Soil pH
- 5.0-6.5
- Water needs
- High
Seed & Germination
For seed starting, the listed germination time is 21-60 days and the seed depth is Surface sow. The listed time to maturity is 3-5 years. Use these values as general reference points and adjust for local climate, seed source, and growing conditions.
- Germination
- 21-60 days
- Seed depth
- Surface sow
Harvest & Propagation
- Days to maturity
- 3-5 years
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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.