Cardinalis siphilitica
GREAT BLUE LOBELIA
SKU: 98-030
Description
Perennial blue lobelia has absolutely-stunning blue blooms held on tall spikes! Blooms are true-blue, and not a of violet. Plants are very cold hardy, especially compared to red lobelia varieties, and will return year after year reliably. Tolerant of many soil types including poor dry soils. Blooms appear in late summer and into fall, when few other plants are in bloom. Hummingbirds love them! We have had a very large clump of these for many years and we consider them one of our most valuable perennials!
Type: Hardy perennial
Height: 36-48"
Location: Part sun or shade
Hardiness zones: 4-9
Note: Ornamental use only. These seeds and/or plants are poisonous.
Germination: Start these seeds indoors right away for best germination rates. Your planting container should have holes in the bottom for excess water to drain. These seeds require light to germinate. Sow the seeds on surface of a sterile seed-start mix, and water in. Do not bury the seeds. Leave them at room temperature (20-22 °C, 68-72 °F) for 4 weeks. If they have not germinated after 4 weeks then a cooling period is required. Cover them with plastic and place in a fridge for 4 weeks. Be sure they stay moist. After the cold-moist stratification period they are then brought back to a cool room (15C, 59F) for them to germinate. Germination can be 30-60 days after the warming period, though some will take longer.
Description
Perennial blue lobelia has absolutely-stunning blue blooms held on tall spikes! Blooms are true-blue, and not a of violet. Plants are very cold hardy, especially compared to red lobelia varieties, and will return year after year reliably. Tolerant of many soil types including poor dry soils. Blooms appear in late summer and into fall, when few other plants are in bloom. Hummingbirds love them! We have had a very large clump of these for many years and we consider them one of our most valuable perennials!
Type: Hardy perennial
Height: 36-48"
Location: Part sun or shade
Hardiness zones: 4-9
Note: Ornamental use only. These seeds and/or plants are poisonous.
Germination: Start these seeds indoors right away for best germination rates. Your planting container should have holes in the bottom for excess water to drain. These seeds require light to germinate. Sow the seeds on surface of a sterile seed-start mix, and water in. Do not bury the seeds. Leave them at room temperature (20-22 °C, 68-72 °F) for 4 weeks. If they have not germinated after 4 weeks then a cooling period is required. Cover them with plastic and place in a fridge for 4 weeks. Be sure they stay moist. After the cold-moist stratification period they are then brought back to a cool room (15C, 59F) for them to germinate. Germination can be 30-60 days after the warming period, though some will take longer.
