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PlantFiles: Edging Lobelia, Annual Lobelia, Trailing Lobelia
Lobelia erinus 'Midnight Blue'

Family: Campanulaceae (kam-pan-yew-LAY-see-ee) (Info)
Genus: Lobelia (low-BEE-lee-a) (Info)
Species: erinus (EAR-rin-us) (Info)
Cultivar: Midnight Blue

3 members have or want this plant for trade.


under 6 in. (15 cm)

6-9 in. (15-22 cm)

Not Applicable

Sun Exposure:
Full Sun
Sun to Partial Shade
Light Shade
Full Shade

All parts of plant are poisonous if ingested

Bloom Color:
Dark Blue

Bloom Time:
Mid Summer
Late Summer/Early Fall
Mid Fall
Late Fall/Early Winter
Blooms repeatedly


Other details:
Average Water Needs; Water regularly; do not overwater

Soil pH requirements:
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)

Patent Information:

Propagation Methods:
From herbaceous stem cuttings
From seed; sow indoors before last frost
From seed; direct sow after last frost

Seed Collecting:
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed

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2 positives
No neutrals
No negatives

Gardeners' Notes:

Positive AmyInNH On Dec 19, 2011, AmyInNH from Brookline, NH wrote:

Outstanding color, deep intense indigo, I could stare at it for hours. I don't know why it says full sun. I live in the northeast and it can only take mild early sun past the end of May. Lasts most of the summer in a shady northern exposure.

Positive blukila On Dec 19, 2011, blukila from Kamuela, HI wrote:

I sow my Lobelia seeds in a 18" or so long pot with holes for drainage. It reseeds its self. When the little ones are 2" or so tall I cut out the straggly old ones to give more light to the young ones. They do seed themselves truly.


This plant has been said to grow in the following regions:

Albany, California
Citrus Heights, California
Lemon Grove, California
Monrovia, California
San Francisco, California
Kamuela, Hawaii
Brookline, New Hampshire
Frisco, Texas
Orange, Texas

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