Great Blue Lobelia

Botanical Name

Lobelia siphilitica

Min Zone

Max Zone

Height

2 to 3 feet

Width

12 to 18 inches

Flowers

July to September: raceme of 2-lipped light to dark blue held atop sturdy stems

Light

Full sun to part shade

Soil

Moist to wet

Planting & Care

Needs constant, consistent moisture
Benefits from part shade in hot climates
Divide in spring
May self seed in optimum conditions
Excellent for naturalizing along streams, banks, swamps and low wooded areas

Problems

None serious

Varieties

Alba - white flowers

Upcoming Appearances

Oct. 23, 2021
San Diego Fall Home & Garden Show
Del Mar, CA

Oct. 27, 2021
Pruning Tips for Shrubs
Webinar

Nov. 13, 2021
Holiday Specialties at Ebert's
Ixonia, WI

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