Blue lobelia

There are few blues more intense and gorgeous than those found on annual lobelia. The mounding type, called edging lobelia, is beautiful for planting in rows in the front of beds and borders. The cascading type is stunning, like a sapphire waterfall, spilling from window boxes or pots.

Annual lobelia is in its glory during the cool weather of spring and fall. Except for cool-summer areas, such as the Pacific Northwest or higher altitudes, lobelia stops flowering during the heat of summer. Shear the plant back when this happens, and it will likely rebloom come fall.

Light:

Sun,Part Sun,Shade

Zones:

2-11

Plant Type:

Annual

Plant Height:

To 1 foot tall

Plant Width:

To 1 foot wide

Landscape Uses:

Containers,Beds & Borders,Slopes,Groundcover

Special Features:

Flowers,Easy to Grow

Top Varieties

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'Blue Wings' lobelia

Lobelia tenuior 'Blue Wings' bears large blue flowers on a mounding plant perfect for hanging baskets. It grows 10 inches tall.
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'Lucia Dark Blue' lobelia

Lobelia erinus 'Lucia Dark Blue' offers gorgeous true-blue flowers on a trailing plant that's more heat tolerant than many older varieties. It trails to 24 inches.
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'Magadi Blue' lobelia

Lobelia erinus 'Magadi Blue' offers better heat tolerance than most lobelias. It offers soft-blue flowers and grows 10 inches tall.
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'Magadi Blue with White Eye' lobelia

Lobelia erinus 'Magadi Blue with White Eye' is a sister to 'Magadi Blue' and also has great heat tolerance. It offers soft-blue flowers marked with a white throat. It grows 10 inches tall.
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'Riveria' blue lobelia

Lobelia erinus 'Riviera Series' bears flowers in a wide range of blue shades (as well as lilac, rose, and white) on vigorous, mounding plants.
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'Riviera Midnight Blue' lobelia

Lobelia erinus 'Riviera Midnight Blue' bears dark blue flowers and bronze-tinged flowers on vigorous, mounding plants.
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'Riviera White' lobelia

Lobelia erinus 'Riviera White' bears pure-white flowers on vigorous, mounding plants.
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'Regatta Rose' lobelia

Lobelia erinus 'Regatta Rose' bears brilliant carmine-rose flowers with a white center on trailing plants.
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'Regatta Sapphire' blue lobelia

Lobelia erinus 'Regatta Sapphire' bears clear blue flowers with a white center on trailing plants.
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Garden Plans

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Colorful Front Yard Cottage Garden Plan
English Victorian Cottage Garden Plan

Plant It With

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Loosestrife

Mix blue lobelia with golden creeping Jenny for a bright, contrasting display to spill from a container or hanging basket.

Dianthus

Accent blue lobelia's beautiful flowers with brightly colored dianthus (and enjoy the scent from dianthus, too).

Pansy

Grow blue lobelia as an edging or skirt in containers with blue, purple, or white pansies for a classic combination.

Propagation

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Seed