Lobelia Species

Lobelia× speciosa

Family
Campanulaceae (kam-pan-yew-LAY-see-ee)
Genus
Lobelia (low-BEE-lee-a)
Synonym
Lobelia × formosa
Lobelia × gerardii
Lobelia × makoyi
Lobelia × milleri
Lobelia × nova
Sun Exposure
Full Sun
Sun to Partial Shade
Foliage
Herbaceous
Smooth
Height
24-36 in. (60-90 cm)
36-48 in. (90-120 cm)
Spacing
15-18 in. (38-45 cm)
Hardiness
USDA Zone 4b: to -31.6 °C (-25 °F)
USDA Zone 5a: to -28.8 °C (-20 °F)
USDA Zone 5b: to -26.1 °C (-15 °F)
USDA Zone 6a: to -23.3 °C (-10 °F)
USDA Zone 6b: to -20.5 °C (-5 °F)
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)
USDA Zone 9a: to -6.6 °C (20 °F)
Danger
All parts of plant are poisonous if ingested
Bloom Color
Medium Purple
Bloom Time
Mid Summer
Late Summer/Early Fall
Other Details
Category
Perennials
Water Requirements
Requires consistently moist soil; do not let dry out between waterings
Foliage Color
Where to Grow
Bloom Characteristics
Bloom Size
Other details
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
Non-patented
Propagation Methods
By dividing the rootball
From seed; winter sow in vented containers, coldframe or unheated greenhouse
From seed; direct sow after last frost
Seed Collecting
Allow seedheads to dry on plants; remove and collect seeds
Regional

Featured Videos

Gardener's Notes:

1
positive
0
neutral
0
negative
Sort By:
Sort By:
S
Palmyra, PA | June 2021 | positive

I live near Hershey, PA and planted one of these plants (Starship Blue) last Fall. It's growing leaves beautifully, about 14 inches tall...Read More

Featured
Eastern Tiger Swallowtail
(Papilio glaucus)
Magnolia Warbler
(Setophaga magnolia)
Featured
Eastern Tiger Swallowtail
(Papilio glaucus)
Magnolia Warbler
(Setophaga magnolia)