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Lobelia spicata Lam.
Palespike lobelia, Pale-spike lobelia
USDA Symbol: LOSP
USDA Native Status: L48 (N), CAN (N)
A single, slender stem rises 1-2 ft. from pale-spike lobelia’s small rosette of basal foliage. The stem bears a delicate spike of pale-blue, two-lipped flowers. Small, bilaterally symmetrical, lavender to purplish-blue to bluish-white flowers in an elongated, slender, spike-like cluster; stem leafy, often reddish and hairy at base, smooth above. Pale-spike lobelia is a perennial.
This is a highly variable species with several varieties recognized by botanists.
Plant CharacteristicsDuration: Perennial Habit: Herb Flower:
Fruit: Size Class:
Bloom InformationBloom Color: White , Blue , Purple
Bloom Time: Jun , Jul
, WV Canada: MB
, SK Native Distribution:
S.e. Canada to Sask. & n.e. MT,
s. to GA, AL, MS, LA
& e. TX Native Habitat:
Prairies; open woodlands
Growing ConditionsLight Requirement: Sun , Part Shade , Shade
Soil Moisture: Dry , Moist
Soil Description: Moist to dry soils.
Conditions Comments: Not Available
The leaves, seeds, and roots of some plants of the Lobelia genus
contain poisonous substances and have caused fatalities in humans and animals when ingested. All plants in the genus
may contain toxins and should not be ingested. POISONOUS PARTS: All parts. Toxic only if eaten in large quantities. Symptoms include nausea, vomiting, diarrhea, salivation, exhaustion and weakness, dilation of pupils, convulsions, and coma. Toxic Principle: Alkaloids lobelamine, lobeline, and others, plus a volatile oil. (Poisonous Plants of N.C.) Conspicuous Flowers:
PropagationDescription: Scratch seeds lightly onto the soil surface. Use fresh or stratified seed.
Seed Collection: Not Available
Seed Treatment: Moist stratify for 2 months at 40 degrees.
Commercially Avail: yes
National Wetland Indicator Status
This information is derived from the U.S. Army Corps of Engineers National Wetland Plant List, Version 3.1
(Lichvar, R.W. 2013. The National Wetland Plant List: 2013 wetland ratings. Phytoneuron 2013-49: 1-241). Click here
for map of regions.
From the National Organizations Directory
According to the species list provided by Affiliate Organizations, this plant is either on display or available from the following:
- Picayune, MS
Record Last Modified: 2012-07-06
Research By: TWC Staff