Palespike Lobelia

Lobelia spicata

Native to:
Canada, Prince Edward I., United States, Virgin Islands

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Campanulaceae
Genus:
Lobelia
Species:
Lobelia spicata
USDA Symbol:
LOSP

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Forb/herb
Height:
100 cm
Light Requirements:
Full Sun,Part Shade,Shade
Drought Tolerance:
Low
Bloom Months:
jun,jul,aug
Bloom Colors:
blue, violet

Wildlife Benefits

Bees:
★☆☆☆☆ Documented bee visitation (GBIF)
Butterflies & Moths:
★☆☆☆☆ Documented Lepidoptera association (GBIF)

Keystone Species Ranking

Caterpillar Keystone:
★☆☆☆☆ Butterfly & moth species supported by this genus (NWF)

Garden & Ecology Notes

Wildlife Value:
bees, butterflies

Soil Requirements

Soil Type:
sandy, well-drained, nutrient-poor soil
pH:
5.5 - 7.0 (slightly acidic to neutral)
Drainage:
excellent drainage required
Moisture:
dry to moderate
Notes:
prefers open, sunny habitats like prairies

Propagation & Germination

Stratification:
Cold/moist stratification required — 30–60 days
Germination Time:
14–30 days
Notes:
Seeds require cold stratification for 30-60 days; surface sow on moist medium and keep warm after stratification.

Pre-treatment: Cold-moist stratification for 30 days at 1–5°C (34–41°F).

Notes: Seeds require light for germination; do not cover.

Source: Claude AI

ORGHPS Germination Guide: Sow @ 20C. Germinates within 3 months. Requires light / surface sow (fine seed).

Source: Ontario Rock Garden & Hardy Plant Society

Where to Buy

Nationwide Seller