Scarlet Globemallow

Sphaeralcea coccinea

Native to:
Canada, Mexico, United States

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Malvaceae
Genus:
Sphaeralcea
Species:
Sphaeralcea coccinea
USDA Symbol:
SPCO

Growth Characteristics

Life Cycle:
Biennial | Perennial
Growth Habit:
Forb/herb , Subshrub
Height:
45 cm
Light Requirements:
Full Sun
Drought Tolerance:
High
Bloom Months:
may,jun,jul,aug,sep
Bloom Colors:
orange, red

Wildlife Benefits

Bees:
★☆☆☆☆ Documented bee visitation (GBIF)
Butterflies & Moths:
★☆☆☆☆ Documented Lepidoptera association (GBIF)
Caterpillars:
★☆☆☆☆ Recorded caterpillar host plant (HOSTS Database)

Keystone Species Ranking

Pollen Specialist Bee Keystone:
★★★★☆ Native pollen specialist bee species supported by this genus (NWF)

Host Plant for Caterpillars

Small Checkered Skipper (Pyrgus scriptura)

Garden & Ecology Notes

Wildlife Value:
bees, butterflies
Deer Resistant:
Yes
Fire Ecology:
Fire adapted — tolerates or benefits from fire
Fire Notes:
Resprouts from deep taproot following fire; common in fire-maintained prairie and rangeland ecosystems.

Soil Requirements

Soil Type:
sandy, well-drained, nutrient-poor soil
pH:
6.0 - 8.0 (neutral to slightly alkaline)
Drainage:
excellent drainage required
Moisture:
dry to moderate
Notes:
thrives in arid and semi-arid regions

Propagation & Germination

Stratification:
None required
Scarification:
Seed coat scarification required before sowing
Germination Time:
14–30 days
Notes:
Scarification of hard seed coat improves germination. Seeds may germinate erratically without treatment.

The above propagation data sourced from Claude AI

Pre-treatment: Seeds were plated on 1.5% agar in petri dishes and incubated in growth chambers using six temperature treatments intended to represent different seed sowing times and locations. Treatments included early-spring, winter and early-spring, mid-spring, winter and mid-spring, late-spring, winter and late-spring, each with and without scarification.

Establishment: The seeds were collected in a small lot, 2.3 pounds, hand collected into a paper bag. Additional research is needed to identify whether these results are representative of the entire species.

Source: npn.rngr.net

ORGHPS Germination Guide: Sow @ 20C. Germinates within 3 months. Requires scarification.

Source: Ontario Rock Garden & Hardy Plant Society