Shrubby False Buttonweed

Spermacoce verticillata

Native to:
Argentina, Bahamas, Belize, Bolivia, Brazil, Colombia, Costa Rica, Cuba, Dominican Republic, El Salvador, French Guiana, Guatemala, Guyana, Haiti, Honduras, Jamaica, Leeward Is., Mexico, Nicaragua, Panamá, Paraguay, Peru, Puerto Rico, Southwest Caribbean, Suriname, Trinidad-Tobago, Uruguay, Venezuelan Antilles, Windward Is.

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Rubiaceae
Genus:
Spermacoce
Species:
Spermacoce verticillata
USDA Symbol:
SPVE2

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Subshrub
Height:
90 cm
Light Requirements:
Full Sun
Drought Tolerance:
Medium
Bloom Months:
jan,feb,mar,apr,may,jun,jul,aug,sep,oct,nov,dec
Bloom Colors:
white

Garden & Ecology Notes

Wildlife Value:
bees, butterflies
Deer Resistant:
Yes
Salt Tolerant:
Yes
Fire Ecology:
Fire adapted — tolerates or benefits from fire
Fire Notes:
Resprouts readily after fire and colonizes disturbed areas post-burn.

Soil Requirements

Soil Type:
sandy, well-drained, nutrient-poor soil
pH:
5.5 - 7.5 (slightly acidic to neutral)
Drainage:
excellent drainage required
Moisture:
dry to moderate
Notes:
thrives in disturbed areas and open fields

Propagation & Germination

Stratification:
None required
Germination Time:
14–30 days
Notes:
Seeds germinate readily in warm conditions without pretreatment.

The above propagation data sourced from Claude AI