Redroot Amaranth

Amaranthus retroflexus

Native to:
Mexico, United States

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Amaranthaceae
Genus:
Amaranthus
Species:
Amaranthus retroflexus
USDA Symbol:
AMRE

Growth Characteristics

Life Cycle:
Annual
Growth Habit:
Forb/herb
Height:
200 cm
Light Requirements:
Full Sun
Drought Tolerance:
High
Bloom Months:
jun,jul,aug,sep,oct
Bloom Colors:
green

Wildlife Benefits

Caterpillars:
★★☆☆☆ Recorded caterpillar host plant (HOSTS Database)

Host Plant for Caterpillars

beet armyworm (Spodoptera exigua), Bidens borer (Epiblema otiosana), Coleophora lineapulvella, Platynota nigrocervina, Scythris trivinctella, stalk borer moth (Papaipema nebris), Yellow-striped armyworm (Spodoptera ornithogalli)

Garden & Ecology Notes

Wildlife Value:
birds, small mammals

Soil Requirements

Soil Type:
rich, well-drained loamy soil
pH:
6.0 - 7.5 (slightly acidic to neutral)
Drainage:
excellent drainage required
Moisture:
dry to moderate
Notes:
thrives in disturbed soils

Propagation & Germination

Stratification:
None required
Germination Time:
3–14 days
Notes:
Requires light for germination. Seeds remain viable in soil for many years forming persistent seedbank.

The above propagation data sourced from Claude AI