Road Kill Cactus (Consolea rubescens)

Road Kill Cactus

Consolea rubescens

Spiny, sprawling pads carry fiery red blooms—desert resilience meets vivid color. Succulent cactus shrub; common names: Road Kill Cactus, Red-flowered Prickly Pear.

Full sun
1–2/week
Beginner
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Plant Needs

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Sunlight Full sun exposure for optimal flowering and pad color; tolerates partial shade during extreme summer heat to prevent sunscald
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Watering Water deeply only when the entire soil profile is completely dry; avoid standing water to prevent root rot in this drought-tolerant species
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Temperature Thrives in warm, arid conditions; protect from frost below 10°C to prevent pad damage
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Characteristics

  • Leaf: Modified into sharp, yellowish spines (1–3 cm long) on oval, flattened fleshy pads (cladodes)
  • Flower: Bright red, cup-shaped blooms with prominent yellow stamens
  • Stem: Segmented, fleshy cladodes with reddish margins when exposed to drought or intense sun
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Care Guide

Watering

Water when the top 5–7 cm of soil is fully dry; increase frequency during prolonged heatwaves

Fertilization

Diluted cactus fertilizer applied once monthly. Discontinue fertilization in autumn and winter when growth slows

Crushed eggshell topdress:Sprinkle a thin layer of finely crushed, dried eggshells on the soil surface to boost calcium levels for healthy pad development; avoid mixing raw eggshells to prevent odor or pest issues
Pruning
  • Remove dead, damaged, or diseased cladodes to improve airflow and maintain plant shape
  • Trim overgrown segments in early spring to control the plant's sprawling growth habit
  • Clear fallen spines from the surrounding soil to reduce the risk of accidental injury
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: No systemic toxicity; spines may cause physical irritation if touched or ingested

Humans: Physical irritation from spines; mild oral irritation if pads are consumed without removing spines

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Garden Uses & Culture

Culture: N/A

Usage: Ornamental garden cactus; edible pads (nopales) can be harvested if spines are fully removed