Mexican Zinnia (Zinnia haageana)

Mexican Zinnia

Zinnia haageana

Bright daisy-like blooms paint gardens in summer warmth. Compact annual flowering plant; common name: Mexican zinnia.

Full sun
1–2/week
Beginner
🌱

Plant Needs

☀️
Sunlight Full direct sunlight for 6–8 hours daily; tolerates light afternoon shade in hot climates to prevent bloom wilting
💧
Watering Water deeply when the top 2–3 cm of soil is completely dry; avoid overwatering to prevent root rot
🌡️
Temperature Thrives in warm temperatures; avoid frost, as it is frost-tender and will die at temperatures below 10°C
🔍

Characteristics

  • Leaf: Opposite, linear to lanceolate, rough-textured green leaves
  • Flower: Daisy-like composite blooms in red, orange, yellow, or pink; single or semi-double heads
  • Stem: Erect, hairy green stems branching near the base
🛠️

Care Guide

Watering

Keep soil consistently moist but not waterlogged; water early in the morning to reduce fungal disease risk

Fertilization

Apply diluted balanced liquid fertilizer every 2 weeks. Avoid over-fertilizing, as this can reduce bloom production and promote leggy growth

Banana peel liquid fertilizer:Chop 2–3 banana peels and soak in 1 liter of water for 3 days; dilute the mixture 1:10 with water before applying to soil; discard solid peels to avoid pest attraction
Pruning
  • Deadhead spent blooms regularly to encourage continuous flowering throughout the growing season
  • Pinch back the top 2–3 cm of young seedlings to promote bushier, more compact growth
  • Remove yellowing or damaged leaves to maintain plant health and improve airflow
⚠️

Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Non-toxic to cats; no adverse effects from ingestion or contact

Humans: No known toxicity to humans; safe for handling and consumption in small amounts

📖

Garden Uses & Culture

Culture: Symbolizes endurance and lasting affection in floral language

Usage: Ornamental garden plant; cut flower for fresh floral arrangements