Immortelle (Xeranthemum inapertum)

Immortelle

Xeranthemum inapertum

Its papery blooms hold color forever, a dried garden treasure. Herbaceous annual; common names: immortelle, everlasting flower.

Full sun
1/week
Beginner
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Plant Needs

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Sunlight Requires full sun exposure for optimal blooming; tolerates hot, arid conditions without scorching
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Watering Allow soil to dry completely between waterings; avoid overwatering to prevent root rot
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Temperature Thrives in warm, dry climates; tolerates light frosts but prefers temperatures above 10°C
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Characteristics

  • Leaf: Narrow, linear gray-green leaves covered in fine downy hairs to reduce water loss
  • Flower: Papery daisy-like composite blooms in white, pink, or purple; bracts retain color when dried
  • Stem: Slender, branching fuzzy green stems that support clustered flower heads
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Care Guide

Watering

Water deeply once weekly when top 5 cm of soil is dry; reduce frequency during extreme heat if foliage wilts

Fertilization

Diluted balanced liquid feed once monthly. Use low-nitrogen feed to promote flower production rather than foliage growth

Composted coffee grounds tea:Use fully composted grounds diluted 1:30 with water for root drenching; avoid applying raw grounds to prevent soil acidity spikes
Pruning
  • Deadhead spent blooms regularly to encourage continuous flowering throughout summer
  • Trim back leggy stems in mid-summer to maintain a compact, bushy growth habit
  • Cut stems for drying when blooms are fully open but not yet faded to preserve color
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: No listed toxicity to cats

Humans: No known toxic effects on humans

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Garden Uses & Culture

Culture: Symbolizes remembrance and enduring love due to its long-lasting dried blooms

Usage: Ornamental dried flower for wreaths, bouquets, and preserved floral arrangements