Columbia Hawthorn (Crataegus columbiana)

Columbia Hawthorn

Crataegus columbiana

Thorny branches bear delicate white blooms and bright red fruits, blending ornamental and practical value. Deciduous small tree or shrub; common name: Pacific Hawthorn.

Full sun
1–2/week
Beginner
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Plant Needs

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Sunlight Full sun to partial shade; full sun promotes abundant flowering and fruiting, while partial shade is tolerated in hot climates
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Watering Water deeply when the top 5–7 cm of soil dries out; drought-tolerant once fully established
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Temperature Cold-hardy to -20°C; withstands harsh winter conditions and moderate summer heat
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Characteristics

  • Leaf: Oval to oblong leaves with serrated margins and shallow lobes, dark green above, paler beneath
  • Flower: Dense clusters of small white five-petaled flowers with yellow stamens
  • Fruit: Bright red, round pomes (hawthorns) ripening in late summer to autumn
  • Stem: Woody branches armed with sharp 2–3 cm long spines
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Care Guide

Watering

Water regularly during active growth to support flowering and fruiting

Fertilization

Apply balanced slow-release fertilizer once in early spring. Fertilizer supports healthy foliage and flower production

Eggshell powder top-dressing:Crush dried eggshells into fine powder and sprinkle lightly around the base of the plant; avoid direct contact with stems
Pruning
  • Remove dead, diseased, or crossing branches in late winter to improve airflow and reduce disease risk
  • Thin overcrowded stems after flowering to encourage better light penetration and fruit production
  • Trim back overly long branches to maintain a compact, desired shape in early spring
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA confirmed non-toxic; no known adverse effects

Humans: Non-toxic to humans; fruits are edible when ripe

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Garden Uses & Culture

Culture: N/A

Usage: Ornamental garden plant; ripe fruits used in jams, jellies, and herbal teas; thorny branches provide wildlife shelter