SafePlants

Crataegus viridis: Green Hawthorn, A Regal Tree

The Crataegus viridis, commonly known as green hawthorn or southern hawthorn, offers year-round visual appeal, from its spring flowers to its vibrant fall foliage and persistent winter fruit. The 'Winter King' cultivar is particularly noted for its ornamental value.

Considerations for Pets

• The text mentions the presence of thorns in related species of hawthorns, and toothed leaves, although it specifically mentions that some "thornless hawthorns" are available. The thorns and toothed leaves may present a physical hazard.

Taxonomy and Nomenclature

• Scientific Name: Crataegus viridis
• Common Names: Green Hawthorn, Southern Hawthorn
• Family: Rosaceae
• In 1753, Linnaeus assigned the Latin name viridis (meaning green) to this species.
• Cultivar 'Winter King' is a popular variety.

Distribution and Habitat

• Crataegus viridis is native to North America.
• It grows in the eastern two-thirds of the United States, thriving in diverse soils and rainfall conditions.

Morphology and Growth Habits

• Green hawthorn can grow into a large shrub reaching up to thirty feet tall.
• Leaves are deciduous, simple, and arranged alternately. They are ovate in shape, up to 3.5 inches long, and have lobed, serrated margins. The leaves are glossy green and turn red to purplish-red in the fall.
• In mid-May, clusters of white flowers appear.
• The tree produces abundant orange-red fruit that provides winter interest.

Ecological Role

• Green hawthorn is described as an adaptable, urban-tolerant tree.
• The text mentions that there are over thirty species of hawthorns in the United States.

Interactions with Other Organisms

• The Hawthorn Shield Bug is mentioned as a common shield bug species. This bug is described as a handsome green and red invertebrate.

Further Information

• USDA hardiness zones: 4 through 7