Search Fact Sheets Virginia Tech Dendrology

oneseed hawthorn Rosaceae Crataegus monogyna Jacq. Listen to the Latin Print a QR link to this factsheet symbol: CRMO3
Leaf: Alternate, simple, 1 to 2 inches long, obovate, serrate and deeply lobed, subtending long thorns, dark green above and paler below.
Flower: Perfect, small white flowers 1/4 to 1/2 inch, with 5 petals produced in clusters near the end of the twig, appearing in mid to late spring.
Fruit: Small dark red pomes, 1/4 to 1/2 inch in diameter; maturing in the early fall.
Twig: Slender, gray; buds dark, shiny red and round; bearing obvious, stiff, 1 inch long thorns; leaf scars contain 3 bundle scars.
Bark: Smooth and red-brown when young, later turning gray and scaly.
Form: Erect, spreading deciduous shrub or small tree 15-40’ tall.
 Looks like: oceanspray - Oregon crabapple

oneseed hawthorn leaf image
oneseed hawthorn flower image
oneseed hawthorn fruit image
oneseed hawthorn twig image
oneseed hawthorn bark image
oneseed hawthorn form image
oneseed hawthorn map image

Additional Range Information: Crataegus monogyna is planted in the USDA hardiness zones shown above and may seed into the landscape. Download the full-size PDF map.
External Links: USDA Plants Database
All material 2025 Virginia Tech Dept. of Forest Resources and Environmental Conservation; Photos and text by: John Seiler, Edward Jensen, Alex Niemiera, and John Peterson; Silvics reprinted from Ag Handbook 654; range map source information