About This Plant
Hawthorns are a large genus of Small trees or coarse shrubs in the rose family (rosaceae) in the northern temperate zone. With frequent hybridization and their method of reproduction in the wild, they can be difficult to tell apart from eachother. Often hawthorns are shrubby but can grow up to 39ft high with a 1ft trunk diameter. Over 100 species are native to North America and about 30 to Canada; mostly occurring from southern Ontario eastward. They have Low, wide spreading canopies often with a crooked trunk or multi-stemmed habit.
Their habitat consists of forest openings, abandoned areas, along streams, and especially in calcium rich soils. Hawthorns are tolerant and adaptable trees tolerating chalky or clay soils, drought, or over moist areas. Ideally however, they prefer well drained loam that retains moisture. Pollution resistance and attractive features makes it a choice tree to plant in cities or industrial areas.
Branches have thorns, which are typically smooth and very sharp. Leaves are often lobed and or have sharply serrated margins; young leaves are edible. Buds are round, shinny, and reddish-brown. The bark is smooth and gray when young, becoming darker brown, and ridged/fissured with age.
Showy, usually white (occasionally pink), flat topped clusters of flowers appear in April to May signaling the beginning of summer. 5 petaled flowers are an identifying feature of hawthorns. Small apple-like fruit with thin flesh develop and often persist into winter. These are pomes in type and are often called haws. Their colour is usually red, but can be yellow, orange, blue, or near black. The fruit is an important food source for wildlife, and are dispersed by mammals and birds. They are also edible by humans and can be used to make jams and jellies.
Hawthorns have been in North America for a very long time, dating back to the cretaceous period, 140 to 170 million years ago. The hard, heavy, and durable wood can be used for tools, fence posts, and is suitable for carving or turnery. Hawthorns around the world have been associated with a lot of folklore, legends and tales, from stakes used to kill vampires, to fairies and gateways to other worlds.
Medicinally, the flowers, leaves, and berries are widely used in herbal medicine to support cardiovascular health, improve circulation, and strengthen heart function. It's been used to lower blood pressure by dilating coronary arteries, or as a diuretic to treat congestive heart failure. Because of its gentle and nourishing effects, hawthorn is often used as a long-term tonic for the heart and circulatory system.
References
Encyclopaedia Britannica. (n.d.). Hawthorn. Retrieved from https://www.britannica.com/plant/hawthorn
Farrar, J.L. (2018). Trees in Canada. Ottawa, ON: Natural Resources Canada.
Tree Atas - Ontario. (2020). Hawthorns. Retrieved from https://www.ontario.ca/page/hawthorns
Yale University. (2020). Hawthorn. Retrieved from https://naturewalk.yale.edu/trees/rosaceae/cratageus/hawthorn-48
Traditional Use
Folk Use
Hawthorn has been valued in European and Asian herbal traditions for centuries, particularly as a remedy for heart and circulatory health. The berries, leaves, and flowers are used to strengthen the heart, improve circulation, and support healthy blood pressure. Herbalists often prepare teas, tinctures, and syrups from the plant to address palpitations, mild heart weakness, and age-related cardiovascular concerns. Hawthorn is also known for its gentle calming effect on the nervous system, making it useful when emotional stress contributes to heart symptoms. The berries have been eaten fresh or dried as a nutritious tonic rich in antioxidants. In folk medicine, hawthorn was sometimes used for digestive discomfort and as a mild astringent. Because of its gradual and restorative effects, hawthorn has long been regarded as a nourishing herb for long-term heart health.
Chinese Medicine
In traditional Chinese medicine, hawthorn fruit—particularly from Crataegus pinnatifida—is known as shan zha. It is primarily used to support digestion and regulate blood circulation. The fruit is considered slightly warm and sour, helping to reduce food stagnation, especially after eating heavy or fatty meals. Hawthorn is commonly prescribed to improve digestion, relieve bloating, and move stagnant blood. In addition to digestive uses, modern TCM applications recognize hawthorn's supportive effects on cardiovascular health, including improving circulation and supporting healthy blood lipid levels. Hawthorn fruit is often used in teas, powders, or decoctions and is commonly combined with other herbs to harmonize digestion and promote healthy circulation. Its ability to both move blood and support the heart makes it an important herb in both traditional and modern herbal practice.
Special Chemistry
Hawthorn contains flavonoids, oligomeric procyanidins, triterpenic acids, and phenolic compounds that contribute to its antioxidant, cardiotonic, and circulation-supporting effects.
Signature
The thorny branches protecting clusters of nourishing berries reflect the plant's traditional role in protecting and strengthening the heart.
Combinations
Hawthorn combines well with motherwort, linden, garlic, rose, and lemon balm in herbal formulas supporting heart health and circulation.
Precautions
Generally considered safe when used appropriately. Because hawthorn affects the cardiovascular system, individuals taking heart medications should consult a healthcare professional before use.
| Tastes | sweet, sour, astringent |
|---|---|
| Organ Systems | circulatory, digestive, nervous |
| Thermal Nature | neutral |
| Moisture | neutral |
| Parts Used | leaves, flowers, berries |
| Preparations | extract, tea/infusion, tincture, powder, syrup |
| Organs and Tissue | heart, blood |
Growing Guide
Hawthorn can be grown from seed but requires patience due to its natural dormancy cycle. Seeds often need both warm and cold stratification before germinating and may take one to two years to sprout. For best results, sow seeds outdoors in autumn and allow natural seasonal cycles to break dormancy. Hawthorn prefers full sun and well-drained soil but tolerates a wide range of conditions, including clay and slightly dry soils once established. Young plants grow slowly but develop strong, long-lived trees or shrubs. Hawthorn can also be propagated by grafting or from semi-hardwood cuttings. Because of their thorns and dense branching, plants are often used as hedges or wildlife habitat.