Hawthorn
Crataegus monogyna
Botanical family: Rosaceae
Crataegus monogyna (one-styled hawthorn) and Crataegus laevigata (two-styled hawthorn) are the two common species of European hedges, covered in May with fragrant white flowers then, in autumn, with small red fruits (haws). Hawthorn flowering tops are listed in the European Pharmacopoeia.
Sun to partial shade
Any soil, even chalky or clayey
Low once established
Very hardy (withstands -25 °C)
Overwinters in your zone
Role in permaculture
A slow-growing but very long-lived thorny shrub, hawthorn forms the classic backbone of multifunctional country hedges: defensive thanks to its thorns, nectar-bearing at the May flowering, food-bearing in autumn (haws appreciated by birds), and a refuge for small wildlife all year round.
Poor companions
Same family: shared diseases and pests
Insects attracted or useful
Known pests & diseases
Pests and diseases that commonly affect this plant, tap to learn how to recognise and manage them.
Documented synergies
Relationships backed by a named source, with their real scope. A synergy without a named reference has no place here, no “it is said that…”.
An important point in an orchard: the hawthorn is a natural host plant of fire blight (Erwinia amylovora), the disease that strikes apple and pear trees. The European reference organisation (EPPO) explicitly cites it among the sources of inoculum. The risk of transmission to a neighbouring orchard depends on the climate (heat and humidity at flowering), the distance, and the local pressure.
institutional source
- · EPPO Global Database, Erwinia amylovora (ERWIAM), datasheet (hôtes Crataegus, source d'inoculum ; statut A2)
- · EPPO Reporting Service 2019/3425, feu bactérien sur Crataegus monogyna
Its dense white flowering in April–May offers nectar and pollen at a time when few other woody plants are in bloom, an early resource visited by solitary bees, the honeybee, and hoverflies (whose larvae eat aphids). A real and locally important resource; its exact contribution to a garden's pollinator network varies from year to year and is not quantified.
reference work
- · Woodland Trust, Hawthorn (Crataegus monogyna), species page (pollinator value)
Its dense thorny thicket shelters insectivorous birds and beneficial arthropods (ladybirds, lacewings, hoverflies), the classic role of the country hedge as refuge and corridor. A plausible and traditionally observed habitat service; the quantified effect on regulating a neighbouring kitchen garden's pests is not isolated in a verifiable study. A general ecosystem service, not guaranteed protection.
reference work
- · Woodland Trust, Hawthorn (Crataegus monogyna), species page (nesting shelter for birds)
- · Landis, D.A., Wratten, S.D. & Gurr, G.M. (2000). Habitat management to conserve natural enemies of arthropod pests in agriculture. Annual Review of Entomology, 45, 175-201.
Seasons & availability
White blossom picked in May, haws gathered in autumn; dried flowers and leaves keep all year round.
Available: January, February, March, April, May, June, July, August, September, October, November, December.
Guidance for the oceanic / temperate climate; it may vary with your region, altitude, exposure and growing method.
Sources
- Woodland Trust, « Hawthorn (Crataegus monogyna) » (woodlandtrust.org.uk/trees-woods-and-wildlife/british-trees/a-z-of-british-trees/hawthorn)
- Tela Botanica, « Crataegus monogyna Jacq. » (tela-botanica.org/bdtfx-nn-19472-description)
- Plants For A Future, « Crataegus monogyna » (pfaf.org/user/Plant.aspx?LatinName=Crataegus+monogyna)
Nutritional & medicinal properties
For educational purposes. Not a substitute for medical advice. Effects depend on the form, the dose and personal context.
Precautions & contraindications
Hawthorn is traditionally associated with heart comfort and nervousness, but any heart condition comes under medical advice: do not self-medicate, as interactions with certain heart treatments are possible. According to the EMA monograph, if symptoms persist beyond two weeks, consult a health professional. As a precaution, avoid concentrated or prolonged use during pregnancy and breastfeeding without professional advice (limited data). Remove the stone(s) from the haws and do not crunch them.
Family behaviour: Rosaceae
In general, Rosaceae are traditionally paired with garlic (reputed antifungal, an in-vitro effect against Venturia inaequalis but little demonstrated in the field), tansy and comfrey. This is the fruit family (strawberry, raspberry, apple, pear, cherry, plum, peach). Tansy is the emblematic companion of the apple tree guild.
Understanding families means learning one rule per family rather than every pairing one by one. Learn more →
Species & varieties
The best-known species and varieties in France.
Species
Common varieties
Voices of peoples
Paraphrases attributed to their documented sources. Never an invented quote.
Irish Celtic tradition · Rural Ireland, still-living traditions
In the Irish countryside, the lone hawthorn in the middle of a field is called the 'fairy thorn'. Cutting one of these solitary hawthorns is considered an act that draws misfortune: the fairies dwell there. The tradition is so ingrained that in 1999 the Irish State had the route of the M18 national road diverted to spare a lone hawthorn that the inhabitants refused to see felled. The hawthorn hedge, more broadly, is the backbone of the European bocage, defensive, nectar-rich, a refuge for small wildlife.
Tradition irlandaise documentée par Eddie Lenihan (folkloriste), Meeting the Other Crowd (2003) ; affaire de la route M18 et de l'aubépine de Latoon (presse irlandaise, 1999).
Keep in mind
In the orchard, better to keep it away from apple and pear trees, which it can infect with fireblight (OFEV 2004 and Agroscope 2016 recommendations).
A note on rigour: many companion pairings are gardening folklore; this note sums up what the sources say, where there are any.
Before you forage
This plant is often gathered from the wild. Only pick what is abundant, never a protected species, and never uproot a whole plant (roots) without the landowner's permission. Rules vary by country and region, check locally.
Key takeaways
- • Prefers sun to partial shade exposure.
- • Ideal soil: any soil, even chalky or clayey.
- • Keep away from: Apple tree.