Crataegus monogyna aka English Hawthorn

Crataegus monogyna, or common hawthorn, belongs to the rose family. Its native range spans Europe, North Africa, and western Asia. It sheds its leaves and forms a dense, rounded crown. Some branches droop slightly beneath the spreading canopy. Garden trees often reach 20–30 feet [6–9 metres] tall. RHS gives a smaller size range but describes trees reaching 33 feet [10 metres]. Virginia Tech records heights up to 40 feet [12 metres]. RHS lists spreads up to 26 feet [8 metres].

Long, stiff thorns grow along the slender stems. Young bark is smooth and reddish brown. Older bark turns grey and develops scales. The leaves grow in an alternate pattern along each twig. They have deep lobes, with teeth near the tips. Their glossy upper sides are dark green; the undersides look paler. RHS reports gold autumn leaves, though UConn finds their display modest. Small white flowers form clusters in mid to late spring. UConn records May blooms lasting seven to ten days. The scented flowers have five petals and pink anthers.

Dark red pomes ripen in early autumn, including September. Each fruit usually holds one stone, which gives the tree its name. Birds eat the fruit, and hedges provide wildlife shelter. People use the flesh for jelly, jam, and tea. PFAF also lists flowers, leaves, and young shoots as edible. It describes dried leaves for tea and raw young shoots. Safety reports differ: PFAF lists no known hazards. RHS warns that seeds contain toxins and must be removed before eating fruit. RHS also warns against pets eating the fruit.

Grow this tree in sun or partial shade. UConn favours full sun and moist, fertile soil. RHS accepts chalk, clay, loam, and sand across all pH ranges. Soil must drain; waterlogged ground does not suit it. The tree grows slowly and tolerates pruning. It suits hedges, screens, and specimen planting in exposed or coastal gardens. RHS rates it H7, while PFAF gives USDA zones 4–8. Its hard wood serves for handles, turned goods, and fuel.

Thorns and pest problems can limit its garden use. Aphids, caterpillars, and gall mites may attack it. Diseases include fireblight, mildew, leaf spots, and honey fungus. Crown gall and silver leaf are further risks. Oregon State reports resistance to some hawthorn diseases, including rust. It also warns that this species can become invasive. Heavy seed production can create thickets that crowd out other plants. In Oregon oak woods, these stands can harm wildlife habitat.