Juneberry

Family

Rosaceae

Habit

Shrub

Height

6 m

Spread

4 m

Growth

medium

Lifespan

50 years

First yield

after 3 years

Hardiness

zone 3–7

Shade tolerance

light shade

Soil

Sand, Silt, Loam, Clay

Soil moisture

semi-dry – very wet

pH

5.6 – 6.6

Times apply to the northern hemisphere in a temperate climate and shift with altitude and cultivar.

Edible: The fruits ripen from late June to mid-July, turning from light purple-red through red-violet to blue-black; only then are they fully ripe and genuinely sweet. They are pea-sized, juicy and carry a fine marzipan note that comes from the soft seeds — they taste best straight off the bush. In the kitchen they go into compote, puree and juice, but above all into mixed-fruit jams, to which they give depth of colour without dominating the flavour; dried they resemble currants, which is where the old German name Korinthenstrauch comes from. They freeze well. Sugars, tannins and leucoanthocyanins dominate the composition; the flesh is free of the cyanogenic glycoside prunasin, which has been detected in other parts of the plant. Anyone hoping to harvest must beat the birds to it — they strip a bush in a matter of days.

Other uses: Since the 1960s snowy mespilus has been part of the standard range in urban planting: it stands up to city conditions and roadside sites and stays, at four to six metres, within a scale that is manageable on embankments and in front gardens — unlike most serviceberries it even suits large containers. Its ornamental value is spread across the year: copper-red leaf flush in April, the white flower racemes of six to twelve centimetres at the same time, and yellow to glowing copper-red colour in autumn. In gardens it is planted as an informal hedge and screen, in the landscape for field copses and bank stabilisation. The wood is hard but comes in dimensions too small for anything beyond turnery and small implements.

Site: Sun to light partial shade on sandy to loamy, rather acid soil; lime and wet ground trouble it little, deep shade a great deal. It reaches four to six metres in height and five to six in width, growing twenty to twenty-five centimetres a year — allow final spacing accordingly. Three points decide where it goes. First, fire blight: serviceberries are host plants of Erwinia amylovora, so it does not belong immediately next to orchards, and local regulations must be observed in affected areas. Second, its spread: birds carry the seed far, and in north-western Germany and the Netherlands the species is pushing into sandy heath and acid oak woodland — it should not be planted on the edge of heath, dune or dry grassland reserves. Third, the fruit juice: from late June ripe fruits drop and leave blue-violet stains on paving, decking, car paint and laundry. Do not site it over a seating area, parking space or washing line. As a shallow-rooter with a dense root mat it makes underplanting difficult. Care: Water for the first two seasons; after that it looks after itself and needs no feeding. What matters is rejuvenation pruning at intervals of several years: without it the lower crown goes bare. Take out the oldest stems at ground level rather than topping the crown. Root suckers stay moderate and can be severed. Young plants need protection from deer browsing. Birds take their share; anyone wanting a crop picks early or nets. Among diseases fire blight comes first: shoot tips that hook over and dry black-brown are cut well back into healthy wood, tools are disinfected, and the prunings are burnt or binned rather than composted. Powdery mildew and leaf spot appear on crowded, damp specimens and are defused by thinning. Grafted standards need regular checking for rootstock suckers.

The easiest route is vegetative: peg down low shoots in spring, mound soil over them and sever them as rooted layers after a year; root suckers can likewise be lifted with a piece of root. Snowy mespilus can also be raised from seed — harvest ripe fruit in July, rub off the flesh and wash it thoroughly, then sow at once into a sheltered outdoor bed. The seed needs cold and three to four months of frost, and part of it comes up only in the second spring, so leave the bed standing. Seedlings are uneven in fruit size and flavour; anyone after a crop takes a vegetatively propagated fruiting selection such as Prince William. The usual form is a bush on its own roots. Standards are occasionally produced by grafting onto hawthorn, rowan or Cotoneaster bullatus as rootstock — these must be checked for rootstock suckers permanently. Cuttings root poorly.

Snowy mespilus is an introduction that delivers more ecologically than its status suggests. Its white flower racemes open in April, at a time of thin forage; around thirty wild bee species are documented as visitors, among them the bearded mining bee and the black-horned bee, though the nectar is moderate and the pollen rather sparse. Its strength is the fruit: the small berries ripen from late June, when there is little else to be had in the garden, and thrushes, blackbirds, starlings and pigeons take them whole. The dense upright branching carries nests and gives cover. The cost sits on the other side of the ledger: that same bird dispersal has carried the species into sandy heath and acid oak woodland in north-western Germany and the Netherlands, where it displaces native vegetation. In town and home gardens it is a good choice; in semi-natural surroundings the native Amelanchier ovalis is preferable.

Special notes: Fruit ripens unevenly from late June to mid-July pick over several times; birds strip the bush within days net or harvest early; the juice stains blue-violet (paving, decking, car paint, laundry); host plant for fire blight keep distance from orchards; very frost hardy (to about -34C); goes bare from below rejuvenation pruning every few years; tolerates city conditions urban planting+containers; naturalised in NW Germany+NL (agriophyte) not beside heath and dune reserves

North-eastern North America, origin unresolved. Snowy mespilus was described from European material, and wild populations matching the forms cultivated here are not known in North America today; an origin in the north-east of the continent is assumed, possibly as a hybrid. In western Europe it has naturalised completely and counts as an agriophyte in north-western Germany, the Netherlands, northern Belgium and southern England — a species, that is, fully settled into the natural vegetation. Birds do the spreading: thrushes, starlings and pigeons swallow the fruit whole and carry the seed long distances. Since the 1960s it has additionally been planted on a large scale in urban greenery and on road embankments.

Snowy mespilus is a light-demanding pioneer shrub of sandy, rather acid soils. In Central Europe it is found above all at the margins of acid oak and birch woodland, in pine plantations, on sandy heath and in dune scrub in the north-west, as well as along woodland edges, on spoil banks and in hedges where birds have dropped the seed. It tolerates frost and waterlogging as readily as spells of drought, which gives it an edge on changeable sandy ground, and it makes do with nutrient-poor soils. In the shade of closed woodland it stays stunted and barely flowers — it needs the open edge.