Service Tree
Sorbus domestica

Family: Rosaceae

What it is like

Sorbus domestica is a deciduous Tree growing to 15 m (49ft 3in) at a medium rate. See above for USDA hardiness. It is hardy to UK zone 6 and is not frost tender. It is in flower in May, and the seeds ripen from September to October. The species is hermaphrodite (has both male and female organs) and is pollinated by Insects. It is noted for attracting wildlife. Suitable for: light (sandy), medium (loamy) and heavy (clay) soils and prefers well-drained soil. Suitable pH: mildly acid, neutral and basic (mildly alkaline) soils. It can grow in semi-shade (light woodland) or no shade. It prefers moist soil. The plant can tolerates strong winds but not maritime exposure.

Height (m): 15

Where it is found

Woods and bushy places.

Europe.

Conservation Status:

Countries/locations it is found in

How it is used

Food

Rating: 5

Fruit - raw or cooked. The fruit is usually bletted if it is going to be eaten raw. This involves storing the fruit in a cool dry place until it is almost but not quite going rotten. At this stage the fruit has a delicious taste, somewhat like a luscious tropical fruit. The fruit will often begin its bletting process whilst still on the tree and we have eaten delicious fruits straight from the tree in mid-September. The fruit can also be dried and used like prunes. The fruit is up to 3cm across.

Medicine

Rating: 0

Other

Rating: 2

The bark is a source of tannin. Wood - fine grained, very heavy, hard to split. Used for furniture, screws, wine presses etc.

Tannin: An astringent substance obtaied from plants, it is used medicinally, as a dye and mordant, stabilizer in pesticide etc.

Wood: A list of the trees and shrubs that are noted for having useful wood.

Attracts Wildlife: Plants noted for attracting wildlife

Food Forest: Plants for Edible Forest Gardens and Food Forests.

How it is grown

Succeeds in most reasonably good soils in an open sunny position. Tolerates light shade, though it fruits better in a sunny position. The service tree is occasionally cultivated for its edible fruit. There are 2 distinct forms, S. domestica pomifera. (Hayne.)Rehd. with apple shaped fruits (which ripen from September) and S. domestica pyriformis. (Hayne.)Rehd. with pear shaped fruits which ripen from October. Plants are susceptible to fireblight and to canker (which is especially prevalent in areas with high rainfall). They grow best in the drier areas of Britain, which in general means the eastern half of the country. The plant is heat tolerant in zones 8 through 6. (Plant Hardiness Zones show how well plants withstand cold winter temperatures. Plant Heat Zones show when plants would start suffering from the heat. The Plant Heat Zone map is based on the number of "heat days" experienced in a given area where the temperature climbs to over 86 degrees F (30°C). At this temperature, many plants begin to suffer physiological damage. Heat Zones range from 1 (no heat days) to 12 (210 or more heat days). For example Heat Zone. 11-1 indicates that the plant is heat tolerant in zones 11 through 1.) For polyculture design as well as the above-ground architecture (form - tree, shrub etc. and size shown above) information on the habit and root pattern is also useful and given here if available. The plant growth habit is a standard with a non-suckering single trunk. In garden design, as well as the above-ground architecture of a plant, root structure considerations help in choosing plants that work together for their optimal soil requirements including nutrients and water. The root pattern is branching: a heart root, dividing from the crown into several primary roots going down and out .

Propagating it: Seed - best sown as soon as it is ripe in a cold frame. If you have sufficient seed it can be sown in an outdoor seedbed. Stored seed germinates better if given 2 weeks warm then 14 - 16 weeks cold stratification, so sow it as early in the year as possible. Prick out the seedlings into individual pots when they are large enough to handle. Seedlings are very slow to put on top-growth for their first year or two, but they are busy building up a good root system. It is best to keep them in pots in a cold frame for their first winter and then plant them out into their permanent positions in late spring.

Best place to grow: Woodland Garden Canopy;

Habit: Tree

Hardiness: 6-10

Growth: Medium

Soil: Light (sandy), medium, heavy (clay)

Shade: Semi-shade, no shade

Moisture: Moist

Things to keep in mind

The seeds probably contain hydrogen cyanide. This is the ingredient that gives almonds their characteristic flavour. Unless the seed is very bitter it should be perfectly safe in reasonable quantities. In small quantities, hydrogen cyanide has been shown to stimulate respiration and improve digestion, it is also claimed to be of benefit in the treatment of cancer. In excess, however, it can cause respiratory failure and even death.

Its other names

Local names

Synonyms

Cornus domestica. Pyrus sorbus.