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Prunus domestica Opal - Common plum

Prunus domestica Opal
European plum, Common plum, Garden plum

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More information

Graden Merit
A fairly vigorous, productive and regular variety with small round to oval, purple-red plums with juicy, tasty flesh. Harvest in late July and August. The Opal Plum is self-fertile and proves to be a very good pollinator. It is resistant to diseases.
Flavour
Sugary
Height at maturity
5 m
Spread at maturity
3 m
Exposure
Sun, Partial shade
Self-fertilising
Best planting time January to February, November to December
Recommended planting time January to March, October to December
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Flowering time April
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Harvest time July to August
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Description

The Opal Plum is a fairly vigorous, productive and regular variety. It produces small round, slightly oval, purple-red plums with juicy, tasty flesh. The harvest of this early variety starts in late July and continues into August. The Opal Plum is self-fertile and proves to be a very good pollinator. It is resistant to diseases.

The origin of plum trees is said to be Syria, not China. During the time of Roman rule in the region, various local fruits including plums were introduced to Rome. The Opal Plum is a variety selected in Sweden in 1925, in Alnarp. It is the result of cross-breeding: Early Favourite with Reine-Claude d'Oullins.

This fruit tree naturally grows up to 5m (16ft) tall at maturity. Its upright silhouette is good and it will be easy to harvest when pruned properly. It enjoys sunshine or partial shade, sheltered from the wind and grows in any type of rich, moist, deep and even heavy soil, without limestone.
Its leaves are ovate, almost oblong, toothed and slightly hairy.
Flowering occurs in late April when tree is completely covered in white flowers that appear on the previous year's shoots. They are self-fertile and this variety is perfect for pollinating many other plum trees.
It produces small round, slightly oval, purple-red plums with juicy and tasty flesh.

Plums can be eaten raw from the tree, in fruit salads, in desserts and pastries or as an accompaniment to meat dishes. They are made into jams, of course, but also into syrup fruits, compotes... They are also used to make brandy.

Prunus domestica Opal - Common plum in pictures

Prunus domestica Opal - Common plum (Harvest) Harvest

Plant habit

Height at maturity 5 m
Spread at maturity 3 m
Growth rate normal

Fruit

Fruit colour red
Fruit diameter 3 cm
Flavour Sugary
Use Table, Jam, Patisserie, Alcohol
Harvest time July to August

Flowering

Flower colour white
Flowering time April
Bee-friendly Attracts pollinators

Foliage

Foliage persistence Deciduous
Foliage colour medium green

Botanical data

Genus

Prunus

Species

domestica

Cultivar

Opal

Family

Rosaceae

Other common names

European plum, Common plum, Garden plum

Origin

Cultivar or hybrid

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Planting and care

The Opal Plum is easy to grow and thrives in any type of light, rich, neutral or acidic soil which is moist but not wet and without limestone. Ensure proper drainage with a thin layer of gravel in the planting hole. Dig a hole two to three weeks before planting, twice as wide and deep as the pot. On the day of planting, place the tree with its pot in water, allowing the entire root ball to be moistened by capillary action. Add compost to the bottom of the hole. Place the tree in the hole, fill with a mixture of soil and compost. Do not bury the graft union. Firmly pack the soil around the base. The root ball should be completely covered. Water generously. You can add a small handful of wood ash in winter as it is rich in potash and can improve fruiting.

Planting period

Best planting time January to February, November to December
Recommended planting time January to March, October to December

Intended location

Suitable for Meadow
Type of use Border, Free-standing, Vegetable garden, Orchard
Hardiness Hardy down to -15°C (USDA zone 7b) Show map
Exposure Sun, Partial shade
Soil pH Neutral, Calcareous

Care

Pruning instructions Only prune if necessary, as pruning cuts in plum trees can become susceptible to diseases. Training pruning to form the framework of the tree: In the first winter, outside the freezing period, prune the tree to leave 4 to 5 outward-facing branches. Fruiting pruning: after the harvest of the plums, and before autumn, remove dead wood and fragile branches. Remove any fruits left on the tree and burn them. Remove any shoots at the base of the tree.
Pruning Pruning recommended once a year
Pruning time September to December
Soil moisture Tolerant
Disease resistance Good
Overwinter Can be left in the ground

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