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Prunus domestica Opal - U Shape Common plum

Prunus domestica Opal
European plum, Common plum, Garden plum

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More information

Graden Merit
A variety of fairly strong vigour, productive and regular. Small round to ovate plums, purple-red on a yellow background. Juicy and 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 variety of fairly strong vigour, productive and regular. It produces small round plums, slightly oval, purple-red on a yellow background. Their flesh is juicy and tasty. The harvest of this early variety starts at the end of 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 original area of plum trees is said to be Syria, not China. During the time of Roman hegemony 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' x 'Reine-Claude d'Oullins'.

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

The plums are consumed raw at the foot of the tree, in fruit salads, but also in desserts, pastries, as an accompaniment to meat and dishes. They can be transformed into jams, of course, but also into preserved fruits, compotes... They can also be used to make eau-de-vie.

Prunus domestica Opal - U Shape Common plum in pictures

Prunus domestica Opal - U Shape 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

Easy to grow, the 'Opal' Plum Tree thrives in any type of light, rich, neutral or acidic soil, as long as it is moist but not overly wet and without limestone. Ensure proper drainage by adding a layer of gravel to 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 a basin of water to moisten the entire root ball through capillary action. Add compost to the bottom of the hole. Place the tree in the hole and fill with a mixture of soil and compost. Do not bury the graft union. Firmly tamp down the soil around the base. The root ball should be completely covered. Water generously. You can add a small handful of wood ash, rich in potash, during the winter to 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 -29°C (USDA zone 5) Show map
Exposure Sun, Partial shade
Soil pH Neutral, Calcareous

Care

Pruning instructions Only prune as necessary as plum trees become susceptible to injuries and therefore diseases. Apply a healing sealant to protect it. Training pruning for plum trees: it is used to shape the tree's framework. In the first year, during winter but outside the freezing period, prune the tree to obtain 4 to 5 branches oriented outward. Fruiting pruning: after the plum harvest, and outside the freezing period, remove dead wood and fragile branches. Remove any fruits remaining on the tree and burn them. Eliminate suckers (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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