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Plum (Prunus) 'Rivers Early Prolific' St. Julien 'A'

Plum (Prunus) 'Rivers Early Prolific' St. Julien 'A'

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Price £ 69.99
Picture credit - Frank P Matthews
Plum (Prunus) 'Rivers Early Prolific' St. Julien 'A'
Price £ 69.99

Plum 'River's Early Prolific'

  • EAN code
  • Brand
  • Pot Size
  • Aspect
    South-facing, West-facing
  • Attractive to Wildlife
    Attractive to Bees
  • Flower Colour
  • Flower Form
  • Foliage Colour
  • Foliage Type
  • Fruit Colour
  • Fruiting Period
  • Garden Style
    Fruit Garden
  • Hardiness (RHS rating)
    H6 -20 to -15ºC. Hardy - very cold winter
  • Moisture
    Moist but well-drained, Well-drained
  • pH
  • Plant Habit
    Spreading / Branched
  • Plant Type
    Fruit and Edible Plant
  • Rootstock
    St. Julien 'A' - Semi Vigorous
  • Soil Type
    Clay, Loam, Sand
  • Special Attributes
    Berries or Fruit, Self-fertile
  • Sunlight
    Full Sun
  • Uses for the Variety
    Cooking, Eating

Rootstocks are used to control the ultimate size of a tree, we use a wide range of rootstocks from very dwarf which are ideal for smaller gardens to very vigorous which are commonly used in traditional orchards. Rootstocks can also offer disease resistance and tolerance of difficult growing conditions.



M.27 - Very Dwarf. Produces the true mini tree, varieties reaching no more than 2 metres with little support required, excellent for the small garden. Fruit size small. Good for triploids on strong soils but will stunt diploides on poor soils.

M.9 - Dwarf. Very productive and induces good fruit size. Poor anchorage needing permanent staking. Ideal for cordons and spindles. There are over 100 M9 types and together they account for the majority of commercial orchards worldwide.

G.11- Dwarf. From the USA and bred in the 1960s this rootstock is a cross between M26 and Robusta 5. Resistant to fire blight, phytophthora and tolerant to frost, this rootstock is slightly more vigorous than M9 and more productive.

M.26 - Semi Dwarf. Requires support on most sites. Good for bush and cordons in limited spaces. Suits certain varieties well i.e Bramley and Egremont Russet. Can induce 'bare wood' in some varieties such as Cox. Susceptible to woolly aphid.

M.116 - Medium vigour. Although bred at East Malling Research Station some years ago this selection has only just become commercially available. Between MM106 and M26 in vigour this very productive rootstock has resistance to collar rot/phytophora, replant disease and woolly aphid. As productive as MM106 with 10% less vigour this is likely to prove to be an all round performer for many commercial (particularly cider) and amateur situations.

MM.106 - Semi vigorous. General purpose for most types of tree; bush, cordon and half standard. Very productive from an early age. Can succumb to collar rot or phytophora on poorly drained soils. Resistant to woolly aphid.

MM.111 - Vigorous. Produces a standard on good soils and half standard on poor soils, excellent collar rot and general disease resistance. Resistant to woolly aphid.

M.25 - Very vigorous. Ideal for half and full standard trees. Heavy crops from an early age. Not resistant to woolly aphid.



Gisela 5 - Dwarf. 50% of Colt. Ideal for commercial orchards, gardens and patio pots.

Weigi®2 - Dwarf. Comparable vigour to Gisela 5 but more robust to heat differences and stress. Increased fruit size and productivity.

Gisela 6 - Semi Dwarf. 75% of Colt. All the attributes of Gisela 5 but for less than good soils.

Colt - Semi vigorous. Fully compatible with all varieties, will contain trees to 4 - 5 metres. Considered very productive until the arrival of Gisela. Still good for bush and half standard cherries on thin soils.

Prunus F.12.1. - Very Vigorous. The best clonal selection of mazzard for standards. Good anchorage.



Compatibility: It should be noted that there are many incompatible varieties when worked on Quince (especially Quince C). In these instances a suitable interstock should be used and Beurre Hardy, Doyenne du Comice and Old Home are suitable. The latter will also impart some resistance to Fireblight.

Quince 'C' - Dwarf. and slightly earlier into cropping.

Quince Eline® - Dwarf. Similar size to Quince 'C' but more productive and very hardy. Smoother fruit with less russetting.

Quince 'A' - Semi Vigorous. The ideal root stock for bush trees.

Pyrodwarf - Vigourous. A German selection giving something between Q.A and Pyrus communis from early observations. Probably more vigorous than claimed. Early signs are very promising due to early fruiting influence, uniformity and resistance to fireblight through its Old Home parentage.

Pyrus communis (Seedling pear) - Very vigorous. More suitable for half standard and especially standard trees.

Pyrus Kirchensaller - Very vigorous. A more uniform and productive selection of Pyrus communis.


Apricots / Peaches / Nectarines / Plums

Pixy - Semi Dwarf. Ideal for size containment in the garden. On very strong soils it still has commercial use for strong growing shy cropping varieties such as Marjories, Avalon and Excalibur.

VVA-1 - Semi Dwarf. Pixy size with better fruit size, yield and winter hardiness.

Torniel - Semi-Dwarf. A specialist rootstock for improved fruiting yield and fruit size.

Krymsk 86 - Medium. Compatible with apricots, peaches and nectarines. More tolerant of heavy wet soils with better anchorage.

Plumina ® (Ferlenain) - Semi Dwarf. A French selection with similar tree size to Pixy but improved fruit size. Grows strongly in the first few years and then settles quickly into regular cropping. Some suckers.

Jaspi ® - Semi Vigorous. A french stock, untested as yet but with St Julien 'A' vigour and good resistance to root aphixiation in wet situations.

Wavit - Semi Vigorous. A robust disease resistant medium vigour, free standing and non suckering rootstock for plum, gage and damson, mirabelles and apricots proven to suit a wide range of soils and conditions. (SJA -10%)

St. Julien 'A' - Semi Vigorous. This is fully compatible with all plums, damsons, gages, peaches, nectarines and apricots and many ornamental prunus species. Good yield influence. Not suitable for poorly drained soils.

Brompton - Vigorous. Very suitable for standards, does not sucker and fully compatible with all varieties unlike its predecessor such as Myroblan.

Fruit Tree Pollination

All fruit trees will crop satisfactorily in an urban situation as insect pollination activity covers considerable distances.

Below is some useful information for all you need to know about pollination.


Self Fertile

Look out for the Self Fertile symbol on our fruit labels. This means your tree will crop satisfactorily on their own. Each of the fruit groups have varieties that are self fertile, a few in apples, pears and cherries and all apricots, nectarines and peaches.


Flowering Groups

Look out for the Flowering Group symbols, flowers with numbers 1-5. Each of the fruit trees are divided into 5 flowering periods. This covers approximately a month from beginning of period 1 to the end of period 5. For trees to cross-pollinate they need to be the same or adjacent flowering group, e.g. an apple tree of flowering group 3 will cross-pollinate with those of groups 2, 3 and 4.


Good Pollinator

Particularly good pollinators are highlighted by our bee symbol.



Triploid varieties are marked with this symbol in the fruit sections. To pollinate, they should be accompanied by two other non-triploid varieties that will also pollinate each other or one variety that is self fertile. 


Top Tips


  • Two trees of the same variety will not pollinate each other unless they are self fertile.
  • Always bear in mind that crop yield will be affected by adverse weather and in these circumstances it is helpful to have several different varieties that provide strong and ample pollen for cross pollination opportunities.
  • It is quite normal for trees to have a light cropping year after a heavy one – like us they need a rest after a big effort. See more on this below under Biennial bearing
  • For fruit trees to pollinate one another they need to be of the same type e.g both apples or both pears.


Apples & Pears

Follow the tips above for guidance for apples.  Apples are regular croppers and Malus crab apples are excellent pollinators for fruiting apples.



Follow the tips above for guidance for pears. Pears prefer to have a warm sheltered position to set a good crop.


Plums, Gages, Damsons and Mirabelles

Most varieties are self fertile. The few which aren't are unlikely to need a pollinator unless planted somewhere very remote.


Most good garden varieties are self-fertile. All self-fertile varieties are known as 'Universal Donors' in that they will pollinate any other cherry trees that flower at the same time, so if unsure then just include at least one self-fertile variety in your garden. Sour cherries, such as Morello and Meteor Korai, are all self-fertile, they can pollinate sweet cherries but sweet cherries will not pollinate them.

Peaches, Nectarines, Apricots, Almonds, Medlars & Mulberries

All varieties are self fertile so don't need a pollinating partner.


A few Quince varieties are self fertile. Other varieties may need to be accompanied with a pollinator.


Broadview and Buccaneer are the two self-fertile varieties we would recommend for gardens. Other varieties are likely to be partially self-fertile and would benefit from nearby pollinators. Walnuts are pollinated by wind rather than insects so bear this in mind when choosing your site.


Hazels will crop better if varieties are mixed together but due to the abundance of hazels in the wild, good crops usually appear. Like walnuts, pollination is mostly carried in the wind.

Malus Crab Apples

These are a very useful range of trees where many varieties will pollinate apples. Mostly all ornamental Malus are self fertile themselves, indicating how useful their pollen is for cross pollination.


Biennial bearing


Some fruit trees can produce a heavy crop one year followed by a much lighter crop the year after, this is known as ‘biennial bearing’ or ‘biennial cropping’. Traditional or ‘heritage’ varieties tend to be more biennial bearing than many modern varieties that have been bred to crop more regularly every year. Biennial bearing is a natural phenomenon as a heavy crop can exhaust the tree’s resources leaving it with insufficient energy to set much fruit bud for the following year.

It is possible to manage the tree to produce a more regular yearly crop by using the following methods:

  • In the ‘on’ year thin the fruit before it ripens and summer prune before July.
  • Following an ‘off’ year heavily prune in the winter to reduce the likely heavy forthcoming crop.
  • Repeat either of these remedies as necessary until the tree settles into an annual cropping habit.

This product is only available for local delivery to the postcodes below via our own delivery service. We will contact you to arrange delivery, which will be within 7 days of your order being placed.

£12.50 – NE3, NE5, NE13, NE20

£17.50 – NE2, NE4, NE7, NE12, NE15, NE23

£25.00 – NE1, NE6, NE8, NE18, NE21-22, NE24, NE27, NE28, NE40-42

£30.00 – NE9-NE11, NE16-17, NE19, NE25-26, NE29-30, NE37-39, NE43-46, NE61-64

£40.00 – NE31-36, NE47, NE49, NE65, DH1-9, SR1-7

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Total order amount
£ 69.99