Plant

By David Marks
Plum trees are extremely hardy plants and can be grown in all areas of the UK. The previous page has helped you select the correct plum tree for your garden, this page will help you to plant your tree at the correct time and in the best place.

The first factor to consider is where to plant your plum tree. They tolerate a wide range of conditions but some soil conditions are better than others. Timing is not crucial but again, some times of the year are better than others. The method of planting is important especially the depth.

WHERE TO PLANT YOUR PLUM TREE

Plum trees prefer a soil with lots of body in in it, loam or clay soils are best. If your soil is sandy and / or light then add lots of organic material prior to planting. This will fill out the soil and help it retain moisture and nutrients. Avoid water-logged soils, they are cold and damp in winter and your plum tree will not provide its best in those conditions.

The site of a plum tree is less important than the soil conditions, but they will do better in an open and sunny site. Having said that, some varieties such as Belle de Louvain will tolerate partial shade very well. Protection from strong winds is good, especially at pollination time. The reason for this is that insects, bees in particular, stay well-tucked up when strong winds are blowing, and you need lots of bees and other insects to ensure good pollination.

WHEN TO PLANT YOUR PLUM TREE

Any time of year is fine to plant your plum tree as long as you can provide it with a good supply of moisture for the first year while it is establishing a good root system. There is a best time however and that is in the early winter. At this time of year the soil will still be warm from the summer and autumn months but at the same time the soil will be naturally moist from the early winter rain.

Natural rain water is best for your plum tree and in winter you don’t need to be continually thinking if your newly planted plum tree is loosing too much moisture from hot sun.

HOW TO PLANT YOUR PLUM TREE

It’s a good idea to prepare the soil a month or so in advance although this can be done at the time of planting. Dig over the area adding as much well-rotted organic material as you can. A few handfuls of bonemeal or blood, fish and bone fertiliser worked into the soil will also provide a long-lasting supply of nutrients.

To plant a container grown plum tree dig out a hole slightly larger than the pot and plant the tree so that the soil on the tree is level with the soil on the ground. Fill in with soil around the root ball and firm it down. Water well.

If planting a bare-rooted tree then dig out a hole large enough to take the roots spread out. Then place the tree roots in the hole and start to fill round with soil. The tree should be planted to the same depth as it was previously – a soil line should be visible on the main stem about 5cm to 10cm below the join (see here for picture). Never plant the tree with the join below the soil level.

All newly planted plum trees will need a stake to support them in the first three years of their life. Drive the stake into the ground about 15cm / 6in from the main trunk and then tie the trunk securely to the stake. The “ties” are best bought from a garden centre. If string or thin ties are used these may well cut into the bark of the plum tree and this can be a site for fungal infection.

When your plum tree is planted it is best to read the instructions which came with it and follow those as far as first year pruning is concerned. If you have no instructions we suggest pruning a one year old plum tree to a height of about 1m / 3ft. When you do this it is very important to make sure that at least two buds (preferably three) are left below the pruning point. It is from these buds that the main branches will grow. If there are no buds below the 1m height (unlikely) then prune to a higher point so that the buds are present.

If your new plum tree is a two year old then the main branches will already have developed significantly. For both one and two year old new trees see our page specially devoted to pruning both new and established plum trees for much more detail and some useful pictures.

TRANSPLANTING AND MOVING PLUM TREES

Not much is written about transplanting established plum trees, probably because most people never do it. However, if you are moving house then you may well want to move your plum tree with you.

Our experience shows that a three year old plum tree on either Pixy or St Julien A rootstock can be successfully moved. We did this a couple of years ago and the tree is now producing plums. We moved the tree in December when it was dormant (essential) and although all the plums dropped in the first year after moving, the plum tree re-established itself and produced plums in second and subsequent years after moving.

Dig out the soil to contain as much of the root-ball as you can carry and ensure the soil stays on the roots. If the tree is three or more years old then inevitably you will need to cut through some roots but take as large a root-ball as is possible. Replant to the same level in the soil as previously and water well if the soil is dry.

COMMENTS / QUESTIONS LEFT BY OUR READERS

We have moved the Plum Tree comments and questions section to its own page which can be visited by clicking here. On that page you can view all the previously asked questions / answers / comments and also ask any new questions of your own.

The questions and answers page contains a large amount of additional information about plum tree problems.

Plant


The mechanism of planting an apple tree is relatively simple, it’s basically dig a large enough hole, drop the tree in to the correct depth and fill in with soil. Although a simplification, that’s very nearly it.

Even more important though is where to plant your apple tree, this will have far more bearing in the long term on its success or failure. Another important factor is how much support your apple tree needs in its first years and sometimes for its life.

KEY STEPS IN PLANTING YOUR APPLE TREE

Give thought to the following points before you plant your new apple tree, all are discussed in more detail further down the page:

  • Equipment required for planting – get it all ready before you start planting your tree.
  • When your tree arrives – get it planted as soon as possible (both bare-rooted and pot grown) but don’t plant in freezing or very wet weather.
  • Soil conditions – apple trees are reasonably tolerant of soil conditions but they prefer a free-draining soil but not sandy conditions.
  • Position – In full sun to partial shade out of the way of strong winds. Avoid frost pockets and if you can’t then pick your variety of tree carefully.
  • Spacing – one of the easiest mistakes to make and one of the easiest to avoid is to get the spacing correct from nearby plants and apple trees.
  • Protect from animal damage – rabbits, hares and deer can all kill your new tree stone dead in a matter of a couple of days so provide protection for vulnerable new bark when you plant a tree, see equipment required below.

EQUIPMENT REQUIRED

Before your tree arrives have the following equipment ready for planting:

  • A spade to dig out the planting hole.
  • A support post and a plastic / rubber spacer tie specially designed to attach newly planted trees to your support post. The support post should be reasonably strong (about 8cm / 3in) wide and about 150cm / 5ft high.
  • A heavy hammer or something similar to bang the post into the ground.
  • For bare-rooted trees, a bucket full of water.
  • Preferably a mulch to place around the tree when it is planted. This can be well rotted compost, bark chip or wood chip. A black plastic mulch can also be used, although make lots of holes in it to allow rain water to easily pass through the surface into the soil below.
  • Two people make the job easier and quicker although it’s perfectly possible for one person to plant a young tree successfully.

WHEN YOUR TREE ARRIVES

If you have more than one tree to plant then ensure that each tree is labelled to show which variety it is. Nothing is more annoying than having three or so apple trees arrive then unpacking them only to find out that you can’t tell which is which! Remember, one young apple tree looks much the same as any other apple tree.

Bare-rooted apple trees need to be planted as soon as possible after they arrive or when you bring them home. With container grown apple trees time is not quite so crucial but it’s definitely best to plant them as soon as possible. Plant on a frost-free day and when the soil is not frozen from previous cold weather. Don’t plant when the soil is very wet.

The British weather however is not always reliable and you may need to store your new tree for a week or so until the weather conditions are suitable. If you need to delay planting a bare-rooted tree then you will need to heel it in immediately it arrives until the weather is correct for planting. The principle behind “heeling in” is simple – get the tree into temporary soil which is moist and not frozen solid and store it there until the time is right.

Although the apple tree retailers almost insist on planting their trees immediately they arrive, and this is most definitely the best idea, heeling in is a well-established practice which will keep a bare-rooted tree in very good condition for at least a week and often more. The best way to heel in a a young tree is to dig a hole in some well dug soil adding lots of compost to break up the soil and warm it if frozen. Then place the roots of the tree into the hole and cover with the dug soil / compost. The roots should be covered completely with the soil.

It’s not even absolutely essential to keep the tree upright, it can be on its side, slightly pointed upwards with a support to keep it off the ground, just make sure that the roots are well covered with firmed down moist soil. Water the soil well and make sure the tree is well-supported. Later when you are ready to plant it permanently remove the top soil with your hands and gently tease it out from the remaining soil.

If you need to store a container grown tree then make sure the soil in the pot is moist and store it out of direct sunlight and away from strong winds. Against the outside walls of a heated house or in an unheated greenhouse is probably the best place.

NEVER STORE A BARE-ROOTED OR CONTAINER GROWN TREE INDOORS! The conditions inside a house will dry the tree out faster than you can say “I love apples”!

IDEAL SOIL CONDITIONS FOR APPLE TREES

Apple trees are generally tolerant of most soil conditions so it’s probably easier to describe what conditions to avoid. Most varieties do not grow well on light sandy soil (James Grieve and Fiesta are better than most though). Apple trees also do not grow well on water-logged soil.

Almost all other conditions are fine for apple trees including clay soil. If your soil is sandy or very heavy clay then mix in well some well-rotted compost or used multi-purpose to the soil you dig out to make the hole.

POSITION

A very common problem when planting apple trees is to position them too near other trees or plants. This sometimes only becomes obvious three or four years later when your tree is well established and very difficult to move. The size of an apple tree depends on four factors:

  • The rootstock is in most cases the key factor to the final size (height and spread) of your apple tree.
  • The variety of apple tree. In most cases, varieties grow to approximately the same size but there are a some which are well known to grow larger compared to others on the same rootstock. For example triploid varieties tend to grow larger than other varieties, two of the best known are Blenheim Orange and Bramley’s Seedling. Read up about any varieties you plan to plant and note if they tend to grow larger than  normal and adjust the spacing around it accordingly.
  • Growing conditions can affect the eventual size of your tree. In poor conditions, sandy and / or poor levels of nutrition, they well turn out to be a slightly smaller tree compared to one grown in substantial soil with high levels of nutrients.
  • Pruning obviously affects the size of a tree. Regular pruning designed to reduce the eventual size of an apple tree can keep its size to about three-quarters of a normally pruned tree. Remember though that pruning of this type needs to repeated for ever. If you forget to prune well for a year or two the tree will simply grow back to its normal size.

Established apple trees are more than able to cope with planting of bedding plants and other shallow rooted plants near their base. However don’t plant other apple trees, shrubs or deep rooted plants in the same area. As a rule of thumb leave an apple tree about one and a half times its maximum spread clear of other deep rooted plants.
The supplier of your apple tree should be able to give you a good idea of its maximum spread.

If this information is not forthcoming then some guesswork is required and you will only ever be able roughly estimate the space required. If you know the rootstock then a good estimate for spacing between other apple trees / large shrubs would be:

  • M27 rootstock – allow at least 3m / 9ft between trees
  • M9 rootstock – allow at least 3.6m / 11ft between trees
  • M26 rootstock – allow at least 4.5m / 14ft between trees
  • MM106 rootstock – allow at least 6m / 18ft between trees.

Note that the above are the distances between one tree trunk and the other, not the distance required between the final overall spread of the trees.

PROTECT FROM ANIMAL DAMAGE

Young tree bark, especially apple tree bark, is very attractive to rabbits, hares and deer to name but a few animals. If you live in an urban area, deer are unlikely to be a problem but in more exposed situations they can kill a young apple tree overnight.

Rabbits and hares are the easiest threat to deal with. Buy spiral tree guards and place them round the base of the tree trunk to protect from rabbits and hares. Remove the guards after a couple of years when the bark will have become hardened and unattractive to rabbits and hares.

To protect from deer damage you need to erect fencing / wire-mesh around the tree to prevent them getting anywhere near it. Do this immediately after planting if you have any suspicion that deer may be a problem.

PLANTING YOUR APPLE TREE

Before you start to dig the planting hole make sure your tree is fully hydrated. If it’s a bare rooted tree then place the roots in a bucket of water while you dig the hole. If it’s a container grown tree then water the container well before digging the hole.

Dig a hole which is slightly wider than the container or two to three times as wide as the bare-roots ball and deep enough to take either so that the tree is to the same depth in the container or as it was, if bare-rooted, at the nursery. Bare-rooted trees will have a soil mark near the base of the trunk showing how deep they were planted.

For container grown trees remove the tree from the container disturbing the roots as little as possible. Place the tree in the dug hole and and check that the surrounding soil will be at the same level as the soil in the container – add or remove soil as required to achieve the correct height.
Fill in the hole with soil firming it down as you go. Don’t apply too much pressure on the soil, just enough to ensure that any air gaps are filled with soil.

The same idea applies to bare-rooted trees but spread out the roots into the hole before adding soil. Place the tree to the correct depth in the hole (two people make this a lot easier) and gradually sprinkle on soil gently firming it down as more soil is added.

Finally water the soil around the tree very well. We recommend applying a mulch around the base of your apple tree but leave a gap of 3cm / 1 in or so of clear soil around the base of the trunk so that the mulch is not touching it. A mulch depth of 8cm / 3in and a spread of 1 metre / yard should be fine. It’s best to mulch a new apple tree after watering it and after the support stake has been put in place (see below, Supporting a New Apple Tree).

SUPPORTING A NEW APPLE TREE

Newly planted apple trees require support for the first couple of years until their roots are strong enough to support them. Some require support throughout their life, it all depends on the rootstock used.
The more vigorous rootstocks require only two years support and by far the most common of these is MM106 in the UK.

It’s interesting to note that a one year old MM106 rootstock tree can probably get away with being planted with no support at all (if pruned correctly) except in very windy conditions or on light soil. However the same tree planted as a two or three year old needs  support in the first couple of years. The reason is that the profile of a one year old tree is small and therefore wind resistance is minimal allowing it to grow sufficiently strong roots before it gets too large. A three year old tree however has a more developed branch structure and more foliage making it prone to wind damage in the first couple of years.

The slightly less vigorous rootstock, M26, needs to be staked for up to five years and maybe for life if conditions are particularly windy or the soil is sandy.

Next down the scale as far as vigour is concerned is the M9 which requires staking throughout its life. Finally the least vigorous rootstock commonly found in the UK is M27 which will require staking throughout its life.

The method of staking is the same whichever rootstock you have but of course a stake which is only required for a year or two can be of cheaper untreated wood whereas a stake for life should be treated to ensure it lasts as log as possible.

The stake should be about 150cm / 5ft high and 8cm / 3in thick and you should aim to have about 60cm / 2ft underground. We’ve shown a very basic diagram of how the stake should be placed against the tree but will add a real picture at the end of November when we plant our next apple tree.

Drive the stake into ground (a largish hammer is essential for this) to a depth of about 60cm / 2ft at a 45% angle so that it crosses near, but does not touch, the apple tree stem about 60cm / 2ft high above ground level. The direction of the stake should be into the direction of the prevailing (the most common direction) wind.

The reason for the direction of the stake is to ensure that when the wind blows it will tend to secure the stake further into the ground rather than blow it over.

Stake supporting an apple tree

Use a proper tree stake tie to attach the tree to the stake so that the tree trunk does not rub against the stake which would cause damage. Tying the stake relatively low down the tree trunk will allow some movement in the tree trunk which will encourage the roots to develop and support the tree better.