Orange Tree: Planting And Caring For

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An orange tree looks great as a single plant on the terrace and balcony. Here you can find out everything you need to know about the warmth-loving citrus plant.

Orange trees ( Citrus × sinensis L. ) are popular exotic trees, which unfortunately can only be grown in pots in this country due to their sensitivity to frost. With the right overwintering, you can still develop many of the fragrant flowers and, with a lot of luck, even some of the sweet, orange fruits. Grown predominantly in subtropical and tropical countries, oranges are considered to be the most widely grown fruit in the world.

In fact, the orange is not a natural species, because the fruit, which comes from Asia, is the result of a cross between mandarin ( Citrus reticulata ) and grapefruit ( Citrus maxima ). We show you what to look out for when buying an orange tree and how you can optimally care for a citrus tree.

Buying an orange tree: what to look out for

You can easily buy orange trees in any garden center or nursery, but the following factors are decisive in the selection:

  • Size of the plant
  • variety
  • health status

In principle, smaller specimens can be purchased without any problems, as orange trees grow very quickly. When choosing a variety, you should definitely pay attention to whether you want a sweet orange variety or if you prefer a bitter orange. Bitter oranges are rather unsuitable for consumption but beguile with their strong floral scent.

An essential criterion when buying an orange tree is the health of the plant, which you should always check before buying. Check the plant for pests and diseased plant parts to ensure a long lifespan. In the case of oranges, it is always a good idea to choose a refined specimen, as this increases the resistance.

Plant orange tree

Proper repotting of the exotic plant is important for the lush growth of orange trees so that the roots can spread and new substrate can be supplied. But how do you actually plant an orange tree correctly and which location is suitable?

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Suitable location for an orange tree

As a heat-loving plant, the citrus plant needs special conditions for optimal growth. Specimens that are on the balcony or terrace should always be placed in full sun on the wall of the house in summer. South and westerly locations are therefore particularly suitable due to the higher solar intensity. When growing indoors, you should always make sure there is a light spot by the window. It is advisable to allow enough space for orange trees that are both indoors and outdoors. The Mediterranean plants can grow rapidly with the right temperatures and enough sun.

These tips should be heeded when choosing the right location:

  • Full sun location
  • For culture outside: south or west side of the house
  • In the case of culture in the house: a bright place at the window
  • Enough room to grow

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Planting an orange tree: instructions

When planting orange trees, there are a few things to consider so that the plant can grow well and develop flowers and fruits. The most important points are summarized below:

  1. The right time
    Repot your orange tree in February. Now the growing season starts and the roots begin to grow vigorously again. By repotting before the growing season, the roots can root through the new substrate faster.
  2. Choose a sufficiently large bucket
    Too small a tub often limits the growth of orange trees, so choose a suitable tub when repotting. As a rule, this should be a third larger than the root ball so that new roots can develop. Young orange trees are ideally repotted every year, older ones every few years.
  3. Choosing the right soil for the orange tree
    For the cultivation of citrus plants such as oranges and lemons, there is special citrus soil available in stores that have all the appropriate properties for growing in pots. If you choose a different soil or mix them together yourself, the substrate should in any case be permeable and not loamy.
  4. Plant the orange tree at a suitable height
    When planting the tree in the new pot, care should be taken to lay a thin layer of drainage at the bottom of the pot. This can consist of expanded clay or gravel, for example, and drains away excess water. Fill a few inches of soil over the drainage layer before planting the orange tree. After insertion, the cavities should be filled with substrate.
  5. Water the orange tree well after planting
    In the last step, you should water the newly planted tree vigorously in order to provide enough water directly. Nevertheless, be careful not to soak the soil completely with water.

orange fruits on the tree

Caring for the orange tree properly

Like many other citrus plants, oranges require a certain amount of care, especially during the summer growing season. We show what needs to be considered.

Orange tree: how often and how much water?

During the summer, orange trees require a large amount of water, especially when producing fruit. You should therefore water your tree daily and avoid the soil drying out completely. Low-lime water such as rainwater is best suited for this. You can then reduce watering considerably during the winter.

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Orange tree: when and with what fertilize?

Spring is a suitable time for the first fertilization of the year when the growth phase begins. Basically, fertilization is only applied over the growing season in summer; you should stop fertilizing in autumn. The use of commercially available citrus fertilizers, which can be added to the irrigation water, is an effective fertilizer. As a more ecological alternative to normal fertilizers, the use of organic citrus plant fertilizer or the use of a long-term fertilizer such as our Plantura organic tomato fertilizer is worthwhile.

Pruning orange trees: when and how?

Depending on what you’re planning to do, the timing and cutting technique will differ. For the purpose of a shape cut and to clear out inwardly growing and dead shoots, a cut in autumn is always recommended. Ideally, make the cut shortly before the winter dormancy period. Stronger pruning measures such as rejuvenation should be carried out in spring.

Orange trees can, depending on the purpose. cut at different times

When pruning orange trees, note the following times:

  • Form and clearing: end of the growing season (autumn)
  • Rejuvenation pruning: spring

With light pruning work in autumn, you can thin out the crown of the orange tree by removing dense shoots. So that the wintering tree does not take up too much space, it is also worth slightly pruning protruding shoots. A rejuvenation cut is advisable when the tree is becoming increasingly bare and hardly leaves any more leaves. Cut the plant back to a few stumps so that it can sprout again over the summer.

Successfully overwintering the orange tree

An essential aspect when dealing with orange trees is the annual overwintering, as the subtropical plant is not hardy. A temperature of around 10 ° C has proven to be ideal for wintering, temperatures above 15 ° C should be avoided at all costs. Temperatures that are too high require a lot of light from the tree, which unfortunately is not enough in the German winter. So choose a bright but cool place for your orange tree.

Temperatures of below 5 ° C can already be very bad for your Mediterranean tree and should always be avoided

A cool place should be selected for the wintering of the orange tree, but it should always remain frost-free. Temperatures below 5 ° C can be very damaging to your Mediterranean tree and should always be avoided.

At what temperature does it become critical for the orange tree?

  • Ideal temperature at 10 ° C
  • Not below 5 ° C or above 15 ° C
  • A cool and bright place

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