Eucalyptus (Eucalyptus)

Eucalyptus trees grow very fast

El eucalyptus It must be, by far, the most hated tree: it has very invasive roots, it does not let anything grow underneath or around it, it is capable of impoverishing soils, ... well, with these qualities, no one considers putting one in their garden.

But the reality is that it has an unjustified bad reputation, caused by the lack of knowledge of humans who decided to plant specimens replacing the native flora, without thinking about the consequences. Also, do not forget that it has medicinal uses. Here is your file.

Origin and characteristics of eucalyptus

View of eucalyptus flowers

Eucalyptus trees are evergreen trees or shrubs mainly from Australia and Ceuta. They belong to the genus Eucalyptus, which comprises about 700 species, which grow to heights of up to 150 meters, although the normal thing is that they stay in "only" 30 meters. The trunk is straight, with a light brown bark that comes off easily.

The leaves are of two types: the young ones are oval, but the mature ones are elongated. Both are grayish-green. The flowers are grouped in inflorescences, and are usually whitish.

Main species

  • eucalyptus camaldulensis: known as red eucalyptus. It is native and the icon of Australia, especially of its hot deserts. It grows up to 60 meters in height, with a thick and spongy bark, of reddish, gray, greenish and whitish tones.
  • Eucalyptus deglupta: known as rainbow eucalyptus, it is undoubtedly one of the species - if not the most - that attracts attention. It is native to New Britain, New Guinea, Seram, Sulawesi, and Mindanao. It grows to a height of 75m, with a multi-colored bark. See file.
  • Eucalyptus gunniiKnown as Gunn's eucalyptus, gunni or cider eucalyptus, it is an endemic tree in Tasmania that reaches about 37m.
  • Eucalyptus globulus: it is the common eucalyptus, white eucalyptus, or blue eucalyptus. Native to southeastern Australia and Tasmania, it is a tree that reaches 40 meters. See file.

What uses does it have?

Eucalyptus leaves are evergreen

Normally, in the blog's plant files we talk first about their care and then about their uses, but this time we will make an exception because it is eucalyptus, a plant that is usually looked at with bad eyes.

Medicinal uses of eucalyptus

What is of interest is the essential oil, which is extracted from the leaves. Is used as nasal decongestant, as well as for fight colds and similar illnesses. Today, it is easy to find pills, candies, syrups, etc. of these trees even in pharmacies.

In addition, it is also effective as a mosquito repellent.

Wood and paper industry

Being fast growing trees they are used a lot to make small furniture as well as paper.

Is it used to reforest?

Well, in my opinion… no. You have to think that, for example, in Spain they have been planting eucalyptus (Eucalyptus globulus in Galicia and the Cantabrian coast; and eucalyptus camaldulensis in the southwest of the peninsula) since the XNUMXth century. As we said at the beginning, These are plants that not only grow very fast, but also prevent others from growing alongside them. And that's not to mention that, if the conditions are right, the seeds germinate easily.

Apart from this, intensive plantations harm native flora and fauna, since it is known that in a monoculture there are a very low number of pollinators. Likewise, there are several studies, such as one published in Serralheiro & Madeira in 1994, which says that the soil is also affected, as it runs out of nutrients.

As if that were not enough, as the bark comes off in strips, in case of fire the fire spreads much faster.

Eucalyptus as an ornamental plant

Eucalyptus flowers can be pink

Does everything we've said so far mean that eucalyptus should be banned or, at the very least, concentrated in small areas? Of course not. But you have to use common sense, especially if we would like to have one in the garden.

If that is your case, then we will tell you what your care is:


It has to be placed outside, in full sun. Keep in mind that its roots are very invasive, so plant it at a minimum distance of ten meters from walls, pipes, floors, etc.


  • the garden: grows in all types of soils, except those that are permanently wet.
  • Flower pot: it is not a plant to have in a pot, not forever. Anyway, if you want to grow it there for a while, you can use universal growing medium.


Water 3-4 times in summer, and every 4 or 5 days the rest of the year.


It is not necessary.


Remove dry, diseased, weak, or broken branches in late winter.

Eucalyptus multiplication

It multiplies by seeds in spring.


Most species of eucalyptus resist frosts between -3 and -5ºC, but there are some, like the E. pauciflora, E.globulus, E. gunnii y E. subcrenulata, which resist up to -10ºC and even up to -20ºC.

The most beautiful, in my opinion, the rainbow eucalyptus, can only be grown in warm climates, without frost.

Eucalyptus is an evergreen tree

What did you think of this tree? 🙂

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  1.   Ivelisse Montalvo Cossio said

    I saw some rainbow eucalyptus trees and fell in love with them; her beauty is impressive

    However, they have stopped selling them in my area, because they are very strong and invasive; they raise walls, break water pipes, etc., a real shame

    I would say that they are basically trees of large areas, forests

    1.    Monica Sanchez said

      Hello Ivelisse.
      Yes, eucalyptus trees in general are for very large areas, or for large gardens 🙂


  2.   rodrigo said

    this tree has buttocks

  3.   Facu said

    Thank you very much for the information, easy to read and simple writing, start following the blog!

    1.    Monica Sanchez said

      Hello facu.

      Thanks a lot. We are glad that you liked the post.


  4.   Vicente said

    I have a eucalyptus
    gunnii that is drying out, no matter how much I followed the advice they told me when buying it, please what is it, I don't know what to do with it, I had another one that dried up and I don't know why, it's a plant that I like a lot, I hope it's in time to save it

    1.    Monica Sanchez said

      Hi Vincent.

      What exactly happens to him? And, what care do you give it? It is a tree that needs sun and humidity, but without overdoing it.

      One more thing, do you have it in a pot? If so, and if you have a plate under it, you have to drain it whenever you water so that the roots do not end up rotting.

      If you want, send photos to our Facebook in order to help you better.