Black broom (Cytisus scoparius)

Shrubs that produce lots of flowers are wonderful, but if they are also resistant to diseases and pests, they are plants that will give us many joys from the first moment we have them in the garden or on the patio. One of them is the one known by the scientific name Cytisus scoparius.

Throughout the spring, its yellow flowers sprout so quickly and in such numbers that its small leaves are almost hidden behind them. And all this can be done in your home almost without receiving any type of care.

Origin and characteristics

Image – Wikimedia/ Willow

It is a shrub native to Atlantic Europe, also found in the Iberian Peninsula. It is popularly known as black broom or blond broom, and it is an evergreen plant that reaches a height of 1 to 2 meters, with a rounded and compact bearing. The branches are thin, green and with few leaves.

The flowers, which bloom from April to July in the northern hemisphere, are yellow or pink and take on a certain butterfly shape. And the fruit is a black legume containing about six to seven dark brown-black seeds.

What is your care for Cytisus scoparius ?

Would you like to have a copy but you don’t know how to take care of it so that it is well? Take our advice into account, and enjoy :


It has to be outside, in full sun. It does not have invasive roots, and as it does not take up much space, it can be planted without problems near other plants, pipes, walls, etc.


It depends on where you are going to have it:

  • Pot: To avoid unpleasant surprises when growing in containers, fill it with substrates that drain water quickly, such as a mixture of equal parts universal growing medium ( sold here ) with perlite (get it here ).
  • Garden: it grows in soils with good drainage, and if they are really fertile better. Anyway, if the soil in your garden is poor in nutrients, it is not a big problem either, since with a regular supply of compost it can be corrected.


As we said at the beginning, the black broom is a very grateful shrub, which also means that it does not need frequent waterings ; What’s more, if it were watered too often, its roots would most likely rot, since they can’t tolerate being flooded.

Therefore, it is very important, at least at the beginning, to check the humidity of the soil or substrate before proceeding to water again. How do you do that? It’s actually simple: you take a thin wooden stick, insert it as far as you can, and then carefully pull it out.

If when you extract it you see that it is more or less clean, it is time to water; But if a lot of dirt has stuck to it, wait a few days. Anyway, if you still have doubts, wait 2-3 more days.

By the way, remember that you should never water overhead, because if you do, the leaves and flowers could burn with the sun or rot.


Subscribing is especially necessary if you have a very worn soil, and if you have planted in a pot. It must be done during all the warm months of the year, using organic products if possible, such as compost, mulch, herbivorous animal droppings, egg and banana shells, etc.

You can use compound (chemical) fertilizers sold in nurseries (like this one ), but only if you want your plant to decorate. Likewise, you must bear in mind that you have to follow the instructions specified on the packaging to the letter, and that they can harm the environment.


Image – Wikimedia/ Gailhampshire

The Cytisus scoparius is easily grown from seeds in spring. The way to proceed is as follows:

  1. The first thing you have to do is fill a glass with water, and put it in the microwave for a few seconds, until you see that it starts to boil.
  2. Then, take it out and put the seeds in a strainer (like this one you can get here ).
  3. Now, put the strainer in the glass with water for a second, and then in another glass with water at room temperature. In the latter, leave the seeds for 24 hours.
  4. After that time, fill a pot with universal growing substrate mixed with 30% perlite, and water.
  5. Next, spread the seeds over the surface of the substrate, making sure they are as far apart as possible. Don’t pile them up.
  6. Finally, cover them with a thin layer of substrate, and water again.

Placing the pot outside, in semi-shade, and keeping the substrate moist, the seeds will germinate in about three or four weeks.

Planting or transplanting time

In spring, when the risk of frost has passed.


It can be pruned in late winter, removing dry, diseased or weak branches, and trimming those that are getting too long.


It resists freezes down to -8ºC.

What uses does it have?


The Cytisus scoparius is a shrub of great ornamental value, and can be used as a potted plant or garden. Whether in groups, alignments or as a solitary specimen, it is a very interesting species .


The flowers have diuretic, antiarrhythmic, cardiotonic and hypertensive properties. They are used to treat blockages of the spleen and liver, edema, high blood pressure, and arrhythmias.

What did you think of this plant?

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