Roter Dreiecksklee, Oxalis triangularis, oder auch Roter Glücksklee genannt, feiert auf Instagram und Pinterest regelmäßig Klickerfolge. Woran das wohl liegt? Wieso sind Urban Gardener so begeistert von einer Zimmerpflanze, die völlig unkompliziert ist, blüht und sich unendlich mit Freuden teilen lässt. Ein Loblied auf eine pflegeleichte Topfpflanze für Fensterbank, Balkon und Ihren Urban Jungle.

Oxalis triangularis, so schön tanzt Glücksklee im Sonnenlicht

Roter Dreiecksklee is a particularly beautiful member of the wide-ranging Oxalis family (wood sorrel): You are probably familiar with the small, green-leaved lucky clover from the supermarket. Before New Year’s Eve, it is sold on pallets there, together with the chimney sweep or the lucky pig, and carelessly disposed of by ignorant consumers in early January. This lucky clover is also a thankful houseplant, albeit not as spectacular as its big sister, the red lucky or triangular clover.

Meanwhile, this surprises with its strikingly large, purple leaves and delicate, white or pale purple flower umbels. The special thing about it: the plant moves. In the evening Oxalis triangularis folds its leaves together and lowers them, in the morning it straightens up again and sets up its leaves like parasols and directs them towards the light. As it were, solar antennas, Oxalis leaves always look for the best angle to get as much light as possible, but without burning in the sun.

In the backlight, Oxalis Red Lucky Clover shows its most beautiful side

In the backlight, Oxali’s fine leaf drawing is particularly beautiful.

How is Roter Dreiecksklee / Roter Glücksklee cared for?

Red triangular clover is extremely easy to care for. The houseplant is always quite thirsty, but it reliably indicates its thirst and then leaves all the leaves hanging. So just take a look to know when it is time to water.
Of course, triangular clover needs fertilizer in order to grow vigorously and to stay healthy. If the plant grows in clay granulate (Seramis) or a Seramis-potting mix, fertilize every 14 days between March and October with Seramis fertilizer according to the instructions on the bottle.

Long-term fertilizers or fertilizer sticks are practical alternatives in case the plant grows in potting soil.

Tip : Remove faded things regularly and promptly.

Red lucky clover / Oxalis blooms so beautifully

Red lucky clover / Oxalis triangularis blooms so beautifully

How is Oxalis overwintered?

It’s simple: care for them as you would in summer, only with less fertilizer. You also have the option of taking Oxalis out of your pot in autumn and only hibernating your tubers / rhizomes in a cool and dry place. If the plant has its way, it will simply bloom through – for many months and even years.

Can Oxalis also take the summer freshness outside?

Yes. Glücksklee likes to spend the summer between mid-May and September in a partially shaded to shady sheltered place outside. However, as soon as the nights fall below 10 degrees again, you should bring Oxalis back into the warmth.

How quickly do oxalis / rhizomes turn into flowering plants?

Füllen Sie einen Blumentopf mit frischer Zimmerpflanzen-Einheitserde oder Seramis oder einem Mix aus beiden Substraten mit beliebigen Anteilen. Legen Sie darauf die Knollen/Rhizome und füllen dann noch einmal etwa 2 cm Erde/Seramis auf. Angießen und abwarten. Die Pflanze treibt in kürzester Zeit (2- Wochen) neue Blätter und bald darauf (4-6 Wochen) auch neue Blüten.

Tipp: Wenn Sie dazu neigen, Zimmerpflanzen zu übergießen, verwenden Sie einen Feuchtigkeitsmesser, beispielsweise den von Seramis. Achten Sie darauf, dass die Messzone unten unbeschädigt ist, sonst funktioniert der Sensor nicht und zeigt immer Rot.

Welche Blumentöpfe eignen sich für Roten Glücksklee?

Setzen Sie Dreiecksklee am besten in einen relativ hohen Blumentopf (Orchideentopf), damit die Blätter genügend Platz haben, sich auf alle Seiten frei zu entfalten. Aus demselben Grund sollten Sie der Pflanze auch genügend Platz auf einer breiten Fenster- oder Blumenbank oder auf einem Sideboard gönnen.

Mir gefallen weiße Blumentöpfe, weil sie neutral sind und sich prima in meine Zimmerpflanzenwelt integrieren lassen, egal welche Form der einzelne Blumentopf auch hat. Oxalis triangularis sieht aber auch in einem violetten Orchideen-Übertopf aus Glas sehr gut aus. Wenn Sie natürlichen Look bevorzugen: Ein hoher, schlanker Tontopf steht Glücksklee ebenso gut.

Welcher Standort ist für Oxalis triangularis richtig

Red lucky clover / Oxalis triangularis likes to be bright, but you should avoid direct sun. It burns the purple leaves quickly and leaves unsightly stains on them. West, east or north windows are ideal.

Red triangular clover, Oxalis triangularis, plant love with three corners.

Red triangular clover, Oxalis triangularis, plant love with three corners.

How is Oxalis triangularis propagated?

Red triangular clover is very popular, but is rarely offered in nurseries. If so, then at the beginning of the planting season between April and May. It’s good if you know someone who has an oxalis plant and is ready to give you a piece of happiness.
To do this, take the plant out of its flower pot. This works best when the substrate is moist. Now divide the rhizome into two (or more) parts with a sharp knife and pot each part of the plant in fresh substrate.

During this action, leaves will fall off, but that’s fine. The plant recovers quickly and then sprouts new leaves.

Alternative: cut back the leaves completely. Take the rhizome out of the pot and divide only the strong tubers / rhizomes. These look like small pine cones and also break quickly. Handle them with care. However, parts also sprout.

How did Oxalis / Shamrock become a national symbol?

Americans, Irish and English call Oxalis triangolaris shamrock . The plant is Ireland’s national symbol because, according to legend, it symbolizes the Christian Trinity. But even before Christianization, shamrock was said to have only good things, luck and many miraculous powers. Not only on the green island, but all over the world. Perhaps with a reason for its popularity in the urban jungle and on every wide window sill.

What does wood sorrel in the garden have to do with Oxalis triangularis?

Nothing! Garden owners are familiar with red-leaved wood sorrel (Oxalis corniculata) with yellow flowers from almost indecent weeds from the garden. I like to call it the plague – for good reason. To start with: Red lucky clover belongs to the same Oxalis family as the extremely annoying red-brown wood sorrel from the garden, but that’s where the similarities stop. The good news is: Roter Dreiecksklee is extremely well-mannered and ensures happiness and joy everywhere! Wherever it grows, a piece of real plant love thrives again