Welcome Fadi!! Hanging my head here, we have 3 large pots of this one! When it gets leggy I just turn the pot on it's side over the recycle bin and take a scissors and
cut them back to the soil. A few weeks later it's back and happy!! If they are lucky
fertilize a couple times a season. I just toss them onto the gravel floor in the under
the shelves during the winter months. I have other green color Oxalis with pink white and purplish color blooms. Love them!!