Estrella says all the designs are different and they are all hand-crocheted. The patterns are simple but colourful and are certainly eye-catching. The idea is for them to remain in place until at least the spring. "The orange trees were looking very sad ... and a bit neglected," say these ladies, and as their idea has had such a positive response they have now decided to repeat it but with different designs whenever there is an important event in the Soho district, such as the Goya award ceremony which is ... However, when Estrella and her daughter began, they had no idea that yarn bombing was so popular. "We decided to do it after a girl from a photography college showed us some photos, and we thought how nice it would be to do something like that," they say.