Albert Oehlen: 'There's something hysterical about magenta'

Fuelled by beer and speed, Albert Oehlen ran riot through the Berlin art world. He made intentionally bad paintings, worked only in grey, and was even anti-art altogether. Now’s he’s living the outdoors life in Switzerland – so why do his trees still look psychopathic?Albert Oehlen has filled the Gagosian Gallery in Mayfair with big paintings of trees. Oehlen’s trees are black, skeletal and deformed-looking, their thin curving branches extending beyond blocks of smeared m