Been coveting one of these for a number of months: Euphorbia Characias It lives wild in a garden in my road, and grows out across the pavement. A few times, Iâ€™ve taken sly cuttings from the pavement side of their fence as Iâ€˜ve walked past the house, but they all promptly die! I've tried leaving the stem in water, planting it in wet soil, planting it in dryish soil, sandy soil, root hormone... to no avail! The damn plant just doesn't want to come and live with me! Any suggestions?