Xylella Another virulent infection with no cure striking fear across the world: Xylella.  Has dessicated 23,000 hectares of olive groves in S. Italy.  Now in France, Germany & Spain.  R rate of 19.  Spread by insects & infected plant imports.  520 UK species at risk, especially  olive, coffee plants, lavender, grapevines, cherry, almond, oak.  Early…