Warmth and protection – just what most of us need, plants too – but sadly now that the warmer weather has arrived, plants growing in the protected environment of a greenhouse or conservatory are especially likely to suffer attacks from a whole host of pests and diseases. If you want to get on top of the situation it is essential to act promptly, and what better way than to try to tackle some of the more common pests using biological controls? They work well, provided you have not been using chemicals in your greenhouse or conservatory too recently, and can…