THE woodlands behind our house erupt into a marvellous sea of blue just about now. We had to look up what the flower is: Dame's Rocket. More exciting - it's edible! It's actually considered invasive, though hard to believe, as it looks so beautiful brightening up the woods. Only the petals should be eaten and we tried them in a salad. The flowers also pressed nicely and we look forward to using them for crafts when they are fully dried.