Ullswater was discovered as a chance mutation in a row of Windermere. It was a distinctive pure mid blue, shining like Ullswater on a warm summer afternoon when viewed from the top of Helvellyn. The plant differed essentially from Windermere in its colour, the flower size is slightly larger but the stem length and plant vigour are almost identical. It was such an outstanding individual plant we decided to take seed and grow it out again in 2020 to check whether the stock was uniform, which it has proved to be. We are extremely pleased to introduce Ullswater as offspring of Windermere which was a Bolton introduction in 2002.