I recieved my iris collection yesterday and need to plant it. There are 15 different varieties in the collection. I was talking to a friend of mine today, and she said I needed to plant the different types away from each other, so they do not cross pollinate.
My question is.... Is this true? If so, how far away should I plant them from one another. I have grown iris's before but they were of the same type. So I am stumped! Please help!!