To further expound on Connie's statement, so if something is marketed as a strain, the parents will vary but they will be grown from seed and have a large degree of similarity between seedlings. That's why if you order three bulbs from a strain, there will be slight differences between the bulbs where if you bought three bulbs of 'Giraffe' you are getting the same exact plant and the only variability would be due to growing conditions, not genetics.
