I agree with Michelle. The only way to evaluate a tc plant properly would be to grow the plant in it's natural division along side it to compare to. It would take more than three years to reach a mature clump from TC and be able to evaluate all the qualities. How would they evaluate the resistance to disease or fungus ect if the Netherlands did not have the same environmental elements as the US. Even here in the US there are variances in one area to the next. This could explain why some people love dl ABC while the next person says it is wimpy and just doesn't do right after several years they toss it out.