Thanks Johnny for pointing that out (seedlings sold as named variety). One nursery that sells through Home Depot sells macadamias labelled as "Cate". In the small print on the label it says "seedling". It is a shame that a professional nursery would sell seedlings with a known varietal name. After 10 - 12 years of care for that seedling you do not know what you will end up with. After 12 years and you have poor crops, deformed nuts, etc. then what? As an experiment, growing out a seedling can be informative, for better or worse. There is a reason credible nurseries sell grafted trees: predictable results. A farmer would not make an investment in a grove of seedlings with unpredictable results. To graft a macadamia requires girdling the scionwood months ahead of cutting to obtain good results. That little grafted tree will be more expensive than a seedling. 4-5 years later with the grafted tree you should begin to see production. Double that time with a seedling and add in water and care. Then what? Fortunately nurseries do not (yet) sell seedling apples, oranges, plums, etc as named varieties. It would be easier and cheaper to just plant a seed and label the plant as a Red Delicious, for example. As in most things in life, you make a choice. A seedling is a bad one.