Question

Assume that a friend recently moved away and had to find homes for his houseplants. You took the purple passion plant, but it needed to be repotted and thickened. When you went to a store for some type of plant food, you were confused as to which to buy. Before leaving, your friend had suggested Solution C. You also bought Solution B because the description on its box sounded good, but the shopkeeper said Solution A was best. To see which worked best, you took 20 cuttings of the same size from the original plant and after soaking them in water for a week, placed them into 4 groups as follow

Answer 1

Group 1- potting soil and distilled water
Group 2- potting soil and nutritional solution A
Group 3 - potting soil and nutritional solution B
Group 4 - potting soil and nutritional solution C
Question - To be scientifically reliable, the experiment must be repeatable by anyone who is interested and wishes to try it. How would you ensure that this would be possible?