According to a study by biochemist Etienne de Meijer (Inheritance of the Cannabinoid Phenotype), growers can induce environmental conditions such as light, temperature, nutrients, water, and soil acidity.
Different combinations and permutations definitely increases (or lowers) the levels of various cannabinoids such as CBD and THC ultimately derived from the grow.
That said, it is also currently true that the overall potential of each strain’s cannabinoid content is limited by its genetics.
The best way to take CBD is the way you prefer. Whether you use an oil sublingually, or ingest as an edible, or beverage, most all delivery systems including topicals like lotions, salves, and transdermal patches will work fine. The key is taking the required dose for that unique individual, and make sure that dose is a well-known, high-quality nano CBD product.