Wilma is commonly advertised and sold as "lemon cypress" or lemon-lime cypress due to the citrusy aroma of its foliage. And they are sold extensively as container plants as well as in most areas of the country, they are not hardy enough to be grown outdoors. As previously noted, Wilma IS a dwarf conifer although those examples are larger than I'd prefer to start with for a container. Growing in a container is a natural dwarfing process anyway so these should work for a number of years before becoming awkwardly too large for the setting.
These are massed produced for the container market so it is not uncommon to find discrepancies/variations in form and coloring. I prefer mine to be squatter, a bit plumper and more of a uniform yellow gold color from top to bottom.
gardengal48 (PNW Z8/9)