My sad conclusion is that there was insufficient horticultural research done prior to installing the grand succulent garden. This cost taxpayers time, money, and potentially wonderful plants. On the other hand, if your wholesale succulents purchase is massive - for example 4,000 plants - the individual trays may contain less variety and you should definitely look online. By purchasing plugs you are also making the decision to eventually plant them. You need to make sure that the water drains quickly from your pot in order to avoid any unwanted effects.