|Why can't you find mum seeds or are they called something else?
|Mums are usually propagated by either division or cuttings rather than by seed. This is done to ensure that the varieties are "true" to name and also produces larger plants faster. Very small freshly started plants are occasionally available in the spring and will grow quite large by fall. If you want a large number of mums as inexpensively as possible it is also quite feasible for a home gardener to propagate them in quantity from existing hardy plants beginning in mid spring. Good luck with your mums!