hi alan
I am not sure if your mallow is the same as the one I have but I planted it last summer and mine self
seeds itself........and this
spring I had quite a few babies popping up around the original
plant location. (The original
plant did not grow back.) So my advice would be to let it
seed before cutting him down.
I recall having one baby mallow start late last year from the
seeds and this year it is about 3 feet and already blooming where as the other
seedlings that just started are only about 1 foot so far.
Not sure if that is the normal thing or if it was just a fluke that it survived because we had such a mild winter this year.
In any event let it
seed and see what happens
Good luck
Laurie