Finnally ,a reasonable answer !
"jrstark" wrote in message
news:KrNgb.709983$uu5.117382@sccrnsc04...
Carolyn LeCrone wrote:

Why can't you use a preemergent killer meant for lawns in a flower bed?
My
local garden shop says no with no explanation.
Carolyn


Pre-emergents for lawns work by keeping seeds from weeds from rooting.
They start before grass does. If you use them on flowers, you will also
keep the flower seeds from rooting.

Janine