On 6/20/2009 2:42 PM, mattyd wrote:
yep, shoots - sorry





Mowing the shoots will eventually starve the roots underneath them.
This will work only for shoots from the roots of the trees that were
removed.

Alternatively, you can use Roundup or some other herbicide if there is
no desirable plants right next to the shoots. Roundup will move through
the shoot and kill the roots; mix it a little more dilute than the
instructions indicate so that it doesn't kill the tender shoot before it
can reach the roots. This will work on shoots from roots both from
trees that were removed and trees that are still standing. For the
latter, the trees themselves should not be harmed because only roots
near the treated shoots should be affected. (In many cases, roots send
up shoots only when the main tree has been killed, in which case
standing trees will definitely not be affected.)

Twice, I've had trees removed from my garden and then had to fight
shoots from the roots for several years. I couldn't always use an
herbicide because the shoots were coming up right in the middle of
desirable plants. I had to pull the shoots because they were not were a
mower could be used.

--
David E. Ross
Climate: California Mediterranean
Sunset Zone: 21 -- interior Santa Monica Mountains with some ocean
influence (USDA 10a, very close to Sunset Zone 19)
Gardening diary at http://www.rossde.com/garden/diary