James wrote:
The original poster didn't ask if WE LIKE GRASS !! He asked if
it was ok to plant it in an area that has some pea gravel on it.


It is none of our darned business if he wants to plant grass, so we
should't lecture him on reasons why HE should not plant grass on
HIS property.

To the OP: I would try to spread a minimum of 2-3 inches of
topsoil on the area, if that is feasible for you. That would give
the grass a better chance to grow and spread. As long as the
existing gravel is "mixed" with some soil, the grass will grow,
but adding a few inches of topsoil would give you a quicker and
more pleasing result.

After the grass has taken hold and doing fine, you might add a few
more inches of topsoil the next year, and before you know it, you
will not be able to tell the gravel was there.

Good Luck !!

--James--

He would be better off to till that topsoil in to a depth of 6 to 8
inches.

--

Travis in Shoreline (just North of Seattle) Washington
USDA Zone 8b
Sunset Zone 5