KB sod not filling in
 

Dick Shenary wrote:
Last summer I put down a 95% KB/5% Dwarf Fescue sod lawn. The lawn
appears to be healthy; a dark deep green and lush growth.

I expected all of the seams to be invisible by now, and a couple of
bare spots from dog urine to have repaired themselves. This isn't
happening.

Approx. 10% of the seams are still discernable and the dog urine
patches have yet to fill in.

Do these symptoms indicate a problem, or simply that my expectations
are too high?

Northern California, a mix of Sunset zones 7,8,&9, soil tested and
amended prior to the sod, no compacting.

Have you had decent rainfall there? Was the soil prepared a least a
little before the sod was laid?

Dick Shenary wrote:
On 19 Apr 2005 02:22:58 GMT, Steveo wrote:

Have you had decent rainfall there? Was the soil prepared a least a
little before the sod was laid?

Yes and yes.
In fact we had over our normal rainfall, and we worked hard to perfect
the soil beforehand.

Did the sod look good and healthy when it arrived? I'm only guessing
here, do you have a pic? (don't post it to this group)

"Dick Shenary" wrote in message
...
Last summer I put down a 95% KB/5% Dwarf Fescue sod lawn. The lawn
appears to be healthy; a dark deep green and lush growth.

I expected all of the seams to be invisible by now, and a couple of
bare spots from dog urine to have repaired themselves. This isn't
happening.

Approx. 10% of the seams are still discernable and the dog urine
patches have yet to fill in.

Do these symptoms indicate a problem, or simply that my expectations
are too high?

Northern California, a mix of Sunset zones 7,8,&9, soil tested and
amended prior to the sod, no compacting.

I'm not familiar with dwarf fescue, but tall fescue doesn't self repair. It
propagates by seed, not rhyzome or stolon. The only way to fill in bare
spots in tall fescue is to overseed or patch with more sod.

Dwarf is the same in that regard as regular fescue. I was noticing the
percentages you listed and am left wondering why this sod has fescue in
it to begin with. With 95% KB, it would seem to me that it would be
pointless to have 5% dwarf fescue, as it would be so overwhelmed by the
KB that it really wouldn't be doing much at all. Most mixes are done
to give a more balanced lawn that can then survive and look half way
decent when affected by diseases that hit one species, but not the
other.

As regarding the sod filling in, did you do a good fall fertilization?
Normally, I'd wait to put fertilizer down until its time to do the
pre-emergent crabgrass control at the same time, however with a new
lawn, I would do an early spring fertilization too, probably with a
starter fertilizer, as that is formulated to promote more root growth,
rather than quick greening with just nitrogen.