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it looks like you're not far north, so plenty of time left for seeding. We're in berkshire and will be seeding until around end of october. it would be good to aerate before seeding as well. no need to wait re feed/moss control. just make sure no weed control. our order would be scarify multiple passes, aerate 2 passes, feed/moss granules, overseed.
I'd scarify and seed it now with a pre-seed fertiliser (no iron). Then return in Dec with a liquid iron treatment to control any residual moss.
There is no reason not to use iron. It will not affect germination. Always treat for moss after you scarify
we have a winter grass seed which is a ryegrass bred to germinate at lower temperatures, but normal seed will be fine for a while yet where you are. Avoid the FWM - the weedkiller will be of limited use - much better to mosskill, scarify and overseed along with a pre-seeder/ new seed fertiliser ...
I wouldn't even think about it... I've seen the results of this from Greenthumb. You'll end up with an absolute mess for the next 6 months...... if you put a mosskiller on, it will look even worse with black areas where any moss remains after the scarifying. The way I look at it is that at least the moss green and from a distance away, will not look too bad. You may well get some germination but only if you're lucky with some warmish weather.... even so, it will probably look fairly sparse. The "new" grass, if it germinates, will end up a different colour/length from the old grass.... believe me, the customer will wish it hadn't been done. Leave it to the Spring
Geoff are you a lawn care professional? I'm interested in your comments as they are not in line with my experiance on lots of lawns and that of many other lawn care professionals - what are they based on? Seems like bad advice to me
Hmm, don't agree with this - it's far better results to scarify in the Autumn (sep and oct) and not rely on rain / weather late spring for recovering if spring scarify. We do both, but try and steer people to autumn.
+1 - if you don't scarify you can't get good soil contact for the seed onto soil and if you take chances with spring weather for re-seeding it will look a mess well into May when people start using their lawns and are outside more. Grass seed needs approx 8 degrees or above to germinate which is easily achieved in most southern counties well into October and beyond. Plus if you overseed (after thorough scarification) then you'll blend the new seed with the existing grass...never just do patches for this very reason....
Thoroughly recomend Progreen patch repair seed, it's been germinating really well over the last few weeks and I did another small lawn today which I'm confident will be starting to look great when I return in a fortnight.
If it's a relatively small area I think its well worth doing it in Autumn then, if on the off chance, it doesn't work you can have another go in Spring for the cost of a little more seed.
i have been educated to treat the moss before scarifing otherwise you spred the spores back into the lawn it also makes it easer to scarify