Whats the best lawn care after a good dethatch
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Looks like a great backyard you've got there. I'm sure the Workshop community can help get your lawn looking lush in no time. Let me tag lawn care expert @Adam_W for you to contribute to the discussion.
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Hi @Dark , apologies for not jumping in sooner. Been a crazy couple of weeks!
Best stuff after a de-thatch as a minimum is to feed well. I'd also look at an organic boost.
Use a quality slow-release fertiliser like Lawn Builder (use the organic one & you can skip the Seasol) and then water this in with a hose-on seaweed tonic like Seasol (you don't need the fertiliser boosted one in this case).
If you do have dips and bumps or the lawn feels a little spongy then consider top-dressing.
If doing small spots to just fill dips then you can just buy bags otherwise, if you need to get rid of lots of dips or sponginess, get a bulk, quality 80/20 (or similar) top dressing mix from a landscape supplier. This generally contains heaps of fine soil & organic matter (20%) and coarse, washed sand (80%). Just make sure you tell them it's for top-dressing.
If top-dressing all over then spread to a depth that gives you even coverage so it's just covering the grass and don't water-in. This can make the mix form a hard crust. Just let it naturally settle and once new grass starts poking through you can water well.
If your lawn area has had a lot of wear then do consider aerating. Best way to do that is hire a spiked-roller or a coring machine. You would aerate BEFORE top-dressing.
Hope this helps!