Kentucky BlueGrass

[RazorsEdge]

So far I've done the dethatching in March.
I then put down some Spectracide weed killer to take care of the dandelions. I applied a round of 10-10-10 lawn fertilizer in May.

My observations so far is different areas are darker than others. I've also found areas of Clover, which from what I have learned is, the grass is lacking nitrogen. So, short of doing a soil test, which fertilizer?

 

[Lubener]

I would apply a starter fertilizer and spot treat the clover. The grass should be cut at a height of around 3.5 inches. A thick lawn cut at the proper height and no more than a third of the grass cut off during mowing should keep the clover and weeds in control..

 

[97prizm]

So far I've done the dethatching in March.
I then put down some Spectracide weed killer to take care of the dandelions. I applied a round of 10-10-10 lawn fertilizer in May.

My observations so far is different areas are darker than others. I've also found areas of Clover, which from what I have learned is, the grass is lacking nitrogen. So, short of doing a soil test, which fertilizer?

Kentucky Bluegrass likes a high nitrogen slow release formula in the 12-4-8 range. Not sure of your location but Kentucky Bluegrass needs high humidity as well. There are some Bluegrass hybrids that use less water than the regular varieties. A couple of websites that specialize in Kentucky Bluegrass recommend (I some cases swear by) summer guard or Scotts triple action.

 

[shortyb]

This is my all around fertilizer:
https://andersonshomeandgarden.com/shop/products/pgfcomplete

It will be kinda tricky this time of year with a cool season grass to try and eliminate weeds. Did you use a pre-emergent? I get the best results with a selective herbicide when the weeds are active but, the lawn is still dormant. 2 that I like are:
https://www.domyown.com/q4-plus-turf-herbicide-p-1930.html
https://www.domyown.com/image-allinone-lawn-weed-killer-concentrate-p-26926.html

Humic and Fulvic acid are good bio-supplements and either core aeration or surfactant aeration to lossen compacted soil/clays. Oh, and water. Water, water, water.

 

[Donald]

If you don't mind clover it actually makes nitrogen for the soil.

Forget most of the products at Home Depot or Lowe's with a few exceptions.

Grass seed (Barenbrug in yellow bag, may need to order) at Home Depot is excellent and a reasonable price.

Lesco fertilizer.

Andersons fertilizer, order from Amazon.

I have settled on T-Zone for broadleaf weed control. Order from Amazon and spray front pump or backpack sprayer.

Keep in mind when using a granular weed & feed that the weed killer needs to stick to the wet weed leaves via rain that has stopped or heavy due. Is does nothing if it falls on the soil.

Proper pH allows the grass to grow better and fertilizer to work better.

Nitrogen when unused by plants is carried by water as it seems deep into the earth. So a slow release is best.

Unless you have millions digging dandelions is pretty easy. They are not easy to kill with weed killer. Can take 2 or 3 hits with spray weed killer. They have a tap root that can go down 6 or 8 inches