Weed killer and grass grow

[aporschefan]

Been working on a major refurb for the past 2-3 years and have neglected the front garden. Unfortunately, the builder wrecked the back garden completely.

What's the best product to treat weed and feed grass. (Lots of patches)

Shall I just search for the product with the best rating on amazon and go with that? Or are there separate products for each that would yield better results?

Thanks in advance.

[dhutch]

aporschefan said:

Been working on a major refurb for the past 2-3 years and have neglected the front garden. Unfortunately, the builder wrecked the back garden completely.

What's the best product to treat weed and feed grass. (Lots of patches)

Shall I just search for the product with the best rating on amazon and go with that? Or are there separate products for each that would yield better results?

Thanks in advance.

Just on the '2019 Lawn Thread'

Else here is an extract from when I asked a similar question.

Summary is that while the '4in1 weed and feed' packs do what they say, for most applications you are better feeding separately to the weeding, which allow more flexibility to target areas of weed without applying it to the whole lawn. You can the add lawn seed to 'over seed' and thicken a thin lawn.
One of the draw backs to the 4In1 being you can apply to new lawn, or before over-seeding.

jagnet][For lawn feed said:

How often per year do you want to be applying fertiliser? Are you on a clay or sandy soil? How often do you want to be cutting the grass?

The Scotts Lawn Builder lawn food is a 22-5-5 NPK fertiliser, slow released over 10 weeks. It also contains a small quantity of iron for additional greening. It's relatively low in Potassium versus Nitrogen. Slow release over 10 weeks means you're looking at applying 4 times per year and overall you'll be applying quite a lot of Nitrogen, certainly at the very top end of recommended quantities even with a lower Nitrogen autumn feed - that's going to mean strong growth and much more cutting.

For smaller lawns then I don't think you can go wrong with Lawnsmith's offerings. I see that they now have an organic based one - Spring and Summer Natur Fertiliser - 18-3-8 with seaweed and Magnesium, slow released over 3 months. Unless you're on very poor soil and trying to establish new grass (from scratch or overseeding), I think that'd be a great choice for most lawns

[For weed killer]
Any good garden centre should stock iron sulphate / sulphate of iron / ferrous sulphate - it's a very common garden product. For lawns they may also stock "lawn sand", which is iron sulphate with fine sand as a carrier to be applied dry.

For selective weed killing then Resolva and Weedol (Verdone) are both widely available and effective. They have slightly different active ingredients so the usual suggestion is to have both and alternate, that way even the most stubborn broadleaf weeds should succumb. For Yarrow specifically, Resolva will be the better choice but it may require a couple of applications. Apply on a dry day when the weeds are actively growing. Avoid applying if rain is forecast within 12 hours to give the product time to be absorbed.

[aporschefan]

Sorry for the delayed response. Thanks for the detailed reply. Products ordered.