When is safe to put feed and weed on new grass?

Question

i sewed some grass seed it as come up i have now cut the grass three times but there is a lot of weed and i was wondering if i put weed and feed on will it hurt it as it is new grass

Answer 1

I think if your grass is less than 6 months down, I wouldnt chance it until the autumn. There is a Spring & Autumn feed available. However , it will tell you on the packet to be absolutely sure.

Answer 2

It is generally recommended to wait until your new grass has had 4 mowings.  So you are almost there!

Be sure that your grass is wet before you put the weed and feed down---so that the weed killer part of it will "stick" to the weeds.

You should probably see wilting on the weeds within 18-24 hours, and they will be dead within a week.

Don't put the weed and feed down, if rain is expected within 36 hours.

The fertilizer part of it does need to be watered in....so water the whole lawn area very well after the weeds begin to wilt.  2 days after application is probably the best time.

Good luck!

Answer 3

It only kills the weeds.,that's the idea of it.

Answer 4

Yeah but be careful, if it doesnt rain within 3 days make sure you water it in or it will burn

There is a lot of Lawn weed feed and mosskiller about make sure you do not get that, the Sulphate of Iron as the Mosskiller doesnt half burn

Lawn weed and feed is safe to put on nearly at anytime but obvioulsy its a waste of money putting it on when the grass isnt feeding especially between November and April  

Answer 5

You should allow your new grass to establish roots first before applying feed. Most feed has Nitrogen content which can burn grass when young.

Nitrogen content feed requires lots of water so it can reach the soil. Any content remaining on the grass will burn it. You can apply weed yet read the instruction as to content and application, since there are a variety of products to kill weed - all have their own nitch.