NPK – What does it mean? Why is it important for your lawn?
Knowing why NPK is important will help you to understand how you are helping your lawn when you fertilise.
For the most part though, if you use a good quality fertiliser suited to your turf, your lawn will thrive.
Lawn Fertilisers come in many varying types and blends. It can be quite confusing as to which is the right option for you. Grass is like any other plant – It takes nutrients and air through the soil and sunlight through the leaves for photosynthesis. This process is where the conversion to sugars and energy takes place. It is the job of lawn fertilisers to keep this in balance and help provide the nutrients your lawn lacks.
The three numbers on the side of your fertiliser represent the value of the three macro-nutrients required for your lawn.
These three macro-nutrients are N, P, & K.
Let’s break it down…
Nitrogen is largely responsible for the growth of leaves and is the most talked about nutrient when it comes to lawns. It is usually the highest percentage of your NPK ratio. Nitrogen usually comes in the following forms: Ammonium, Controlled release (synthetic) and Urea.
Lawns love Nitrogen. But, it is important to strike a balance between strong leaf growth and strong roots capable of supporting it. Which is where Phosphorus comes in.
Phosphorus is largely responsible for root growth and is actually quite a low percentage of the overall NPK ratio. Phosphorus moves slowly through the soil. It isn’t used in great amounts by your lawn, so some is needed but not a great amount.
Phosphorus usually comes in the following forms: Water Soluble, Citrate Soluble and Citrate Insoluble.
Potassium is a nutrient that helps the overall functions of the plant perform correctly. Potassium is an essential macro-nutrient used in the largest quantities by plants for vigour and growth. Potassium comes in the form of Sulphate as soluble potash which helps grass withstand drought and disease. It also helps the plant to more efficiently use Nitrogen.
By understanding how these nutrients effect the overall health of your lawn, you will be better equipped to identify deficiencies in your lawn and the tell-tale signs of stress. All of this will help you know when it’s a good time to fertilise.
For information on caring for your lawn visit our Lawn Care Page.
Specials and offers
Join our mailing list for great specials and top turf tips
Product arrived with good grass growth and a nice root mass. Please pass on my thanks to your team.
- John, Jim's Mowing, Kiama
Turfco did an amazing job at my place and now I want to repeat it!
- Reece, Hyams Beach
Jed and his buddy are wonderful. You guys are a real credit to Turfco.
- Robyn, Greenwell Point
Thank you Marcus & Joe for such excellent customer service. Marcus gave us good advice on what turf to use and had no problems coming to offer his advice a second time to help us keep to our budget. Joe and his team were polite, friendly and efficient and did a terrific job on our very large backyard. It looks amazing. We've mowed it twice now and it looks like it has been there forever.
Thanks Marcus! I have to say you and your team are one of the most professional trades I have come across and the lawn looks great!
- Belinda, Greenhills Beach
On behalf of our club I wish to pass onto yourself and Turfco are sincere thanks for your generosity with the recent supply of turf to Ray Robinson oval. This has assisted our club immensely with the upkeep and preseason preparation to our ground. Again we say thanks. We appreciate your support.
- Fernhill Soccer Club
We were very very happy with the service we received, everyone we were involved with were courteous, polite and professional. Would definitely use your company again in the future.
- Karen, Mt Pleasant
Thank you so much for your professionalism and attention to detail with the supply and installation of our Sir Walter at our newly built house. It has totally transformed the look of our home and has provided the finishing touch it so desperately needed.
- Tim McGoldrick, South Nowra
Fantastic , I bought it online Wednesday and it was delivered to my door on Friday, doesn't get any better than that. Thanks
- Warwick, Goulburn
Thanks very much for the photos! The area is looking excellent - a huge improvement on the original !! I appreciate all your team's efforts and hopefully we'll be able to successfully maintain the turf until it is well established!
- Lile, Keiraville
I would just like to thank you and particularly Jed and Jamie who worked their butts off today, and have done a fantastic job turfing our front lawn. Your whole operation is totally professional and we could not be more pleased with the end result. Thanks again.
- Tony & Kay, Sutherland
Just wanted to thank you for the great product excellent service and the most professional experience we have had so far with our renovation. Josh and Joe were fantastic. Please feel free to use us as a referee to other potential clients, they won't regret it.
- Victoria & Gary, Illawarra
The new lawn looks great! Thank you very much the boys did a top job.
- Matt, Wollongong
Both Marcus & Joe are very professional and know exactly what they are doing; their friendly personalities and workmanship makes them a credit to your company.
- James, South Coast NSW
Thank you for a quick and professional job at our school.
- Mark, Warilla High School
Just like to say a big thanks to Marcus Josh and Jed, all very professional, courteous with nothing being a problem, a job well done and another happy customer,will not hesitate to recommend you guys.
- Kevin and Florence Handford, Port Kembla
I just want to thank yourself and Marcus for everything and to the guys that did the job, they were fantastic and did a great job.
- Melinda, Renwick
Just a quick message to say a big thank you to the driver who delivered the Turf on Saturday. He placed the turf in positions that made it easier for our guys to lay the turf. Thanks again.
- Ann, Surf Beach
Joe, Scott and the team did a great job yesterday and despite having all four seasons during the afternoon, we smashed the turf laying records and got the job done.
- Jeff, Kangaroo Valley
Hi Marcus , just to let you know that the boys and yourself are a credit to your company. Their work ethics are second to none. Thank you.
- Mark, Lake Conjola
Hi Marcus & Jed, thanks again for your work, we really love our lawn!
- Gary, Berry
These guys were awesome! Nothing was too much to ask, Thanks guys
- Susan, Tapitallee
Nathan, Josh and Brendon were a delight to deal with and did a fantastic job.
- Patrick, Illawong
Thank you for the great job your guy did on Wednesday. I recommend you guys to everyone. Thanks heaps!
- Mick, Lake Heights
Our lawn is looking great, I'm really happy with it; I never thought I would be a lawn person but turns out I am!
- Mick, West Wollongong
Just a quick note to thank your guy for a great install - we had the perfect weather for laying (rained all day !!!) Looking a treat and I'll be in touch for more just as soon as this lot is established.
- Michael, Tallong
The boys who laid the lawn were AWESOME . .. very polite , worked hard and more than helpful with instructions for care.
- Bronwyn, Vincentia
Thank you for your help in the installation of our new turf – I am really happy with it and amazed at what a difference it has made to the backyard. Your company made everything so very easy, I will certainly be recommending you. If ever I need turf laid again Turfco will be the first company I turn to.
- Margarethe, Shellharbour