Ask a Question
Notify Me On Question Update
Email this Question
What do the numbers on the fertilizer package mean?
Rate This FAQ
N-P-K. The first number (N) is nitrogen is an important element for leaf growth, color and development. Phosphorus (P) is used by the plant for root development and seed production. Potassium (K) is used by the plant for disease resistance, hardiness and sugars. Sometimes a fourth number may follow the third, indicating presence of another element like sulphur, iron or zinc. Federal and State laws require all fertilizer labels to represent the actual percentage of nitrogen, phosphorous, and potassium by weight. Thus, ammonium sulfate (21-0-0) contains 21% nitrogen by weight and provides neither P nor K.
Submit Your Suggestion
Other Questions In This Topic
- How do I prevent aspen sprouts from coming up in my lawn?
- I have an infestation of red ants in my retaining wall area where I also have plants. What is the best way to get rid of the red ants so I can weed etc. in that area?
- Do you test soil?
- Is it healthy for Kentucky Bluegrass to be kept at a cutting height of 2 inches if a reel mower (as opposed to a mower with rotary blades) is used?
- Why are the needles on my spruce tree turning brown and dropping?
- My vinca minor has numerous yellow leaves this year. My husband keeps dumping water on it, thinking it needs more since it is yellow and at some instances brown. Are we watering it too much, or is it missing a nutrient that needs to be added? HELP!
- Yesterday I applied "Scotts Turf Builder Plus 2 Weed Control" to my lawn. Unfortunately, I had the drop spreader set incorrectly. As a result I later discovered that I had accidently applied 4-5 times as much fertizer as specified on the bag. Will this damage the lawn? Is there anything I can do to prevent damage?
- I have a good number of my lawn customers that have a large amount of burmuda grass coming into their bluegrass lawns. I have use for 3 years a product call turflon ester, A Monterey product, containing Triclopyr at 61.6% at up to double the rate. I have been applying 3 applications per season with a backpack sprayer to spot spray the patches in the bluegrass. I am disappointed in my results. Please reply as to what to do to eradicate this problem as I think that is is very critical. I see it in most of the approx. 70 lawns that I treat. Where is it coming from??