Hi, the numbers that describe the NPK values are a percentage of the actual mix you're holding in your hand. A 10-10-10 mix is the same as 17-17-17 except it is not as concentrated. The ratio between numbers gives the gardener the ability to increase one or more nutrients and less of another. A good soil test determines what is needed. Hope this helps.

jbann23
Thanks that does help! do you think the store bought soil kits are accurate?

do you think the store bought soil kits are accurate?

No, sorry. ;) Search 'soil test kits' here at GW for many discussions on them. You can get a professional soil test done via your local county ag extension office - usual cost is $10-15.

That said, since you are using a soil-less mix in your beds the value of even a pro test will be questionable. Soil-less mixes are great for growing but have little or no natural nutrients in them - it has to be added. Instead of a liquid that leaches out of the bed readily, consider going with a pelleted time-release fertilizer - several brands made such as Osmocote - mixed into the soil before and after planting. It gives you a more consistent and steady feeding.

Just some thought to consider. ;)

Dave

Dave
Thanks thats what I,m go to do