Do I have to water these in?
Not necessarily but it is highly recommended! It is always best to check your product's label for its specific recommendations. These products can be taken in by plants via foliar activity or through the soil so watering doesn’t really make too much of a difference. But as we always say, “don’t make a mess!”
So feel free to spray and pray all day… but if you are spraying products with iron in them (which can stain) then don’t spray during a heavy rainstorm… you’re just asking for a mess everywhere! Other than that, be logical.
Also, as a general rule, the products with nutrients like 7-0-0 GreeneEffect and 0-0-2 MicroGreene are going to do better absorbing via leaf tissue whereas Humic12 really needs to get to the soil so water it in. This is why we always recommend reading and following the recommendations per the product label.
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