Use of Grass in gardens
The grass had weed & feed applied in April. Can it now be used in an organic garden?
Boulder County Colorado
Please take a look at the section of this link regarding glass clippings. It recommends waiting at least 4 weeks. You might also like to call the 'help number' on the herbicide that you used to get their recommendation.http://www.ext.colostate.edu/mg/gardennotes/245.html
Your question poses other questions/thoughts. The current recommended philosophy on grass clippings is to compost them (and hence their nutrients) back into the lawn. (That being said I do collect mine as I need it for my compost pile.)
You also asked if you could use your clippings for an 'organic garden'. This opens up a larger question as to what definition/source you are using for 'organic'. Perhaps you could research the type and ramifications of the herbicide you used on your grass when/if you call the manufacturer.
Hope this helps,
Colo Master Gardener