Not sure about a sprinkler, but if you have a soaker or drip hose, I was told to let it go for 3 hours at a time every 3 days. So far, that has been more than ample for the established plants, and we've seen some very good growth. It was also enough for our second round of corn seeds to sprout and grow to 3 inches in the first week of planting!
My grandmother also told me long ago that veggie gardens would rather have lots of water all at once than sips here and there.
My grandmother also told me long ago that veggie gardens would rather have lots of water all at once than sips here and there.






