Thanks for this great info... I've been wondering if our Blueberries were getting too much or too little... apparantly too little, we'll fix that now!! On a larger scale, we're scratching our heads as to placement of Orbit Brass Head Impact sprinklers on height adjustable tripods of 25'5 to 48 inches in our 190' x 95' rectangular garden... they cover a 90' diameter... can you recommend a layout plan as to where we can place them to maximise benefit please? We're new to small time farming, and this would help us tremendously. Thank you.