Besidess the obvious difference in environments, you have to forage issue. Our grass gets growing pretty well by nid marxh and really hits it' stride in april and may. By late may it's beginning to slow down. June-august there is almost nil growth. MEarly to mid september it starts again for about a month then then slows down to the point that all there is available is stockpiled grass. If it's left ungrazed there will be very slow growth during a lot of the winter. But if it's been grazed once, that inch or 2 of growth during the winter doesn't account for much.
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