Answer: With a little observation you may find that there is a difference in the growing conditions that will account for it. Since this was a very dry year I would bet it is a difference in the amount of water they receive. Possibly the drainage pattern directs more water to the end where things grew better. If you use a watering system, possibly the delivery or pressure is uneven or if you fertilize with a hose end sprayer perhaps it is misfunctioning and applying it unevenly. There is very likely an explanation to be found with a little detective work -- in the meantime, yup, that's weird!
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