Answer: Transplant shock is the most likely cause. Brown leaf tips and edges are a sign of a "plumbing problem". Lack of water, too much water (which can also kill roots), damage to roots in the planting process, and fertilizer burn from placing fertilizer in the planting hole can all cause such symptoms.
Keep the soil adequately moist (but not continually soggy) by giving the roots a good soaking once every 5 to 7 days until the weather cools in fall. The plant should pull out of it and be fine.
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