Answer: Berberis thunbergii 'Concorde' is a petite plant, growing slowly to mature at about 18 inches tall and wide. It is extremely heat tolerant, rated into heat zone 8 with up to 120 days per year at temperatures over 86 degrees. It does well in full to partial sun. Your local nursery staff should be able to tell you more specifically what to expect depending on the growing conditions where you plan to plant it in your yard.
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