Answer: I wish I could examine the plant! It is normal for the oldest (inner) leaves to die out after 2-3 years but they are usually replaced with healthy new ones. Since your plant is developing new growth and is flowering, I suspect that's what is going on. Annual trimming will force growth on the inner branches as well as promoting new flowering shoots. The only other concern is the possibility of insect feeding. Check the inner branches for tiny webbing (spider mites) or scale or mealybugs. If you find none, chalk up the browning leaves to normal leaf aging. New leaves should develop, especially if you prune your Euryops back a little. Good luck with your plants!
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