We’re not sure that your plant actually has a problem. From what we can see in the photo (and it’s difficult to be sure exactly) the browning appears to be on the leaves closest in line to the bottom of the plant. If this is truly the case, it is normal. The oldest leaves closest to the bottom of the plant eventually die as with most plants – they did their job and are replaced by new ones. Make sure you have it growing in full sun, that it is in a well draining soil, and water thoroughly when you do but don’t water again until the soil has dried out fairly well. Feel free to remove those dried up leaves and see if things don’t settle down after this first rash of die-offs. Contact us again if the observation we made is incorrect or if the problem persists – I think it should be o.k.