"If you’re planting a lemon tree in a large pot, be sure it has a hole in the bottom and that the soil has enough drainage so the water doesn’t pool up in the pot," says Ryan McEnaney ...

When repotting, incrementally increase pot sizes. For instance, a new lemon tree in a 3-gallon (10-inch diameter) pot should be transplanted to a 12-inch pot. Do not go too big all at once ...

Water until the pot is dripping from the bottom ... Avoid planting your lemon tree anywhere there's standing water after storms, too. Excess water can lead to root rot. According to Deborah ...