help!

help!

Despite the fact that I'm domestically challenged, I've attempted to grow/maintain a couple plants around my house this summer for the first time. I've run into two problems: 1) I bought a Calladium plant and put it in a large cement pot on my front porch. When I planted it, I dug a hole in the pot (which already had old soil in it) and placed the root ball in it and filled it in with Miracle Grow potting soil. I was a little concerned that the pot wasn't deep enough (the space in the pot was about the size of a beach ball) and it looked as though the very tip of the rootball peeked out (I can see where all of the tubers join together). I've since tried to keep soil on the little part that sticks out. I live in Atlanta (zone 8 I think) and my porch is shaded, though it gets some direct light during certain hours. I check the soil almost every day, and when it feels dry I water it (usually every couple of days). I thought I was doing everything right, but brown spots have appeared on the ends of the leaves (which I've been cutting off) and some have turned light green/yellow and withered. There is a little growth at the root, but it seems most of the big ones are falling over/turning brown/withering. I know Calladium's aren't winter hardy, but it's August in Atlanta! How can I save this little guy? 2) I have a Dracaena corn plant tree-thing that has three different sized stalks. I keep this one in a corner indoors where it gets moderate-low sunlight. I planted it in a large pot with Miracle Grow potting soil, and I've watered it sporatically. Most of the leaves now have brown tips--which I've been cutting off. At first I thought maybe I wasn't watering it enough, but the soil still feels damp and I haven't watered it in a week. Any ideas?
Salut, salut!

Salut, salut!

My shelf plans for grow lights and seedlings

My shelf plans for grow lights and seedlings

Hibiscus

Hibiscus

Spring sprung very, very suddenly!

Spring sprung very, very suddenly!

Bluebells

Bluebells

Thought I’d share some color

Thought I’d share some color