Crinum asiaticum var. procerum? Here is a link that might be useful:

Most potting soil already has a good amount of sand mixed in. I start my seeds in 16 oz plastic cups from the grocery, poke a couple of hole in the bottom, and set them in cheap aluminum roasting pans so I can always keep an inch or two of water in there. Watering from below this way cuts way down on any seed rot and damping off. If you're using bagged potting soil, you'll need to add some some liquid fertilizer to the water a couple times a week. Just add a bit, so it all ends up 1/4 to 1/2 strength, and better to give too little than too much. When the little seedling are about four inches tall and four leaves, you can start setting them outside to get used to the sun. You can carry the aluminum trays in and out to a deck for a few hours a day, but I just put mine out in spot that is "full shade" for a couple of days, and move them to a spot in my yard that gets a few hours of morning sun after that. If you're south of Atlanta you've got plenty of time to start seeds and get them planted before the ground freezes. I recall Atlanta being very, very, very hot. Be cautious in Georgia about buying new daylilies from nurseries. Most nurseries down South have daylily rust, even if they have a spray program to control it, it can be in the plant tissue and show up in your garden the next year. It makes the foliage look crappy, and weakens the whole plant, and requires a spray program of two different fungicides to control. If you can possibly avoid it, do so. You can buy from northern nurseries where rust doesn't overwinter and you can grow from seed. Oh, and you can plant the daylily when it's 6-8 inches tall. I'm a very bad person, and I have had some seedlings in these cups that sat frozen in solid ice over winter and bloomed this summer. It was just pitiful. If you felt bad for Charlie Brown's Christmas tree, this would've made you cry.

As long as you're here and as long as you're looking for a top loader, I highly recommend the Fisher & Paykel. I don't use a lot of cycles or need fancy electronics, so we got the most basic washer they had that matched the most basic top-loading dryer. We have a family of 10, and also launder comforters, etc. in it. I don't think it's the largest out there in terms of capacity claims, but it does the job for us, and judges how much water to use based on the weight of the laundry, and, I think, how dirty the water is when it's running. Love, love, love it. It's the 2nd F&P set we've had. We had the other for several years in our previous home and didn't move it, because the temporary quarters we lived in while building had a set of its own (Which was a Whirlpool made Kenmore that we hated)...But we loved that previous F&P set also, and that's why we got a new set for our new house. This is the first top-load dryer, though, and I wouldn't want to go back after having it.

Alternanthera perhaps. Could you add another photo of the whole plant... with something to put the size of the leaves into perspective?