Hi there, I am one of those professional plant people, and I deal with dracaenas a lot. I had a long chat with the wholesale greenhouse lady where I buy my plants about dracaena marginatas recently. She told me that when they are grown in Florida, they grow them under very high light with lots of fertilizer, so that they grow fast. Time is money, the faster they get the plant to full size, the sooner they can sell it and use the space to grow another one. With all of this light and water, their leaves are very firm, to the point that they can give you an extremely painful poke in the eye, like being poked with a stick (don't ask me how I know this...) A plant will keep these stiff leaves for several months after being put into its office location. If the light is very bright, the leaves will stay stiff. If the light is dim, they will gradually start to droop over time. Once they droop, I don't think they can get stiff again, at least not those particular leaves. The droopy plants that you see the plant company caring for probably only need water every two to four weeks, especially if it is dark and/or cold. I do not recommend moving marginatas into cold. They do not like cold at all, and it will lead to the lower leaves turning a mushy yellow, along with all sort of possibilities for root and stem rot. Marginatas do like to be kept dry, especially if they are in a dim location. Not as dry as a cactus, but pretty darn dry. When in doubt, err on the side of not watering. The ones you see the plant company take care of with the stiff leaves? It is quite possible that they remove them and replace them with new ones periodically, and that is why the leaves appear to stay stiff. Hope that helped!

It is called 'leaf roll' and is response of the plant to stress of some kind. In this case, the plant is young and growing but sure could use some mulch, especially in your zone, to keep the roots cool. In the long run it doesn't hurt the plant but it would be good to make sure there are no aphids or other pests, that you mulch the plant, that you try to keep the soil moisture level consistent, and that you don't over-feed or water it. If you will search 'leaf roll' here you will find many discussions that you might want to read through for more info. Dave

Mine always have that banged up look =S Luckily, they grow new leaves rather easily. I remove all mechanically damaged leaves. Here's what mine looks like now: These below have teeth marks from one of my critters. I caught the cute pup jauntily walking across the room with one of these rosettes in her mouth =O I'm letting them sit for a few days before re-potting.

The leaf roll could just be physiological, meaning just something that happens as a response to stresses like hot weather, underwatering, overwatering, etc. It sounds like your watering regimen is fine. Based on the information you provided, the most likely explanation is that the leaves turning yellow and purple because of a nutrient deficiency. Alaska Fish Fertilizer has nitrogen (N), but not much phosphorus (P) or potassium (K), and I have no idea whether it has many of the other nutrients, such as Mg and Ca, which tomatoes need. It's a fine fertilizer for leafy green veg, or for tomato plants when they're young before they start to bloom, but once they start to flower and fruit, they'll need more P and K than N. I would suggest you get a liquid fertilizer specifically for tomatoes or at least for fruiting vegetables, and try that and see whether your plant improves. There is a chance that your plant could have a virus, though. Keep a close eye on new growth. If it appears very curly and distorted and/or develops fat, purple veins or turns very purple on the underside of the leaves despite fertilizing with a tomato-appropriate fertilizer, and if the newer flowers start looking weird, it probably has a virus vectored by whatever pest caused the damage in the first pic (looks like leafhopper damage to me, and based on that and your location, I would think that Beet Curly Top Virus would be a top culprit). If it turns out that your plant does have a virus, it should be pulled and discarded. Here's a fact sheet on it with some photos which can give you an idea what to look for. Note that the distortion with a virus will be more dramatic, not just the rolled leaf edges you have now. Your local county extension should be able to help if you're unsure about a diagnosis. But don't panic yet. I think it's more likely to be a nutritional issue + heat-related stress.