Soil/water pH is very important. When pH is off, some nutrients are unavailable to plants even when present in otherwise adequate quantities. You also have to

Soil/water pH is very important. When pH is off, some nutrients are unavailable to plants even when present in otherwise adequate quantities. You also have to account for insects and microbes, which can either totally destroy a plant or help, in the case of soil fungi, earthworms or pollinators. Too much light can be a problem, too. Not only from heat, but simply overexposure.