Do we still need to choose between natural and chemical? Yes, because their effects on the soil, plants, and environment are very different.
Chemical fertilizers are designed for quick action, but at what cost? Depletion of soils, pollution of groundwater, dependence on inputs... They feed the plants, but not the earth.
Conversely, a natural fertilizer, such as fertilaine, respects biological balances. It acts slowly but surely, by promoting microbial life and improving soil structure. As a bonus: it reduces watering by retaining water better.
Natural is less spectacular... but much more sustainable. And your harvests will only be healthier, more robust, and more flavorful.