If you're having trouble with your plants, there are a few things you can check to make sure everything is going right. First, make sure the air around your plants has the right amount of moisture - too little or too much can cause problems. Second, keep in mind that different plants have different needs when it comes to nutrients, depending on their genetics. You may need to adjust the type or amount of fertilizer you're using to get the best results.
Also, it's a good idea to test the runoff water from your plants to see how much nutrients they're actually absorbing. If you're seeing lower-than-expected levels, you might need to adjust your feeding schedule or the amount of fertilizer you're using.
Another thing to check is the pH of your soil. Depending on the plant, the soil may need to be more acidic or more alkaline. Finally, make sure you're giving your plants the right amount and type of light. Plants need different types of light at different stages of growth, so make sure you're giving them what they need.
If you've tried all of these things and your plants still aren't thriving, it could just be due to their genetics. Some plants are simply harder to grow than others. Don't get discouraged - just keep experimenting and trying new things until you find what works best for your particular plants.