I love to grow plants. The simple trick to remember is to save your coffee grounds. When you go to plant your plants, mix in the coffee grounds with the soil. The plants love the caffeine! If you don't drink coffee, go to Starbucks - they give away their grounds. Also, once a week, save your coffee or tea with nothing in it and use it to water your plants. And a note about fennel - use fennel seeds with fish or in salads, it's great!