Can You Identify All of These Items You Find at Home Depot?

22. Bat guano is a good way to add phosphorus to your soil and plants. When you need to add nitrogen, you can use this. What is it?

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Correct Incorrect Fertilizers are sold with 'NPK' values listed on them. N stands for nitrogen, P stands for phosphorus and K stands for potassium. Nutrients like bat guano are high in phosphorus and are good for the late stages of the plant cycle. Castings are high in nitrogen and work great in a vegetative state.

22. Bat guano is a good way to add phosphorus to your soil and plants. When you need to add nitrogen, you can use this. What is it?

• Seagull guano
• Kelp
• Fish bone meal
• Worm castings