The Q&A Archives: Trumpet Plant

Question: I purchased a Trumpet Plant 2-3 years ago from Evergreen. It grows each year however it has never bloomed. What's wrong?

Answer: There are a number of different plants commonly called trumpet plants, so try to determine the sun exposure requirements for the one you have. Insufficient sunlight can translate into a lack of blooms. Also, you might try fertilizing with a product high in phosphorus, which promotes bloom. Make sure your plant isn't "sneaking" nitrogen from another source, such as nearby lawn fertilizer applications. Here?s some basic info on fertilizer and nutrients that plants require. The 3 numbers on a fertilizer bag refer to the percentage of N (nitrogen), P (phosphorus), and K (potassium) in the bag. There are different formulations for different purposes. In general terms, nitrogen produces lush green growth, phosphorus helps strengthen stems and produce flowers, and potassium keeps the root system healthy. If you're applying fertilizer to fruiting (e.g., tomatoes) or flowering plants, you're not as interested in the plant developing leaves as you are in it flowers and fruit, so you'd use a formulation lower in nitrogen and higher in phosphorus, such as Miracle-Gro's Plant Food at 15-30-15. Bone meal is an organic source of phosphorus.

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