I have 2 office plants that aren’t doing well and could use some advice.
The Dracaena Janet Craig is in an office lobby with only artificial light. It does not have any diseases but the leaf edges are a dry brown and some of the bottom leaves are falling off (picture attached). Is it getting too much water?
The Zebra plant sits on a shelf in a bright office but it doesn’t get direct sun. It always seems dry & sad & the leaf edges are brown (no picture, sorry).
The browning on both plants could be caused by the same thing: too much fertilizerPlants need fertilizer only when they are actively growing. Slow growing plants in low light require very little plant food. Too much fertilizer is worse than not enough. Most plants prefer a water soluble plant food at 1/2 the recommended strength. Plants that are in bloom or dormant should not be fertilized. Houseplant food contains nitrogen (N), phosphorus (P), and potassium (K). A fertilizer containing these elements in equal proportion is considered a balanced plant food. Nitrogen helps in photosynthesis and encourages the growth of leaves and stems. Potassium and phosphorus also help in photosynthesis and aid in root and flower development. Most fertilizers have trace elements of other minerals that are lacking in the soil but are necessary for good plant growth. Fertilizers have a high salt content. If a plant is not producing new leaves and doesn’t absorb the fertilizer, salts build up in the soil. These salts can burn the roots, discolor the leaves, and cause new growth to be small. or too much chlorine and fluoride in the water. Always dilute your plant food to 1/2 the recommended amount. Only feed a plant when it is actively growing. Too much food is worse than too little. Water that contains fluoride and chlorine cause the leaves on dracaenas and zebra plants to turn brown. Let your water sit out over night or use distilled water.