Hi Diane,

A Philodendron Selloum usually gets brown tips with a yellow rim as shown in your picture when they are getting 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 there is too much salt or chemicals in the water you are using. A Selloum can also get brown leaves when over-watered. Since this problem started to occur when you moved the plant to a new pot, I think that’s where we have to start. The new pot has more soil than the old container and it will take the soil longer to dry out, so you probably don’t need to be watering as often as you did before. Did the new soil you used have 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.   in it. Some soils, like Miracle Gro, contain plant food so you don’t have to add additional food or the leaf tips will burn. Are you using water from the same source as before. Never use water that has passed through a water softener since it contains salt and the salt burns the leaves. The most important question, is your Philodendron selloum getting new leaves? If it’s not getting new leaves you may have damaged some of the roots when moving it to the new pot. There is a great product called superthriveSuperthrive combines vitamins and hormones to encourage plant growth both above and below the soil line. It's not a plant food so it needs to be used in addition to your regular plant food; the two can be used at the same time. Just put a few drops into your watering can & that's all that's needed to improve the health & appearance of your plants. If your plants are in real trouble, add about 10 drops per 2 gallons of water. SuperThrive works best when the soil is dry.     that you can read about in the Glossary of the website. It does wonders for newly re-potted plants.

Please let me know if things don’t get better and you need more help with your Philodendron selloum.