I have some two week old seedlings that are turning yellow and brown on the tip of a couple leaves. What is causing this and how do I try to salvage the seedlings?
What leaves might these be? If they are the coytledons (the first two leaves out of the seed) that is normal. They will eventually die off, because more leaves are coming in all the time. If it is on other leaves, then it may be early signs of overfeeding of nitrogen. A simple flush will work if these persist or get worse, but know that the bottom leaves normally die off. ~Lycanthropy