I'm a new gardener but so far I've brought quite a few inherited dying plants back to life!
I have an outdoor deck. A schefflera I've had for about a year has some of its lower leaves - the umbrellas at the bottom of some branches - yellowing, though only in the veins and stems of the leaves; the rest of the leaves are still green. My first thought is I might be overwatering slightly, but I want to be sure.
I wait until the top inch of the soil is dry before watering, then water until it starts draining out the bottom. Last month I put a little Ironite into the soil, but not too much. Any thoughts?