I just stumbled onto this site by googling house plant
care. I'm not a gardener by any means.
Whenever my elders were 'doing it' and would try to get me interested, I'd always 'have something else to do' -like build model cars or go fishing.
Anyway, I also have a dieffenbachia that needs some TLC. My wife and I re-potted it 'cause it was outgrowing its 8x5" plant
store pot after putting up with my overwatering and/or neglect for the past 18+ months. I put it into about a 22x16" round pot with regular bagged store bought potting soil, after loosening the roots with a sharp knife as I'd seen done on TV quite a few years ago in order to break up the root-bound-ness?, planting it at the same height as it was, with rocks under the soil to allow for drainage. Then I layered some bagged dried sphagnum peat moss about a 1/2' deep over the top of the soil 'cause I thought it would do some good.
When I watered it in to settle the soil I added a very dilluted solution (1 tspn. of Miracle Grow liquid starter to a 1/2 gallon of water), of which about a cup was used to water in a broken stem from this plant
which I had previously rooted in water and starter about 6 months ago and had just planted in the leftover orginal pot. I waited over a week to re-water them with another dose of very diluted Miracle Grow solution as they were looking a little droopy but were dry to the touch even under the moss. I expected they may shock some. The big one perked up for a day or so but now it's starting to turn brown on the outer edges in spots and on the tips, and the small one looks like it may give up the ghost altogether as its pale and withering, and it has only three or four leaves to begin with, so there isn't much to work with. I'm guessing I over fertilized or watered them, or there's too much acid in the soil from the peat. What should I do? My hunch is to add some ash or soda to bring the acidity down, but how much if I do, and how without disturbing the already stressed root structure, or am I completely off base here? Thanks, Bionikmq