Stush,
You have great imagination to think peroxide would revitalize 'dying rotted roots'.
I have been using it for years as an all purpose cleaner. When applied as a foliar wash/drench,
it cures the plants of any diseases and somehow makes them appear greener.
I learned this trick from other orchid growers.
A lettuce farmer I met uses peroxide in his underground irrigation after long periods of rain
to put more oxygen into the root zone. He says it keeps his plants from rotting when waterlogged.
Jojoe,
I had the same white spots on my jade plants earlier in the year. First time I have ever seen them and
I thought for sure I had a new bug. A tiny white scale was my first thought. So I sprayed them with oil.
My favorite insecticide. (Ultrafine Horticultural Oil Spray).
It kills all sucking insects (including spider mites) by smothering them.
Bugs can never build up an immunity to smothering and refined paraffin is fairly safe to spray.
Alas, no effect on the white spots. So not an insect.
So I sprayed fungicide and again no changes.
Eventually the white spots went away on their own.
Quite likely Mark is correct in it being the salt coming out of the pores.
Anybody else have an idea?
I am still uncertain and my white spots are back.
Rubbing alcohol is another effective insecticide.
Take a trigger spray top off an empty household cleaner and screw it on top of the alcohol bottle. Keep it handy and spray those bugs as soon as you see them.
We use it in our orchid houses and even full strength it does not harm the plants.
A general rule for spraying anything on your plants is: not to do it in direct sunlight and when it is hot.
The chemistry along with the magnifying shape of the water droplet can burn your plant.
So, spray in the early morning or later in the day.
I use the oil spray on every plant I own. Orchids, succulents, flowering bushes, citrus trees, etc.
The white spots appear on my Jades only. Not on any other Crassula or genre.
Funny how it is allover the round leaf Jades and only on the edges of my arrow leaf Jade.
