"David D." wrote in message ...
I have propagated and given away giant-leaf dieffenbachia (18" leaves) for
years. I keep my plants in the house year round.

In my house, they grow a single trunk until they reach the ceiling. I cut
them down and cut up the trunk, root the top and the trunk pieces, and the
original bottom still in the soil grows another single-trunk plant.

A friend who has one of my dumb cane progeny left it outside for the summer,
and just brought it in for the Fall. She called to say that it now has
beads of moisture around the edges of the leaves. That has never happened
in my own house. She also said that it has four new baby stalks shooting
up from the base, That is also something that I have never encountered.

What is going on. Too much moisture? Too much summer sun? Are the
drips safe, or are they severe irritants like the sap?

- David

your friend's dieffenbachia will probably rot and die. The same thing
happened to me. First year both of them were fine in the house and
growing vigorously, then the second summer I took to placing them
outside along with every other houseplant. For most plants it is very
good, but dumbcane picks up a virus or fungus that rots it starting
from the stem. It starts with those drops. Both died, one at the end
of the first summer and the other at the end of the second summer.

By then I had given out a few dumbcane babies to a friend, and those,
placed outside in the summer but only on a concrete patio (not under
trees like I do), had grown to be nice specimens with many shoots.
Eventually I took a couple of plants back, and they both died again.
One of them already had babies, and those two babies are still alive
and well. But I hope you are getting the drift.

The two plants I got the second time probably got it from the compost
I put in their pot after transplanting, because they started dying
well before I put them outside. It's a bug that is out there (at least
in Michigan) and dumbcane is sensitive to it. No other houseplant has
ever died on me except a couple I left out during a hard frost.