Quote Originally Posted by copobo
ideal growing conditions for pm are temps below 70 and rh above 60. Big temp drops from day to night will cause dew and promote PM growth.

BUT, once you have it, those thresholds are out the window. Taking RH down to <40 and having temps >80F help allot. You'll want to be pushing some CO2 if you are going up to that level with the temps (tops at 85F w/1500ppm)

Weezard - is it a strain (different seeds, distinctly different grows),

Different strains..

or cuts from the same plant? If cuts off the same plant, you may be spreading a latent infection from the mother plant - use some eagle 20 and break the chain if you need to save genetics. Certain strains are more prone to PM than others - strains with tons of foliage like blueberry are more susceptible.

Oddly enough the G13-Blueberry has no PM problems.
The lemon-skunks were ravaged, and I only managed to save some tops from HI Homie-III by harvesting early.

If this is the case, and you are having big temp drops or nighttime temps of below 70, it's important that you prune a bunch and/or shake the plants daily to release water trapped between leaves.

Runs between 82F. by day and 68F. by night this time of year and we seldom hit our dew point.
And they really are not that dense. Fairly open, and I have them roofed so the don't even see rain.

Try it. Go out and grab your tree by the stalk and shake. Does water fall when the plant otherwise appears dry? If so, you need to prune.

Nope, but it does annoy the whitefly.
It's their "nectar" that supplies a landing spot for drifting spores.


PM is a mutha.
Indeed! It's rampant on da islands.
I've read reams from all sources and they all agree that once infected, the outlook is grim.
('druther risk smokin' some PM than some of the stuff used to kill it.)
It looks like my only option is to breed my own PM resistant strain here.
I've got ahold of some Gainsville Green seeds that survived in Florida and want to cross them with the blueberry that grows so well here.
Any suggestions on breeding stock?

Aloha, and Mahalo
Weezard