Purple stem. Please help

Hi there,

This is my fist real grow. I messed around when I was younger but never took is seriously. Now I grow for medicine for myself and some family.
Growing in 10 gallon root pouches with pro mix that was amended with some worm castings at the beginning. We are using the general organics nutes line.
We used crop king seeds genetics. Purple kush and white widow.

From the beginning I have had trouble with several purple kush. Dry leaves purpling stems and stunted growth. Tried everything with no luck. Maybe I missed something but I chalked it up to genetics and kinda wrote them off lol.

So the girls I have been successful with this far have really made me happy. So about a week ago we started to notice pre flowers. This week however the stems of our nice plants(we think) have started to turn purple at the stems but all around new growth and older fan leaves.
My question is? Should we be transitioning to flower nutes? The temps have not been cold at night. We haven't had any indication of deficiencies from what we can tell. I will include some pics.
Any advice is appreciated and if you feal I have left out some info please ask away.
Ty

I read a while back that purple stems accompanied by leaf problems USUALLY mean a lack of Magnesium.

http://www.growweedeasy.com/purple-stems-cannabis-seedling

Don't think it's mag def ....possibly P but check this chart and your sure it's not been colder at night ....are all your plants doing that

No we haven't had any cold nights the past week or so. The PK is showing all the purpling. Maybe a little on the white widow but not much. I will get more pics and upload later on. Thanks for the support thus far.

NSGorilla said:

Hi there,

So the girls I have been successful with this far have really made me happy. So about a week ago we started to notice pre flowers. This week however the stems of our nice plants(we think) have started to turn purple at the stems but all around new growth and older fan leaves.
My question is? Should we be transitioning to flower nutes?
Ty

Click to expand...

What I do in regard to switching to bloom nutes is as follows.

1st 2 weeks: continue with veg nutes
2nd 2 weeks: transition to 50% veg/50% bloom
The rest of the way, straight bloom nutes

Most plants will need more calmag as they start to flower. I add Epson salts to my water toward the end of veg and through flowering.

Larry {the} Gardener said:

What I do in regard to switching to bloom nutes is as follows.

1st 2 weeks: continue with veg nutes
2nd 2 weeks: transition to 50% veg/50% bloom
The rest of the way, straight bloom nutes

Most plants will need more calmag as they start to flower. I add Epson salts to my water toward the end of veg and through flowering.

Click to expand...

You use cal mag and epsom salt ....or do you drop the cal mag

Indacouch said:

You use cal mag and epsom salt ....or do you drop the cal mag

Click to expand...

Just the Epson salts. Easier to get my hands on.

Larry {the} Gardener said:

Just the Epson salts. Easier to get my hands on.

Click to expand...

Gotch ya I'm guna have to do something of the sort this year for sure .....helping a dear friend who has cancer she went with smart pots and stretches her ffof soil with cheap soil ....anyways there mag def ...I've been giving calmag recently seems to be helping but was told about epsom salt

Indacouch said:

Gotch ya I'm guna have to do something of the sort this year for sure .....helping a dear friend who has cancer she went with smart pots and stretches her ffof soil with cheap soil ....anyways there mag def ...I've been giving calmag recently seems to be helping but was told about epsom salt

Click to expand...

It's magnesium sulfate, and if you have a big garden, can be bought in 50 pound bags. I just pick up the cardboard cartons at Walmart. I put about 1/4 cup per five gallons of water. I mix it in the soil mix too.

Larry {the} Gardener said:

It's magnesium sulfate, and if you have a big garden, can be bought in 50 pound bags. I just pick up the cardboard cartons at Walmart. I put about 1/4 cup per five gallons of water. I mix it in the soil mix too.

Click to expand...

Wow that's way more per 5 gallons than I was told ......but if it works that's all that matters ...thanks for the response

Indacouch said:

Wow that's way more per 5 gallons than I was told ......but if it works that's all that matters ...thanks for the response

Click to expand...

That five gallons of water goes to 4 plants, so. . . .

I'm doing the Darwin Dope this summer. {survival of the dankest} Some of the patches are almost all rain dependent, so they get dry Epsom salts on the ground.

Indacouch said:

Wow that's way more per 5 gallons than I was told ......but if it works that's all that matters ...thanks for the response

Click to expand...

I'll do a heavy one like this once or twice. It doesn't hurt.