Dark Purple showing at ends of branches

1

1060park

New Member
Growing outdoors in Michigan
Durban Poison and White Widow
Plants growing very well, some are over 9 feet tall

The attached photos show my concern - dark purple color on the leaves starts at the end of branches. When rubbed, the coloring does not smug so I doubt it is a fungus or mold (but I am not sure as I have no idea what is going one). The condition seems to travel down the branch and it appears at the end of shoots further down.
Not a condition that appears all over a plant, not now anyway.

Any help is much appreciated.20190818_112335[1].jpg 20190818_112351[1].jpg 20190818_112649[1].jpg
 
CanadianJim

CanadianJim

Well-Known Member
Bunch of guys with pants like that had a boron deficiency. I thought it was a fungus, like Schwagg#12, but no anti-fungals worked, not even Hydrogen peroxide.
 
1

1060park

New Member
Thank you for all your responses.
Here is more information:
Growing outdoors on a plot that has been well tended for over a decade with compost, feather meal, blood meal, mulch. Grew either peas or corn on it. Organic methods.
Watered overhead for a while but not for the last month. Now us drip irrigation.
Fed the earth with green sand (the plot was just a tad less that optimum on a soil test from Mich State U), compost that tested really good for microbiol content and blood meal. Soil tested beyond optimum for phosphorus and magnesium. PH was 7.2%
Water is from the sky or my well. Don't know much about my well water.
Thank you for added thoughts.
The seeds did not come from Female Seeds, the company.
 
1

1060park

New Member
One more thing - the condition shows up on just a few branches on a plant, not all over the plant at the same time.
 
Z

Zappa66

Well-Known Member
I had this last year. No idea what it was. The affected branches never develop buds. Prune off purple areas, some of my plants were ok after cutting it out.
 
rob333

rob333

Well-Known Member
1060park said:
Growing outdoors in Michigan
Durban Poison and White Widow
Plants growing very well, some are over 9 feet tall

The attached photos show my concern - dark purple color on the leaves starts at the end of branches. When rubbed, the coloring does not smug so I doubt it is a fungus or mold (but I am not sure as I have no idea what is going one). The condition seems to travel down the branch and it appears at the end of shoots further down.
Not a condition that appears all over a plant, not now anyway.

Any help is much appreciated.View attachment 4381251 View attachment 4381252 View attachment 4381254
Click to expand...
that's one serious iron issues right there peace
 
W

whatscooking

Well-Known Member
Garden hose, soak, you want to dilute the concentration around the roots. Mix up 20 ml per gal peroxide, 3 % in 5 gal bucket and give plant couple gal of this mixture to give roots a shot of oxygen, i do it after garden hose soak. Repeate couple days
 
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W

whatscooking

Well-Known Member
You said, soil tested beyond optimum for phosphorus and magnesium with ph 7.2, there it is.
Mix two cups hydrated lime in 5 gal water give plant couple gal to help with high ph.
 
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GreenTools

GreenTools

Well-Known Member
I have that same thing just starting on an outdoor plant that does not purple at all ( been growing this blueberry hashplant for about 2 years) . Only one branch has this purpling on the buds. rest is fine.
 
danjac82

danjac82

Well-Known Member
whatscooking said:
You said, soil tested beyond optimum for phosphorus and magnesium with ph 7.2, there it is.
Mix two cups hydrated lime in 5 gal water give plant couple gal to help with high ph.
Click to expand...
The lime would be better suited if it was a low ph issue. The lime is a neutral 7 and won’t shift his ph much at all
 
danjac82

danjac82

Well-Known Member
Dont listen to the guy telling you to flush or that the plants overfed. That’s looking to be a phosphorus issue to me. When did it start? Has the soil been soggy lately or colder nights? Obviously the ph is an issue and is going to give you uptake issues but if this just started than id say a combination of ph and something else has pushed a phosphorus deficiency into full throttle. I’ve only saw it that bad on young plants that stayed wet for an extended period. Your leaves aren’t droopy though and they look to still want to pray so not moisture. That ph is going to end up being what you need to fix. You say optimal levels of phosphorus and magnesium are present so...hopefully you’re just making that up and can feed to correct this. Lol. Plants starving worse than an Ethiopian
 
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