Help! My Sativa is going into flower with spots!

[sava0068]

First grow outside Minnesota. Weather here has been super hot and humid.

I have 6 plants going and this is only happening to one of them. Starting only on new leaves at the top.

They're dark green with yellowish spots forming. I don't think this is septoria since it's happening at the top.

6.5 PH, GH nutes with aggressive feed schedule. 5 other plants are responding well.

 

[22mucho]

looking like early cal/mag probs, i have one just like this im going to flush

 

[carlosescobar]

that looks to me like too many nutrients , the leaves will start curling at the top but less as you go down...ive just done it to a plant (i mistook it for sunburn as its been really hot here) but i noticed it stopped smelling and i got spots like calcium deficiency.. im just watering with low ph water and ive misted the leaves with water with a bit of cal mag in it , because the roots might be locking out but you can still foliar feed.

 

[mancorn]

I wouldn’t mist a flower - leads to rot & mildew (especially if it warm). Looks like there may be some powdered mildew already but can’t tell from the picture. Post some better images and more grow info.

 

[carlosescobar]

I wouldn’t mist a flower - leads to rot & mildew (especially if it warm). Looks like there may be some powdered mildew already but can’t tell from the picture. Post some better images and more grow info.

i tried to keep away from the buds , and its a plant that i am experimenting with , a spare. i always thought the first sign of too many nutrients was tip burn , but now i think about it i did give it too many nutrients over 3 waterings. i am in soil with guano and ...ive just realised what ive done, ...I top dressed with sulphur and guano , half way in flower and watered it in with water which had organic tomato feed NPK 4;3;8 , i did that twice.plus i added an inch of new soil which would have been nutrient rich and even then i took the leaf curling as sun burn..which i now realise doesnt happen as my other plants have not curled in this heat.
this is the other one ,wasnt quite as badly affected , but it now has zero smell , which i am taking as a bad sign. its got 50% milky trics so im going to give it a week and if nothing has changed , I'll chop it

 

[superchola]

I'm with the one guy looks like it needs some magnesium but I do not know if you give to your plants half way in flower I give mine some Epsom salt in water half way in flower

 

[superchola]

If it is a pure sativa sativa strains generally have a higher demand for magnesium compared to indica strains, especially during their long flowering cycles.

 

[sava0068]

If it is a pure sativa sativa strains generally have a higher demand for magnesium compared to indica strains, especially during their long flowering cycles.

It's a hybrid. The other sativa's are reacting just fine. But I'll try to give it more.

 

[GNick55]

is this plant in the ground?

 

[sava0068]

is this plant in the ground?

No they're in 15 gallon fabric pots.