Tomorrow my lady will have completed her 6th week of the veg phase. Then by Saturday, I wanted to gradually transition to 12/12 in 2-hour increments, and on Sunday the 16th, I want to send her into flower. Now to my question. This morning I noticed spots on 2-3 leaves. Could this be a sign of Cal/Mag deficiency? She has been in this soil for 6 weeks now without fertilizing.
For me, itās also Magnesium, the simulated sunlight can cause that, and a healthy dose of CalMag should help
Otherwise, youāre good with the All Mix
Cal-mag is often high in nitrogen so be careful using it to correct problems during flowering. Thatās not an issue for you now but something to be aware of
I had Magnesium issues twice going into to flower both times it had white blotches on the leaves. I thought it was Powdery Mildew. The white blotches I tried to wipe off but they wouldnāt come off. I went through ChatGPT and it said that it was a Magnesium issue and Cal/Mag took care of it. I was using my own soil mix 70% Sunshine Mix #4, plus other organic inputs. I think I got a bad batch of coco. Your deficiency looks like it has rust spots.
So Iād like to add just one little thing.
And first off, a big hello to everyone.
I also see a calcium-magnesium deficiency. The All Mix soil seems to be very rich in nutrients, which is easily visible from the deep green leaves.
Thatās already getting into the territory of a bit too much nitrogen as well.
I think calcium, as well as magnesium, should be abundantly present in the soil.
If the climate is not optimalātemperature, humidity, VPDāthis CalMag problem often occurs.
An non-optimal pH value, or overwatering, and also too much nitrogen can cause problems for the plant in absorbing calcium and magnesium in sufficient amounts. Even though there is enough available.
But at some point, even the best All Mix runs out of juice.
Then nitrogen would run out as well, though, and the plant would fade/yellow from the bottom up ???
Iām keeping my fingers crossed that adding CalMag fixes everything.
Best regards from Pflanzenpaul
I also watered way too little in the beginning. Iāve only found the right rhythm with the correct amount of liters about 14 days ago. Thatās why the plant probably had problems with nutrient uptake at the beginning as well. Iāll add 0.5ml Cal/Mag the next time I water.
But donāt you think my leaves are still pretty green? Meaning still well nourished. So far, my soil is still unfertilized. If you agree, I would only start adding bloom fertilizer at the end of the 1st week.
Youāll see it right away when she isnāt getting enough. She turns lighter and yellow from the bottom up, and then itās time to feed.
You see, a deficiency isnāt always because something is missing in the soil.
She needs water to take up what she needs from the soil
But if the roots are too wet for a long time, it can also show deficiencies.
Itās always good to keep all factors in mind.
It takes time until you can see all of that.
Itās going well so far though.
And as you can see, I placed my fabric pot on a grate slightly higher than the saucer so that the excess water can drain directly and prevent root rot.
Starting tomorrow, Sun. 08/16, she is supposed to go into flower. Iāve been tucking the whole time. Youāre supposed to keep doing that at the beginning of bloom anyway. But at what point do I let the strains grow vertically?
And one more thing, shouldnāt I actually base the dosage of my bloom fertilizer on the EC value and not on half of the manufacturerās instructions? Right?
This is Bio Bizz purely organic fertilizer.
EC doesnāt matter here.
Just follow the chart.
And go by All Mix .
And here you can use the full amount.
Example; if you start with nutrients from flowering week 2, then you take the amounts for All Mix flowering week 2 and that increases as the flowering weeks progress.
Just as a reminder!
I have a well-pre-fertilized soil from the same manufacturer.
Just not the cannabis soil.
Instead, merely a normal plant soil.
There I give nutrients to the 2 autos 2 x a week. According to the All Mix chart, exactly the specified amount . But also all the products listed there.
The only thing is I lower the pH at the end and give pH 6.2/ 6.5/ 6.3.
And they are nice and green.
You can see them in āshow off your ladiesā. Freshly snapped today .
With mineral fertilizer, you start with half according to the instructions and can adjust if you can read the plant and its signs.
The plant looks well-fed .
You only start giving bloom fertilizer around the second week of flowering anyway.
It has less nitrogen.
But the plant still needs that during the flowering stretch.
looks great
