Canna terra - iron and nitrogen deficiency?

[9fingers]

Trying canna terra for the first time, mixed a little extra perlite into the mixture and planted seeds straight into 10 litre pots. The plants are 5 weeks old and 3.5 weeks old and I'm super happy with how much they've already grown.

 

But the plants have been a bit of a lighter green than usual so I gave them a feed of green powerfeed about a week ago. Now the 3.5 week old plant has started shooting out real yellow looking leaves. Could this be fixed with an iron supplement?

 

 

5 week old plant

 

 

3 week old plant

 

 

 

3 week old plant with possible iron deficiency?

[9fingers]

By the way the plants are indica dominant and are just starting to preflower, if that makes any difference

[micmac]

Maybe too much power feed , may have changed ph of soil ?

 

Sent from my SM-T510 using Tapatalk

[kloud9]

And transplant into a bigger pot

[The Stoned Jester]

Check this handy chart to make sure you diagnose properly as some conditions look similar.


I've used canna terra in the past but I only ever used the Canna Bio range of food + some pk13/14, only thing to make sure is good drainage, the terra likes to hold on to certain chems and you can get a salt build-up.

[brick]

Trying canna terra for the first time, mixed a little extra perlite into the mixture and planted seeds straight into 10 litre pots. The plants are 5 weeks old and 3.5 weeks old and I'm super happy with how much they've already grown.

 

But the plants have been a bit of a lighter green than usual so I gave them a feed of green powerfeed about a week ago. Now the 3.5 week old plant has started shooting out real yellow looking leaves. Could this be fixed with an iron supplement?

 

 

5 week old plant

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3 week old plant

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3 week old plant with possible iron deficiency?

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I use Canna Terra all the time. Getting a bit expensive now though. I found when I used nutes other than Canna nutes the plants did not like it one bit. Not saying other nutes wont work but from my personal experience I stick with Canna Terra nutes when I use Canna Terra medium. Give it a good flush with water only, with a ph between 6.5-6.8 then water with half the required dosage of whatever nutes you are using. This url may help as well. https://www.growweedeasy.com/cannabis-plant-problems/iron-deficiency

Edited January 29, 2021 by brick