Drying up leaves at the bottom of the plant

My plant is now about 9 weeks old and about 50 inches high.
The top of the plant is healthy but about ten leaves at the bottom look like this.
Any thoughts on what can cause this?

VolimPicke said:

My plant is now about 9 weeks old and about 50 inches high.
The top of the plant is healthy but about ten leaves at the bottom look like this.
Any thoughts on what can cause this?

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The fan leafs are going to turn yellow first. My guess is these are just dying instead of yellowing.

That looks kind of a small pot for a 50" plant. What I would do is clean off the damaged leafs. They appear to be all fan leafs at the bottom. Without seeing the rest of the plant It looks like they should come off anyhow. It could be that it's time to do a little defoliation. Please don't act on what I say, I'm not confident on this, but it's just what I see.

Yea no it's dark stem is related to your lockout issue.Soil is unbalanced somehow.Got to plant in mother earth and full sun .

The plant was in a 20 liter (5 gallon) pail
Now it is in a 50 litre planter
Top of the plant looks good

VolimPicke said:

The plant was in a 20 liter (5 gallon) pail
Now it is in a 50 litre planter
Top of the plant looks good

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She looks happy.

Proof bugs only eat nutrient deficient tissue. Basic potassium deficiency, with bugs munching the effected tissue before it goes necrotic